ZETOR

Operation manual presented here will make you acquainted with operation and maintenance of a new tractor. De-
spite the fact that many of you are experienced from operating other tractors, we ask you to become familiar with
this manual as thoroughly as possible.
You will find in it lot of new information and you will get a perfect overview how you can use the tractor best in vari-
ous works.

When observing the listed operation principles, tractor maintenance and driving safety, your new tractor will become
a reliable companion for many years.
Tractor manufacturer would like to wish you thousands of hours of satisfactory operation.
ZETOR
Brno

3
Technical data, construction data, equipment, material and design are valid at the time of print. Changes reserved.
4
 CONTENTS
Page
“Major” tractors ............................................................................................................ 6
Production numbers placement - tractor with a cab .................................................... 7
User’s safety instructions ............................................................................................ 9
Preventive daily maintenance ................................................................................... 13
Getting acquaintance with a tractor ........................................................................... 19
Driving operation ....................................................................................................... 39
Tractor drive-in .......................................................................................................... 53
Transport usage ........................................................................................................ 57
Drive of agriculture machines .................................................................................... 61
Hydraulic equipment ................................................................................................. 67
Linkages .................................................................................................................... 81
Wheel track change .................................................................................................. 87
Auxiliary ballast weights ............................................................................................ 93
Electrical installation .................................................................................................. 99
Maintenance of the tractor ...................................................................................... 107
Maintenance instructions ........................................................................................ 119
Adjustment .............................................................................................................. 135
Main technical parameters ...................................................................................... 139
Glossary .................................................................................................................. 151

Operation manual includes the descrip-

tion, operation and maintenance of a
standard design and accessories with
which a tractor may be equipped on re-
quest. Accessories not standardly
mounted by a manufacturer (from facto-
ry) may not be subject to complaint. Ser-
vice cheque book is not part of operation
manual but makes a separate manual,
which is handed over to you upon a new
tractor purchase.
5
 “MAJOR” TRACTORS
“MAJOR” TRACTORS
Engine output
Type (kW)
of tractor
EC 24 2000/25/EC
Major 80 53 56,3

NM13N080

6
PRODUCTION NUMBERS PLACEMENT - TRACTOR WITH A CAB

NM13N081gb

7
 PRODUCTION NUMBERS PLACEMENT
When ordering spare parts and with all both written and oral contact, use the data about your tractor – write it down to the boxes
below.

Type of tractor Production number of tractor Production number of engine

Major 80

The labeling “to the right”, “to the left”, “in

the front”, “at the back” applies in the
sense of tractor’s drive.
Manufacturer reserves the right to make
NM13N082
changes in construction and equipment
serving to technical progress.
8
 USER´S SAFETY INSTRUCTIONS
Pay increased attention to the part of GENERAL SAFETY REGULATIONS 8.The key in the switchbox must be in “I”
operation and maintenance manual 1.Only a trained professional who position.
which are labeled with this symbol has a valid authorization for driving 9.When heating the engine by electrical
a tractor and is thoroughly acquain- heater, plug the plug to electrical current
You will find this symbol with all ted with operation and safety prin- inlet and then connect to network. After
the important notifications relat- ciples may work with the tractor. finishing the heating, unplug the device
ing to operation safety. 2.Apart from notifications related to safe- from the electrical network first.
Observe these notifications ty, listed in Operation manual, you are
and exercise extreme care in obliged to respect generally binding safe- DRIVING OPERATION
these cases! ty and traffic regulation of the country 10.Hydrostatic steering, hydraulic, cool-
Inform your co-workers and oth- where the tractor is used. ing and fuel system hoses must be
er users of these notifications. checked and if you learn of damage, re-
Study chapters marked with this SUITABLE CLOTHING place them. The following may be signs
symbol thoroughly before you 3.Do not wear loose, untight clothing and of hose damage: disruptions on the sur-
start operating, repairing them loose flying long hair. face of the hose, releasing pre-load of
and adjusting the tractor. 4.Use suitable (prescribed) personal pro- hose connection, (this can be verified by
tective means (shoes, gloves etc) when an easy removal of the hose from branch
You will find this symbol with all performing all the works. pipe) and mechanical hose damage.
important notifications related to Hose with expiry dates must be replaced
operation adjustment and re- after the expiry date is due.
pairs of the starter. STARTING THE ENGINE
11.When going on the roads with trailers
Observe these notifications 5.Starting the engine by going down the and tools, brake pedals must be con-
and exercise extreme care in slope is not allowed. nected with flap.
these cases! 6.To start the tractor to start the engine 12.Brake and steering must be in a per-
by means of another tractor or a different fect state at all times.
This symbol marks parts of Op- vehicle is allowed only by using a draw-
eration manual related to envi- 13.Going down the hill without a shifted
bar. gear is forbidden!
ronment protection. 7.Start only from driver’s work place with 14.Pay special attention to the steering

This symbol marks tractor ac- gear shifting lever in neutral position and of the tractor on a slope, muddy, sandy,
cessories mounted in production with a depressed clutch pedal. Danger of icy or uneven terrain.
plant on customer’s request. death when starting by short circuiting
starter clamps.

9
 USER´S SAFETY INSTRUCTIONS
15.Observe the maximum set angle of RECOVERY, PUSHING 32.Use climbing spurs for getting off and
slope availability. 24. To recover a sunken tractor, always hold onto handle bars. Take increased
12° with tractors with front drive axle 1. use a drawbar or a rope. care in the area of gear shifting lever and
16.Respect the total permitted weight of Never use chains! If chain pulls the lever of manual fuel supply control.
the set stated on the production plate of the apart there is a danger of death! 33.If you are leaving a tractor with engine
tractor, or on the fender of rear wheel. 25. When recovering it is dangerous to running, brake it with a manual brake
17.When going through a bend, do not stay close to a drawbar.
use differential throttle. 26. A front hook is mounted on tractor’s ONLY WITH ENGINE AT STANDSTILL
18.Getting on and off the tractor in mo- frame which serves for towing the tractor 34.All the works associated with filling in
tion is forbidden. itself i.e. without a trailer or a different fuel, cleaning, greasing and adjusting
19.When travelling with machines linked auxiliary device. tractor or linked machines may be done
in rear linkages, the load of driven axle 27.When forcing other vehicles (haulers, only with engine or moving parts of trac-
must not drop below 18 to 20 % of im- trailers, etc.) by a tractor never use freely tor at standstill apart from brake, hydrau-
mediate set weight. inserted balk or rods between the tractor lic and charging function.
and the pushed object. Prior to demounting the cab, it is always
PEOPLE TRANSPORTATION, necessary to stop the engine running. In
OPERATION closed buildings or rooms, engine of the
20.Only the number of people listed in LEAVING THE TRACTOR
28.Do not park the tractor with mounted tractor may run only in case when suffi-
technical certificate may be transported cient ventilation is provided. Exhaust
on the tractor. tools in a lifted position.
29.Before leaving the tractor, do not for- fumes are harmful to human health.
21.Persons not charged with work with
auxiliary tractor’s equipment are not al- get to brake with a manual brake (en-
lowed to stay between a tractor and aux- gage a gear), remove the key from a ANTI-FIRE SAFETY PRINCIPLES
iliary machines (tools). switchbox and lock the cab. 35. Tank the fuel best after finishing work
22.Before you drive off with a tractor, 30.In a tractor equipped with reversing, and with engine at standstill.
make sure that presence of an author- shift reversing lever to the position for 36. Do not fill the tank to the brim in
ized personnel or an obstacle does not travelling to the front. summer. Wipe spilled fuel off immediate-
prevent you from driving. 31.Use the left side of the tractor for get- ly.
23.Maximum permitted speed of the set ting off as a standard. Look around to 37.Do not tank fuel near fire and do not
(tractor + trailer or semi-trailer) with air make sure that there is no vehicle that smoke.
brakes is 30 km/h. might jeopardize your safety is coming.

10
 USER´S SAFETY INSTRUCTIONS
38.When checking electrolyte level in an PREVENTIVE DAILY MAINTENANCE
accumulator battery, do not smoke and HEALTH PROTECTION WHEN
WORKING WITH OIL PRODUCTS 46. To be done daily or at the latest after
do not use open fire. every 8 - 10 hours of operation.
39.In environment with increased risk of 44. After terminating the work or before
fire (hay barns, piles etc.) observe fire eating it is necessary to wash thoroughly SAFETY CAB
safety guidelines conscientiously. with a non-irritating washing agent and 47. If there is damage of protective frame
40.If the tractor is equipped with a fire- treat your hands to a suitable regenerat- of the safety cab by corrosion, accident
extinguishing device, keep it ready at all ing cream. or in a different way, safety cab must be
times. 45. When connecting and disconnecting replaced.
quick couplers of hydraulic circuits, re-
move the remaining oil in the socket or AIR CONDITION
HEALTH AND ENVIRONMENT quick couplers plug with any textile mate-
PROTECTION 48. It is by no means possible to de-
rial. mount, turn or otherwise manipulate with
41. Tractors are not equipped with spe- air conditioning system bolting. There ca
cial air filters for air sucked into the cab. be sudden leakage of coolant and thus
They are therefore not designed for WASTE DISPOSAL
there can be local fast cooling. When
working with aerosols and other sub- When disposing of the tractor or its parts you touch it or when parts get frozen in
stances harmful to health. (including operation liquids) after they your hands there can be severe damage
42. Petroleum, motor oil, mineral oils, are dues, everyone is obliged to observe to some tissues.
and other oil products which are used applicable provisions of valid laws and 49. Air condition system is equipped with
for operation and treatment of the tractor implementation regulations to the laws of quick couplers which enable to separate
may cause various skin conditions when the country at stake where the tractor is the cab from the body of the tractor when
getting into direct contact with your skin, operated. The last seller of the tractor is necessary without any leakage of cool-
they are irritating to mucosa, eyes, di- obliged with reference to the Waste Act ant. Entrust a service with interventions
gestive tract and upper respiratory tract. to inform a consumer about the ways to to air condition system.
Some of them may cause also overall ensure back withdrawal of some used
poisoning. parts of the tractor. These are especially
43. Staff getting in touch with oil products oils and other operation liquids, accumu-
are obliged to observe safety and hy- lators and tires.
gienic guidelines conscientiously, to use
appropriate protective means and to
work in well-aired spaces.

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 USER´S SAFETY INSTRUCTIONS
ELECTRICAL INSTALLATION oughly clean the tractor after finishing
50. No additional interventions the works or to neutralize chemically ag-
may be done to the electrical in- gressive substances and clean.
stallation of the tractor like con-
necting other electrical devices
from the reason of it possible
overload!
51. Electrical installation values are:
Nominal voltage 12 V =
Ground minus ( - ) pole
By using starting carriages or auxiliary
sources with a different voltage or polari-
ty, you can cause serious failures of trac-
tor.
52. When manipulating with accumulator
battery it is necessary to take greater
care and avoid short circuits. In tractors
equipped with battery disconnector, turn
this means of manipulation with battery
off.
53. Tractors may not be operated with a
disconnected accumulator battery; there
can be serious damage to the tractor.

WORKING IN CHEMICALLY
AGGRESSIVE ENVIRONMENT
54. If the tractor works in chemically ag-
gressive environment (e.g. when working
with chemical sprays, artificial fertilizers,
environment with higher concentration of
soils etc.), it is necessary to always thor-

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 PREVENTIVE DAILY MAINTENANCE
Do daily or at the latest after every 8 - 10 hours of operation (for more information see chapter Tractor maintenance).

NM13N083

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 PREVENTIVE DAILY MAINTENANCE

NM13N084 E6g G751b

FUEL SYSTEM TIGHTNESS OIL LEVEL IN ENGINE COOLING SYSTEM
Check tightness of fuel system including Oil gauge is placed on the right side of Check the tightness of joints of the cool-
fuel tank drain plug. Remove untightness the engine. After unscrewing and extract- ing system and the amount of coolant in
forthwith. ing the gauge, check the amount of oil in equalizing tank. Equalizing tank is ac-
engine and the tightness of joints of cessible after opening the front bonnet of
greasing system of the engine. Keep the the tractor. Refill the missing amount to
oil level between the levels of gauge. upper level marked with MAX. Minimum
admissible height of coolant level is
marked with MIN mark line.
Release air pressure stop after
the coolant cools off! Danger of
scalding!

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 PREVENTIVE DAILY MAINTENANCE

NM13N085 G751b
TRAILER AIR BRAKES HYDROSTATIC STEERING
Check the tightness of the air system of Check the level of oil in the tank of hy-
brakes and the efficiency of tractor drostatic steering with a control gauge.
brakes with trailer Hydrostatic steering tank is accessible
after opening the front bonnet of the trac-
tor. If necessary, refill the oil to the level
of control gauge which sets its proper
amount.
Check the condition of all the hoses of
hydraulic steering circuit, if they are not
damaged and if oil is not permeating.
Check the tightness of screws and nuts
of drag rod and levers.

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 PREVENTIVE DAILY MAINTENANCE

NM13N086 G710b
TIRES AND WHEELS AIR CLEANER
Check the air pressure in front and rear Cleaner maintenance must be done after
tires. Depending on the nature of work signalization of indicator contamination.
adjust to the recommended pressure. Indicator is accessible after opening front
Check or tighten the screws of front and tractor bonnet. It is placed close to the
rear wheels (connection rim / disc and bend of sucking pipeline.
disc / wheel shaft). Contamination is mechanically signalized
Never drive with untightened by a red field which is shown after filter
screws! insertion clogging directly on contamina-
tion indicator.

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 PREVENTIVE DAILY MAINTENANCE

NM13N063 C113 NM13N087

TRAILER HITCH AFTER WORKING WITH FRONTAL SHORT FUNCTION TEST
Check the condition of trailer hitches and MOUNTED MACHINES After starting the engine check that the
connecting devices including trailers. After working with frontal mounted ma- control for signaling failure of hydrostatic
chines: steering, engine greasing and charging
 Check the tightness of joist of external went off.
hydraulic circuit of front three-point link- Check the function and tightness of hy-
age draulic circuits of steering.
Radiator clogging:
1. hinge the bonnet away
2. release and protrude air condition
condensator to the left side of the
tractor
3. clean front walls of engine radiator
(air condition condensator) by pres-
surized air (pump air in the direction
of the engine)
4. remove remaining dirt from the area
under the bonnet (to prevent its re-
peated sucking in)

17
NOTES

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 GETTING ACQUAINTED WITH THE TRACTOR
Page
Safety cab ................................................................................................................. 21
Opening doors from the outside ................................................................................ 21
Opening doors from the inside .................................................................................. 21
Rear window ............................................................................................................. 22
Bottom rear window .................................................................................................. 22
Side window .............................................................................................................. 23
Hinged lid .................................................................................................................. 23
Driver´s seat.............................................................................................................. 24
Tilting steering wheel ................................................................................................ 24
Panel of switches on cab´s roof ................................................................................ 24
Switches and controls on the dashboard .................................................................. 25
Direction indicator switch .......................................................................................... 25
Headlights switch ...................................................................................................... 25
front windshield wiper and washer ............................................................................ 26
Switch box key in the position (0).............................................................................. 27
Switch box key in the position (i) ............................................................................... 27
Switch box key in the position (ii) .............................................................................. 27
cab heating................................................................................................................ 28
Cab heating registers ................................................................................................ 28
cab air condition ........................................................................................................ 28
Dashboard................................................................................................................. 31
Manual fuel control lever ........................................................................................... 32
Engine run stop control ............................................................................................. 32
Hydraulic control ....................................................................................................... 32
auxiliary hydraulic switchboard control......................................................................... 33
Pedals ....................................................................................................................... 33
Tractor user is obliged to get ac- Differential lock.......................................................................................................... 33
quainted in advance with recom- Reversing lever ......................................................................................................... 34
mended procedures and instruc- Gear shifting lever ..................................................................................................... 34
tions for safe tractor’s operation. Road and reduced speeds shifting lever ................................................................... 34
During operation it is already too Manual brake and PTO shaft disengagement lever .................................................. 35
late!

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 GETTING ACQUAINTED WITH THE TRACTOR
Page
Front drive axle control lever..................................................................................... 35
PTO shaft drive engagement lever ........................................................................... 36
PTO shaft revolutions 540 and 1000 rpm shifting lever ............................................ 36
Battery disconnector ................................................................................................. 36
Fuel tank ................................................................................................................... 37
FUEL TANK drain plug ............................................................................................. 37

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N088 NM13N025 NM13N026

SAFETY CAB OPENING DOORS FROM THE OUT- OPENING DOORS FROM THE INSIDE
Use the left side of the tractor for SIDE By pressing the button (1), doors of the
getting in and off the cab. Left cabin door is lockable from the out- cab can be opened from the inside.
Use climbing spurs for getting on side. Lever (2) on right door serves for locking
and off the cab and hold onto a Right door of the cabin are equipped the lock of right door.
handle. only with a button from the outside. The door lock is locked by shifting the
Take greater care in the area of After unlocking and pressing the button lever (2) in the direction of an arrow.
gears lever and manual fuel con- of the lock the door opens by pulling the Unlocking is done by shifting the lever
trol lever. handle. (2) against the direction of an arrow.
With total opening, the door is held by a
gas prop.

We do not recommend driving

with open doors from the reason
of their possible damage.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N027 NM13N028
REAR WINDOW When travelling on an uneven BOTTOM REAR WINDOW
Is equipped with a handle and in open surface we recommend to lock For opening the bottom rear window, it is
position it is locked by gas props. the window in a locked position – necessary to push the lever (1) in the di-
By pushing the lever (1) downwards a there is a danger of window rection of an arrow.
flap of rear window is released and by cracking. Close the window in reverse procedure,
pressure on handle of rear window we When starting work with ma- window flap will close automatically.
open the window. chines mounted in rear three-
When closing the rear window after pull- point linkage of the tractor make
ing the window by handle, the flap of the sure that there is no risk of colli-
window snaps automatically. sion between mounted tools with
maximum heave of rear three-
point linkage and open rear win-
dow. If there is collision we rec-
ommend working with a closed
window.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N029 NM13N030
SIDE WINDOW HINGED LID
For opening the side window it is neces- It is opened by turning the locking lever
sary to shift the lever (1) to the back and of the lid (1) in the direction of an arrow
then in the direction of window in direc- and by pushing the locking lever in the
tion of an arrow. Close the side window upward direction.
in opposite way. Close the hinged lid in a reverse proce-
dure.
By opening the hinged lid, the
overall height of tractor in-
creases. Therefore close the lid
always when you pass through or
park at places with limited light. .

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 GETTING ACQUAINTED WITH THE TRACTOR

C126 NM13N031 NM13N032

DRIVER´S SEAT TILTING STEERING WHEEL PANEL OF SWITCHES ON CAB´S
1 - Control of setting the seat backrest Release the lever (1) by turning in the di- ROOF
angle (by turning the control the an- rection of an arrow, set the tilting of the 1 - Air condition switch
gle of backrest is set). steering wheel and lever (1) to be tight- 2 - Beacon switch
2 - Longitudinal setting of seat lever (the ened by turning against the direction of 3 - Rear windscreen wiper switch
lever to be pushed from the seat, the an arrow. 4 - Rear working lights in cab’s roof
seat to be set longitudinally and lever After pressing the button (2) the lever (1) switch
released). can be relocated to a suitable position. 5 - Front working lights in cab’s roof
3 - Seat suspension setting control switch
based on driver’s weight (setting by
turning the control, the direction
based on the pictogram on gaiter of
the seat)
4 - Vertical seat adjustment control (set-
ting by turning the control, direction
based on pictogram on seat’s graiter)

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N033 NM13N034 NM13N035

SWITCHES AND CONTROLS ON THE DIRECTION INDICATOR SWITCH HEADLIGHTS SWITCH
DASHBOARD Direction lights are turned off by the The main lights are switched by a switch
1 - Direction indicator switch movement of a switch (1) to position (a) (2) after switching on the main lights in
2 - Headlights switch or (b) the grill of the bonnets by a switch (4).
3 - Warning lights switch
4 - Headlights switch a - direction lights to the right a - side lights
5 - Hearing switch b - direction lights to the left b - dipped lights
6 - Switch box c - headlights
7 - Heating valve control
8 - Front screen wiper and washer After pulling the switch lever (2) to the
switch steering wheel, acoustic horn is en-
9 - Engine stopping control gaged.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N036
FRONT WINDSHIELD WIPER AND
WASHER
Front windscreen wiper and washer are
switched on by a switch (8).

a - disengaged
b - front wiper on

Front windshield washer is engaged by

pulling the lever (8) in the direction of the
steering wheel.

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 GETTING ACQUAINTED WITH THE TRACTOR

S43 S44 S45

SWITCH BOX KEY IN THE POSITION SWITCH BOX KEY IN THE POSITION SWITCH BOX KEY IN THE POSITION
(0) (I) (II)
The voltage of all the equipment con- The voltage is connected to all the Starter and supply of all equipment is
trolled via the key is disconnected. The equipment excluding starter. The key is connected in this position apart from
key can be removed. in this position with the engine running. wipers, washer, cab ventilator and air
condition. After starting, the key auto-
matically returns back to “I” position.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N037 NM13N038 NM13N039

CAB HEATING CAB HEATING REGISTERS CAB AIR CONDITION
Heating is placed in dashboard panel. Heating registers are placed in the upper Cab air condition is controlled by a three-
The heating is turned on by a switch (5). (A) and face part of the dashboard panel. position switch (1), placed on the panel
The switch (5) is to position The upper register (A) is opened by turn- of witches on the cab (A) roof. Air condi-
a - after switching the switch to the first ing a wheel (1) in the direction of an ar- tion output is increased by switching the
position the heating ventilator output row. It closes when turning against the switch (1) in the direction of an arrow.
is lower direction of an arrow.
b - after switching the switch to the sec- The lower registers (B) are opened by Air condition registers (2) are placed in
ond position the heating ventilator shifting the levers (2) in the direction of the cab’s roof.
output is higher arrows. By shifting the levers against the
direction of arrows, registers close. If the air condition is active, set
The temperature of exhausted air is set registers (2) under the requested
with a heating valve control (7). angle so that there would not be
When turning the control (7) in the direc- direct fanning of people in the
tion of an arrow, the temperature of ex- cab (illness due to intensive body
hausted air increases, against the direc- cooling might occur).
tion of an arrow it decreases.

28
NOTES

29
GETTING ACQUAINTED WITH THE TRACTOR

C151c

30
 GETTING ACQUAINTED WITH THE TRACTOR
DASHBOARD CONTROLS With engine running it is still lit up with
1. Engine ignition (yellow). Signalizes hydrostatic steering failure. If the en-
DEVICES DESCRIPTION the activity of device for an easier en- gine is at standstill, it must be lit up.
A - fuel gauge gine start. 14.Warning control (red). With engine
B - speedometer 2. PTO shaft disengagement control running it lights up with engine charg-
C - hours of operation pointer (red). ing or greasing failure. Lights up with
D - coolant gauge 3. Fuel (orange). Lights up with a remain- manual brake lever engaged.
der smaller than 1/6 - 1/10 of tank vol- 15.Symbols marking the number of en-
ume. gine revolutions, when nominal revo-
4. Headlights (blue). Lights up with lutions of rear PTO clutch are reached
headlights engaged. depending on the engaged number of
5. Manual brake (red). Lights up with rear PTO shaft revolutions.
engaged manual brake lever.
6. Not engaged.
7. Charging (red). With engine running it
lights up with charging failure. If the
engine is at standstill, it must be lit up.
8. Greasing (red). With engine running, it
lights up with oil pressure drop under
120 to 60 kPa. If the engine is at
standstill, it must light up.
9. Direction lights control of tractor
(green).
10.Direction lights control of 1st trailer
(green).
nd
11.Direction lights control of 2 trailer
(green).
12.Low air pressure control signalization.
Lights up with air pressure drop in the
system of air brakes for trailer under a
critical level, i.e. under 450 kPa.
13.Failure signalization control in the
system of hydrostatic steering (red).

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N041 C127 NM13N040

MANUAL FUEL CONTROL LEVER ENGINE RUN STOP CONTROL HYDRAULIC CONTROL
a - idle run By pulling the control out, there is an Hydraulic control panel with levers (A) is
b - maximum supply immediate engine operation stop and by placed in the area of right fender.
turning it slightly in a pulled out position, Hydraulic controls (B) are placed in front
The lever enables to set engine revolu- the position is locked. of driver’s seat.
tions in the whole range (a) to (b). After stopping the engine run, return the
control back.
If a control remains pulled out,
engine may not be started.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N042 C127 NM13N043

AUXILIARY HYDRAULIC PEDALS DIFFERENTIAL LOCK
SWITCHBOARD CONTROL 1. travel clutch pedal Differential lock is controlled by a pedal
Auxiliary hydraulic switchboard control (2) 2. foot brake pedals connected with a placed on the right side of driver’s seat.
is placed on the upper part of right flap Engaging differential lock is done by de-
fender. 3. foot fuel supply control pedal pressing a pedal, for the time of pedal
depression the lock is engaged, after re-
leasing the lock pedal, the pedal returns
to its original positional and the differen-
tial lock is disengaged.

When going through a bend, do

not use differential lock.
Engage differential lock with low en-
gine revolutions.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N044 NM13N045 NM13N046

REVERSING LEVER GEAR SHIFTING LEVER ROAD AND REDUCED SPEEDS
Reversing lever (1) serves for the Gear shifting lever serves for change of SHIFTING LEVER
change of tractor travelling direction. gear box gear. Road and reduced speeds shifting lever
serves for shifting gear groups.
F – Travelling forward; lever in the front Gear shifting is done with clutch pedal
N - Neutral depressed. H Road speeds
R – Reversing; lever at the back M Average speeds
N Neutral
Gear shifting is done with a tractor at L Reduced speeds
standstill and clutch pedal depressed.
Gear shifting is done with the tractor at
standstill and depressed clutch pedal.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N047 NM13N048
MANUAL BRAKE AND PTO SHAFT FRONT DRIVE AXLE CONTROL
DISENGAGEMENT LEVER LEVER
Manual brake and PTO clutch disen- Front drive axle engagement is done by Use front drive axle with rear
gagement levers are located on the left a lever (1) located on the left side of wheels slip to enhance the pull of
side of driver’s seat. driver’s seat. tractor.
a - Front drive axle disengaged When driving with front drive axle
1. manual PTO clutch disengagement b - Front drive axle engaged engaged on the road and hard
lever surface the maximum permitted
2. manual brake lever Engage front drive axle with standing speed is 15 km/h.
tractor. Driving with engaged front drive
axle causes increased front tires
wear.

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 GETTING ACQUAINTED WITH THE TRACTOR

NM13N004 NM13N005 NM13N049

PTO SHAFT DRIVE ENGAGEMENT PTO SHAFT REVOLUTIONS 540 AND BATTERY DISCONNECTOR
LEVER 1000 RPM SHIFTING LEVER Battery disconnector (1) is placed on the
Rear PTO shaft is engaged by a lever (1) Shifting 540 or 1 000 revolutions of rear right side of the tractor in front of the cab.
placed on the left side of driver’s seat. PTO shaft is done with the lever (1)
placed from the outside of the tractor a - Battery is connected
a- Dependent revolutions of PTO above the rear PTO shaft. b - Battery is disconnected
shaft drive through gear box –
revolutions are dependent on the a- 1 000 rpm With long-term dead parking, re-
engaged gear b- 540 rpm pairs, a failure, or accident, dis-
n- neutral position connect the battery immediately
b- Independent revolutions of PTO Gear shifting is done with the lever of by battery disconnector.
shaft drive – revolutions are de- PTO shaft drive engagement in (n) posi-
pendent on engine revolutions tion.
PTO shaft revolutions and the type
Gear shifting is done with a tractor at
of endpoint need to be selected
standstill and engaged manual clutch
dependent on the prescribed revo-
lever.
lutions of the aggregated machine.

36
 GETTING ACQUAINTED WITH THE TRACTOR

NM13N089
FUEL TANK
Fuel tank is located on the left side of the
tractor. A plastic tank with a volume of 80
litres is mounted as a standard.

Do not step on the tank!

FUEL TANK DRAIN PLUG

Fuel tank drain plug is in its bottom.

37
NOTES

38
 DRIVING OPERATION
Page
Before you start the engine ....................................................................................... 40
Starting the engine .................................................................................................... 40
If engine does not start.............................................................................................. 41
Ignition system failure signalization........................................................................... 41
Manipulation with starter ........................................................................................... 41
Immediately after start............................................................................................... 42
Engine heating .......................................................................................................... 42
∗ Coolant heater........................................................................................................ 43
Starting the engine while using coolant heater.......................................................... 43
Drive away ................................................................................................................ 44
Selection of road or reduced speeds......................................................................... 45
Gear shifting.............................................................................................................. 45
Selecting driving direction - Reversing lever ............................................................. 45
Gear shifting from lower to higher gears ................................................................... 46
Gear shifting from higher to lower gears ................................................................... 46
Travelling up the slope .............................................................................................. 47
Travelling down the slope ......................................................................................... 47
Differential lock ............................................................................................................ 48
Front drive axle control.............................................................................................. 48
Driving with front drive axle engaged ........................................................................ 48
Before driving with a new tractor, Foot brakes pedals.................................................................................................... 49
first become acquainted with the Trailer and semi-trailer air brakes.............................................................................. 49
gear shifting scheme and try Notification signalization of air pressure drop............................................................ 49
individual positions of the gear Single hose air brakes for trailer................................................................................ 50
shifting lever with engine at Stopping the tractor - manual brake .......................................................................... 51
standstill. Stopping the engine .................................................................................................. 51
In normal operation before you Leaving the tractor .................................................................................................... 51
set off, you have to make sure Hydrostatic steering failure warning signalization.......................................................... 52
that technical condition corre- Important notification................................................................................................. 52
sponds with safe operation re-
quirements.

39
 DRIVING OPERATION

NM13N051
BEFORE YOU START THE ENGINE STARTING THE ENGINE If ignition control starts only blink-
Before you start the engine, make 1. Insert the key to the switch box - posi- ing instead of lighting, there is a
sure that: tion “0”. failure in the ignition system (ch.
1. tractor is properly braked 2. Depress the clutch pedal (start Ignition system failure signaliza-
2. PTO shaft drive engagement breaker is switched). tion). Have the signalized failure
lever is in neutral position 3. Shift reversing lever to neutral posi- removed in a service.
3. the main gear shifting lever is tion (start breaker is switched). 7. As soon as the control goes out (5 s
in neutral position 4. Pull manual clutch lever (start breaker max) turn the key from the position to
If the clutch pedal is not depressed, it is is switched). position “II” (start).
not possible to start the engine – switch 5. Set the manual fuel control lever to 8. After starting the engine, release the
for securing start is not switched. idle run position. key immediately, it automatically re-
6. Switch the key of switch box from turn to position “I”. Do not start
Note: Before starting we recommend to position “0” to position “I”. Thermostart longer than 15 s.
pressurize fuel system by several ignition control lights up. Wait for the
heaves of manual feeding pump. time when ignition control goes out
(the time is dependent on the tem-
perature of coolant).

40
 DRIVING OPERATION

NM13N091 NM13N092 NM13N093

IF ENGINE DOES NOT START IGNITION SYSTEM FAILURE MANIPULATION WITH STARTER
Return the key to position “0“, wait 30 SIGNALIZATION It is forbidden to start by short
seconds and repeat the start. Ignition system failure is signalized by circuiting starter clamps!
A maximum of 6 starting cycles is al- ignition control blinking. Tractor is started only from
lowed (15 seconds start and 30 seconds - If ignition control is blinking with engine driver’s seat!
interruption is one cycle). Another engine at standstill once in a second, ignition With any manipulation or starter
start is allowed after the starter cools off in emergency mode occurs as with low repair it is necessary to discon-
to surrounding temperature. temperatures regardless of the tem- nect minus battery pole and all
Never help a stopping tractor with perature of coolant. shifting levers including PTO
a starter. There is a danger of - If ignition control is blinking twice in a shaft shifting lever must be in
starter damage. second with engine at standstill, igni- neutral position!
tion is not working. Starter contacts are covered with
- If ignition control is blinking perma- a cap.
nently with engine running, there is a
failure of ignition regulator and ignition
has not been completed. Failure must
be removed forthwith, since there is
the danger of accumulator depletion.

41
 DRIVING OPERATION

NM13N099 NM13N098
IMMEDIATELY AFTER START ENGINE HEATING
After starting, set revolutions to Do further heating of the engine when driving. Heating engine by lengthy idle
800 - 1000 rpm and let engine run or abrupt revolutions increase is harmful to the engine.
run without load for a period of If the temperature of coolant has not reached 45°C, do not overcome engine
app. 2 minutes. revolutions over 2000 rpm.
Check greasing, charging and other
functions ensuring proper engine opera-
tion (controls must go out) in this time.
The time of engine operation without
load must be observed, in particular in
winter period.

42
 DRIVING OPERATION

C209 G210a

∗ COOLANT HEATER STARTING THE ENGINE WHILE USING COOLANT HEATER

Is mounted on the right side of engine With low temperatures of the surroundings, engine starting eases heating coolant.
block. Lead-in electrical installation and its protection against dangerous contact must be
output 1000 W done pursuant to valid regulations
voltage 220 V 1. First plug the plug to the heater.
2. Then connect heater to electrical network of the voltage of 220 V.
With regard for the lower engine wear with low temperature, the use of heater is
recommended by manufacturer. The duration of heating is dependent on the sur-
rounding temperature (1 – 2 hours before the expected start).
After completing the heating, disconnect the device first from electrical net-
work and only then disconnect the plug from the heater!
Danger of injury due to electricity!
It is necessary to ensure tractor operator’s instruction and regular revi-
sion of coolant heater including feeding cable pursuant to valid legisla-
tion of the state where the tractor is operated at least prior to each win-
ter period.

43
 DRIVING OPERATION

NM13N094
DRIVE AWAY A very fast drive away may cause
1. Depress the clutch pedal. overload of driving set, increased
2. Shift the main shifting lever to neutral position. fuel consumption, excessive tires
3. Start the engine. wear and load damage. Drive
4. Select road or reduced gears. away with 1st gear to be used
5. Shift the reversing lever to the tractor’s travel direction (to the front or reversing). only when driving with a heavy
6. Engage applicable gear for tractor’s start trailer up the slope and in difficult
7. Increase engine revolutions slightly. terrain.
8. Prepare manual brake for unbraking.
9. Release the clutch pedal only to the point of travel engagement and with simul-
taneous increase of engine revolutions continue in smooth release of clutch
pedal.
10. Unbrake manual brake completely.
11. Drive away smoothly and slowly.

44
 DRIVING OPERATION

NM13N046 NM13N045 NM13N044

SELECTION OF ROAD OR REDUCED GEAR SHIFTING SELECTING DRIVING DIRECTION -
SPEEDS Gear shifting lever serves for changes of REVERSING LEVER
Road and reduced gears lever serves for gear box gears. Reversing lever (1) serves for the
shifting groups of gears. change of tractor’s travel direction.
Gear shifting is done with a depressed
H Road speeds clutch pedal. F – drive forward, lever in the front
M Average speeds N - neutral
N Neutral Only gears are shifted by main R - reversing; lever at the back
L Reduced speeds gear shifting lever, the direction
of travel is shifted by reversing Gear shifting is done with tractor at
lever, standstill and clutch pedal depressed.
Gear shifting to be done with
tractor at standstill and de-
pressed clutch pedal.

45
 DRIVING OPERATION

NM13N052 NM13N058
GEAR SHIFTING FROM LOWER TO GEAR SHIFTING FROM HIGHER TO
HIGHER GEARS LOWER GEARS
Depress the clutch pedal (clutch disen- Depress the clutch pedal and shift the
gaged). At the same time release the gear shifting lever through neutral to
pedal of foot fuel control and shift the lower gear.
applicable higher gear. Release the Note: For increasing the life cycle of syn-
clutch pedal (clutch is engaged) chrones, it is possible to shift from higher
smoothly and at same time increase to lower gear with the so-called double
engine revolutions. declutching
Note: For increasing the life cycle of syn-
chrones, it is possible to shift from higher
to lower gear with the so-called double
declutching.

46
 DRIVING OPERATION

NM13N095 NM13N096
TRAVELLING UP THE SLOPE TRAVELLING DOWN THE SLOPE
Shift gears from higher to lower Travelling down the slope without
gears in time when travelling up en engaged gear is forbidden. If
the slope so as to avoid drop of you are going down a longer
engine revolutions under 800 rpm slope engage the lower gear the
and do not allow ride leading to steeper the slope. Engage the
stopping the engine for overload. lower gear before the slope if
possible.
Note: The gear with which you will relia-
bly overcome ascension, it is the one
with which you will safely go down.

47
 DRIVING OPERATION

NM13N043 NM13N048 C220

DIFFERENTIAL LOCK FRONT DRIVE AXLE CONTROL DRIVING WITH FRONT DRIVE AXLE
Differential lock is controlled by a pedal Engaging front drive axle is done by a ENGAGED
placed on the right side of driver’s seat. lever (1) placed on the left side of Use front drive axle with slip of
Differential lock is engaged by depress- driver’s seat. rear wheels to increase pull of
ing the pedal, for the time of pedal de- a - Front drive axle disengaged tractor.
pressing is the lock engaged, after re- b - Front drive axle engaged On the road and on hard surface
leasing the pedal of the lock, the pedal causes driving with front drive
returns to its original position and differ- Engaging front drive axle to be axle engaged increased tire wear
ential lock is disengaged. done with tractor at standstill. of front wheels.
When going through a bend, do Permanent engagement of front drive
not use differential lock. axle is admissible; if front mounted agri-
Engage differential lock with low culture machine or tool is connected.
engine revolutions and tractor at This condition is given in operation man-
standstill. ual of the applicable machine.
Maximum permitted speed of these sets
is 15 km/h.

48
 DRIVING OPERATION

NM13N112 NM13N097 NM13N075

FOOT BRAKES PEDALS TRAILER AND SEMI-TRAILER AIR NOTIFICATION SIGNALIZATION OF
Foot brakes are disc, wet, mechanically- BRAKES AIR PRESSURE DROP
controlled and two-pedaled. Trailer (semi-trailer) air brakes control Drop in pressure under 450 kPa is sig-
When going on the road, both pedals and tractor brakes control is done in nalized by a red control lighting up on the
must be connected with a flap. such a way that the braking effect of both dashboard.
A - Standard pedals with a flap vehicles is synchronized. The tractor with a braked trailer
B - Pedals with flap for trailer air brakes When travelling with a connected or semi trailer must not continue
When going on the road, both trailer or semi-trailer foot brake in travel with pressure drop in air
pedals must be joined with a flap. pedals must be connected and pressure system below 450 kPa
Disconnected pedals for braking secured with a flap! (control light up), if air pressure
the right or left wheel to be used When braking with a single does not go up.
only when working in terrain and brake pedal, air brakes of a
on the field. trailer are not in operation.
Note: When travelling down a steep
slope with a trailer or semi trailer
equipped with air brakes, it is necessary
to brake with a foot brake before the
descent starts!

49
 DRIVING OPERATION

SINGLE HOSE AIR BRAKES FOR TRAILER

Connecting head of single hose brakes (1) is located on the rear panel of quick-
couplers.

Connecting head must be closed with flaps after disconnection or without a

connected trailer, semi trailer.

Operation pressure is set by control valve to 600 ± 20 kPa.

When connecting the trailer (semi trailer) with maximum permitted weight
approved for the type of tractor at stake is the maximum set speed of 30
km/h!
Maximum permitted speed of set is given by maximum permitted speed of the
slower vehicle of the set.

50
 DRIVING OPERATION

NM13N060 NM13N061 NM13N062

STOPPING THE TRACTOR - MANUAL STOPPING THE ENGINE LEAVING THE TRACTOR
BRAKE After tractor’s work when the engine was Before leaving the tractor with a safety
Stop the tractor gradually in standard properly loaded, its cool of must be en- cab do not forget to remove the key from
conditions. Shortly before stopping: sured. the switch box in position “0” (only with
1. Depress the clutch pedal. 1. Before stopping the engine, lower the engine at standstill – charging control
2. Shift the main gear shifting lever to revolutions to 800 - 1000 rpm and al- must be on) and lock the cab. (The key
neutral position. low it to run without load for a time pe- cannot be pulled out in positions I and II)
3. With every stop over, secure the trac- riod of about 5 minutes. Tractor must be secured against
tor against spontaneous drive away 2. Shift manual fuel control lever to idle spontaneous drive away:
by a manual brake. Engagement of run position 1. engine disengaged
manual brake is signalized by a lit 3. Hitch up a stopping g device and hold 2. 1st gear engaged
control on the dashboard. it in hitched up position until there is 3. braked with the manual brake
engine stop (push the control back in). If the tractor is on the slope wheels must
4. After stopping the engine, the key can be made stable with shims.
be shifted from position "I" to position
"0"

51
 DRIVING OPERATION

C231 NM13N087
HYDROSTATIC STEERING FAILURE IMPORTANT NOTIFICATION
WARNING SIGNALIZATION If greasing, charging or hydrostatic steer-
Hydrostatic steering pump failure is with ing failure controls light up, stop the
pressure drop under 120 kPa behind the engine immediately and contact service.
pump signalized on the dashboard by an You will prevent a serious failure or trac-
applicable symbol. tor accident.
Note: When starting the engine or with
low engine revolutions, the control may
be blinking, if after starting or revolutions
increase engine control goes out, it is not
a failure. The system is alright.

52
 TRACTOR RUN-IN
Page
General principles of new tractor run-in in first 100 hours of operation .................. 54
In first 10 hours of operation...................................................................................... 54
From 100 hours of operation ..................................................................................... 55

Before driving a new tractor, first

get acquainted with the gear shift-
ing scheme and try out individual
positions of gear shifting lever
with engine at standstill.
Before you drive off in normal
operation you must make sure
that technical condition corre-
sponds with the conditions of safe
operation.

53
 TRACTOR RUN-IN

NM13N090 NM13N100
GENERAL PRINCIPLES OF NEW TRACTOR RUN-IN IN FIRST 100 HOURS OF IN FIRST 10 HOURS OF OPERATION
OPERATION - Perform run-in in traffic
During first 100 hours of operation: - tighten fastening nuts of front and rear
- Load tractor in a normal way, avoid operation with low or maximum engine revolu- wheels including connection bead / rim
tions with prescribed torque
- Avoid excessive idle run operation
- Check oil levels in engine often (during this time increased oil consumption is nor-
mal)
- Check screw joints in particular in supporting parts of tractor
- Learned insufficiencies to be removed immediately, you will thus prevent subse-
quent damage or endangered operation
- Keep the same procedure also after tractor complete overhaul

54
 TRACTOR RUN-IN

C256
FROM 100 HOURS OF OPERATION
After drive in completion you can work
with tractor without limitations.
Engine operation mode with Major trac-
tors:

Recommended
operation revolu- 1400 - 2300 rpm
tions
Idle run revolutions 800±25 rpm
Operation oil pres- 0.2 – 0.5 MPa
sure
Oil pressure with
idle run revolutions min. 0.05 MPa
Max. coolant tem-
perature 106°C

55
NOTES

56
 TRANSPORT USAGE
Page
Front hook ................................................................................................................. 58
Multistage adjustable suspension ............................................................................. 58
Vertical adjustment and multistage suspension disassembly .................................... 58
Modular suspension system for trailers and semitrailers ........................................... 59
Swing drawbar bracket module ................................................................................. 59
Swing drawbar .......................................................................................................... 59
Aggregation with trailer and semitrailer ..................................................................... 59
Maximum permitted vertical static suspensions load for trailers and semitrailers ..... 60

Before you set out, make sure

that the technical state of your
tractor corresponds with the con-
ditions of safe operation.
If a trailer or an auxiliary unit are con-
nected, check their connection and
proper attachment of load. Never leave
tractor when running to connect the trail-
er alone. Mind also the safety of your as-
sistant.

57
 TRANSPORT USAGE

NM13N023 E302 NM13N024

FRONT HOOK MULTISTAGE ADJUSTABLE VERTICAL ADJUSTMENT AND
Used only for towing tractor without con- SUSPENSION MULTISTAGE SUSPENSION
nected trailer or a different connected Serves for connecting double axle or DISASSEMBLY
machinery. lighter single-axle trailers. Guidance After pushing the catch (1), control lever
Use a drawbar or a cable for re- nozzle is vertically adjustable. When (2) is unlocked, by subsequent shift of
leasing tractor. working with various agricultural ma- the lever (2) in the direction of an arrow
Never use chains! The possibility chines it is necessary to adjust the sus- multistage suspension is released and it
of fatal injury if a chain pulls pension vertically or demount where is possible to adjust it vertically or disas-
apart! necessary. semble. After adjusting multistage sus-
It is forbidden to use tractor axles pension, shift the lever (2) back to the
(individual travelling wheels) such original position until the catch (2) is re-
as reeling jack when rescuing a leased.
sunken tractor.

58
 TRANSPORT USAGE

E306 NM13N097
MODULAR SUSPENSION SYSTEM SWING DRAWBAR BRACKET AGGREGATION WITH TRAILER AND
FOR TRAILERS AND SEMITRAILERS MODULE SEMITRAILER
1. Demount locking screw (1) Swing drawbar bracket module is placed Tractor must be aggregated only with a
2. Secure the module against drop, un- in the bracket of multistage suspension. tractor trailer for balancing tractor opera-
lock and demount pins (2) tion brakes or hydraulic brakes of trailer.
3. Protrude the module from the bracket SWING DRAWBAR Static load of tractor rear axle in aggre-
in downward direction Disassembly: gation with semitrailer must not exceed
1. Unlock and demount pins (1) the value of maximum permitted load.
Proceed reversely with assembly. 2. Protrude swing drawbar in the direc-
tion of an arrow

Proceed reversely with assembly.

59
 TRANSPORT USAGE
MAXIMUM PERMITTED VERTICAL STATIC SUSPENSIONS LOAD FOR TRAILERS AND
SEMITRAILERS
Permitted
Ø of sus- Permitted Ø of sus-
vertical
Suspension type pension Suspension type vertical pension
static
pin static load pin
load

2 000 kg 31 mm 736 kg 31 mm

Maximum weight of aggregated braked trailer or semitrailer must not exceed the value given on
tractor’s production plate and the data given in vehicle identification card. Maximum speed of the
set is given by the maximum permitted speed of the slower vehicle of the set.

60
 DRIVE OF AGRICULTURAL MACHINES
Page
Working with PTO shaft ............................................................................................ 62
PTO shaft covers ...................................................................................................... 62
Manual disengagement of PTO shaft clutch lever..................................................... 63
PTO shaft drive engagement lever............................................................................ 63
PTO shaft revolutions 540 and 1000 rpm shifting lever............................................. 63
Rear PTO shaft – independent revolutions ............................................................... 64
Rear PTO shaft – dependent revolutions .................................................................. 64
Maximum transmitted output ..................................................................................... 65
drive of machines with greater inertia masses .......................................................... 65

Before engaging the machine

driven by PTO shaft of tractor,
check that the revolutions of PTO
shaft of the machine and tractor
are in accord (540 rpm or
1000 rpm). Different revolutions
can lead to severe damage and
injuries.

61
 DRIVE OF AGRICULTURAL MACHINES

NM13N001 NM13N002 NM13N003

WORKING WITH PTO SHAFT PTO SHAFT COVERS
1. When working with PTO shaft, mind proper attachment of all covers. The cover of PTO shaft (1) can be de-
2. After completing the work, always mount the PTO shaft cover back. mounted by unscrewing the cover in the
3. Connecting and disconnecting cardan shaft of aggregated machine to direction of arrows.
rear PTO shaft of the tractor to be done only with the engine at halt, dis- The cover of PTO shaft (2) must be
engaged PTO shaft clutch and dependent and independent revolutions of pushed in the direction of and arrow and
PTO shaft lever in (N) – neutral position! tilted over in the direction from tractor for
4. Connecting and disconnecting cardan shaft of aggregated machine to working with rear PTO shaft.
front PTO shaft of tractor to be done always only with engine at standstill
and disengaged PTO shaft!
5. Any repairs or cleaning of parts of aggregated machines driven by PTO
shaft to be done only with engine at standstill, disengaged PTO shaft
clutch and dependent and independent PTO shaft revolutions lever in (N)
- neutral position.
6. After ending the works with rear PTO shaft it is necessary to shift de-
pendent and independent PTO shaft revolutions lever to (N)-neutral posi-
tion.

62
 DRIVE OF AGRICULTURAL MACHINES

NM13N008 NM13N004 NM13N005

MANUAL DISENGAGEMENT OF PTO PTO SHAFT DRIVE ENGAGEMENT PTO SHAFT REVOLUTIONS 540 AND
SHAFT CLUTCH LEVER LEVER 1000 RPM SHIFTING LEVER
By pulling manual clutch disengagement Rear PTO shaft is engaged with a lever Shifting 540 or 1 000 revolutions of rear
lever to upper position, disengagement (1) shaft drive placed on the left side of PTO shaft is done with a lever (1) placed
of PTO shaft clutch occurs. The upper driver’s seat. on the outer side of tractor on rear PTO
position of the lever is signalized by a lit shaft.
control on a dashboard. The lever is a- dependent revolutions of PTO
automatically locked with a catch in the with PTO shaft drive via gearbox a- 1 000 rpm
upper position. The lever can be – revolutions are dependent on b- 540 rpm
unlocked and return to the lower position the engaged gear
by lifting the lever and pressing the but- n- Neutral position Shifting is done with an engine at stand-
ton on the forefront of the lever. b- independent revolutions of PTO still and lever of engaging PTO shaft
Upper position - clutch disengaged shaft drive – revolutions are de- drive in (n) position.
Lower position - clutch engaged pendent on engine revolutions
If manual disengagement of the PTO shaft revolutions need to be
clutch lever is pulled for a longer Gear shifting is done with engine at selected depending on the pre-
period of time, increased wear of standstill and engaged manual clutch scribed revolutions from aggre-
lamely of PTO shaft occurs. lever. gated machines.

63
 DRIVE OF AGRICULTURAL MACHINES

NM13N006 NM13N007
REAR PTO SHAFT – INDEPENDENT REVOLUTIONS REAR PTO SHAFT – DEPENDENT REVOLUTIONS
With independent revolutions of rear PTO shaft the number of With dependent revolutions of rear PTO shaft the number and
PTO shaft revolutions is dependent on the number of engine the direction of PTO shaft revolutions is dependent on the
revolutions. shifted gear of reversing lever, engaged speed gear and the
PTO shaft drive engagement lever must be shifted to (b) posi- group of gears engaged by reduction lever.
tion. PTO shaft drive engagement lever must be shifted in (a) posi-
Pulling the lever of manual PTO shaft clutch disengagement tion.
serves for short-term interruption of torque transmission from Depressing the clutch pedal serves for short-term interruption
engine. of torque transmission from engine.
The lever of PTO shaft drive must be shifted to (n) position for It is necessary to shift the lever of PTO shaft drive engagement
longer interruption of torque transmission from engine. to (n) position or to shift the lever of gears or the lever of road
The number of PTO shaft independent revolutions, see Main and reduced speeds to (n) position for longer interruption of
technical parameters chapter. torque from engine.
Manual disengagement of PTO shaft clutch lever is
shifted in (a) position non-functional with lever of PTO
shaft drive engagement.
The number of dependent PTO shaft revolutions, see Main
technical parameters chapter

64
 DRIVE OF AGRICULTURAL MACHINES

C353 C354
MAXIMUM TRANSMITTED OUTPUT DRIVE OF MACHINES WITH
PTO shaft Transmitted GREATER INERTIA MASSES
output (CRUSHERS, ROTARY HARROWS,
rear REAPERS, ETC.)
1000 rpm Full engine output Cardan shaft fro drive of these machines
must be equipped with the so-called
540 rpm Full engine output
free wheel, which ensures the discon-
nection of torque transmission with ret-
roactive effect from the machine to trac-
tor.

65
NOTES

66
 HYDRAULIC EQUIPMENT
Page
Hydraulic equipment .....................................................................................68
Hydraulic control panel..................................................................................69
Means of internal hydraulic circuit regulation................................................69
Internal hydraulic circuit control elements.....................................................70
Free (floating) position ..................................................................................70
Speed of three-point linkage lowering control...............................................71
Hydraulic sensitivity system control ..............................................................71
Position regulation of rear three-point linkage heave ...................................72
Power regulation of three-point linkage heave..............................................73
Mixed regulation of three-point linkage heave ..............................................74
External hydraulic circuit ...............................................................................75
Extrernal hydraulic circuit control elements ..................................................75
Two-section switchboard external hydraulic circuit controlling
levers function ...............................................................................................76
One-section switchboard external hydraulic circuit controlling
levers function ...............................................................................................77
Quick-couplers engagement and disengagement ........................................78
Connecting machines and tools to External hydraulic circuit........................79
Connecting machines and tools assembled from more parts.......................79

It serves for heaving and lowering agri-

cultural machines and tools connected in
rear three-point linkage

67
 HYDRAULIC EQUIPMENT

C402
HYDRAULIC EQUIPMENT
Is made up from internal and external
circuit
The source of pressure oil is gear pump.
Oil is taken from common filling of gear-
box and final drive housing.

Hydraulic pump is unswitchable. Pump is

in operation with engine running. Sup-
plied amount 50 l/min.

The pressure derived in hydraulic set by

hydraulic pump is limited by a locking
valve to 18 MPa.

68
 HYDRAULIC EQUIPMENT

NM13N009 NM13N101
HYDRAULIC CONTROL PANEL MEANS OF INTERNAL HYDRAULIC CIRCUIT REGULATION
Hydraulic control panel is placed in the Hydraulic system enables three means of heave three-point linkage control.
area of right fender. Position regulation (fig.1) where some tools connected in three-point linkage are kept
External hydraulic circuit (A) enables automatically at constant height (position) to tractor.
control of external hydraulic circuit Mixed regulation (fig. 2) which is the combination of position and power regulation. It
(quick-couplers). is suitable mostly for tillage on lots with different soil resistance.
Internal hydraulic circuit (B) enables rear Power regulation (fig. 3), with which tools connected in three-point linkage are auto-
three-point linkage control. matically vertically adjustable depending on the change in soil resistance.
All means of regulation enable also work with tools which has supporting wheel in the
so-called free (floating) position.

69
 HYDRAULIC EQUIPMENT

NM12N010 NM13N011
INTERNAL HYDRAULIC CIRCUIT FREE (FLOATING) POSITION
CONTROL ELEMENTS Free (floating) position enables work with
1. Lever for setting power or position a tool which has supporting wheel. The
regulations arms of rear three-point linkage are free
2. Lever for setting floating position, in this position.
height positioning of three-point link- Shift lever (2) to front position (a)
age with position regulation or mixed Position of lever (1) is not decisive
regulation
3. Speed of three-point linkage lower-
ing control
4. Hydraulic sensitivity system control

70
 HYDRAULIC EQUIPMENT

NM13N012 NM13N013
SPEED OF THREE-POINT LINKAGE HYDRAULIC SENSITIVITY SYSTEM
LOWERING CONTROL CONTROL
Speed of three-point linkage lowering Hydraulic sensitivity system control (4)
control (3) serves for setting the speed of serves for setting hydraulic system sen-
lowering three-point linkage arms. When sitivity with power or mixed regulation.
turning the control of speed of three- When turning the control in the direction
point linkage lowering in (b) direction the (a), the sensitivity of the system in-
speed of three-point linkage arms lower- creases, in (b) direction it decreases.
ing decreases, in (a) direction it in-
creases. If we turn speed of lowering
control (b) to stop, the arms of three-
point linkage cannot be lowered.

71
 HYDRAULIC EQUIPMENT

NM13N014
POSITION REGULATION OF REAR THREE-POINT LINKAGE HEAVE
Position regulation of rear three-point linkage heave is a means of regulation with which the tools connected in three-point linkage
is kept automatically at constant height (position) to tractor.
Shift lever (1) to front position (d). Perform vertical adjustment of rear three-point linkage with a lever (2) in (b) range. Height set-
ting is smooth in the range of 1-9. With number 1, there are three-point linkage arms in lower position, with number 9 in upmost
position. Position (c) is a transport position, in which tools connected in rear three-point linkage are heaved to maximum.

For transporting tools connected in rear three-point linkage always use position regulation.
After lifting tools to transport position, close oil flow through hydraulics to stop by turning the control of speed of three-
point linkage lowering (3) in the direction of an arrow. If tools hinged in three-point linkage cannot be lowered in transport
position, check the position of the speed of lowering control (3) – turn it against the direction of an arrow.
If tools hinged in rear three-point linkage are long and heavy, there can be blockage of three-point linkage arms in trans-
port position during transport. If lowering speed control (3) is permitted and still a tool it cannot be lowered, move the lever
(2) to floating position (c) for a short time and immediately return to the lowering range (d). The arms of rear three-point
linkage start dropping according to a set lever (2).

72
 HYDRAULIC EQUIPMENT

NM13N015
POWER REGULATION OF THREE-POINT LINKAGE HEAVE
Power regulation of three-point linkage heave is a means of regulation with which the tools connected in rear three-point linkage
is automatically vertically readjusted depending on the change in soil resistance.
Place lever (2) to (f) position.
Shift lever (1) to (g) position, start tractor and by shifting lever (1) from (g) position in the direction of an arrow, set the depth of oil
cultivation (in (g) position, the depth of soil cultivation is smallest).
As soon as you determine the depth of soil cultivation, the lever (1) must be kept in constant position (1) and at the end of the row
to always heave tool connected in rear three-point linkage by only shifting the lever (2) to (e) position. By shifting lever (2) to (f)
position, you will return tool back to working position.

If there is oscillation of rear three-point linkage due to variable soil resistance, this can be limited by setting lower sensitiv-
ity of hydraulic system by turning the control (4) in the direction of an arrow.

73
 HYDRAULIC EQUIPMENT

NM13N016
MIXED REGULATION OF THREE-POINT LINKAGE HEAVE
Mixed regulation of three-point linkage heave is a means of regulation with which the tools connected in rear three-point linkage is
automatically vertically adjusted depending on the change in soil resistance, while it is prevented for the depth to grow in soil cul-
tivation with smaller soil resistance.
The depth setting of soil cultivation is done with a lever (1) as is the case with Power regulation of three-point linkage heave.
Shift lever (2) then in the direction of an arrow to the moment, when three-point linkage arms start lifting lightly. Mixed regulation
is set by this. Tools connected in rear three-point linkage can be lifted only by shifting the lever (2) to (e) position at the end of a
row. Tool is returned back to working position by shifting the lever (2) to original setting.

74
 HYDRAULIC EQUIPMENT

NM13N017 NM13N018
EXTERNAL HYDRAULIC CIRCUIT EXTRERNAL HYDRAULIC CIRCUIT CONTROL ELEMENTS
Supplies pressure oil for hydraulic de- External hydraulic circuit control levers are placed on the right fender.
vices connected to external outlet of hy-
draulics finished with quick-couplers. Depending on tractor equipment the following switchboards can be mounted to ex-
Quick-coupler sockets with 12.5 mm ternal hydraulic circuit.
clearance correspond to international A - Two-section switchboard
ISO recommendation. B - One-section switchboard

a - lever (a) controlling quick-couplers (1) and (2)

b - lever (b) controlling quick-couplers (3) and (4)

Quick-coupler (0) is directly connected with the area of final house driving and is de-
signed for returned oil from external hydraulic devices (e.g. from rotation hydro en-
gines etc.).

75
 HYDRAULIC EQUIPMENT

NM13N019 NM13N020
TWO-SECTION SWITCHBOARD EXTERNAL HYDRAULIC CIRCUIT CONTROLLING LEVERS FUNCTION
Lever (a) function
N - Neutral position. Outlets to a quick-coupler (1) and (2) are closed and oil in the connected hydraulic device is locked. Lever
(a) is locked in this position.
1 - Pressure in quick-coupler (1). Quick-coupler (2) is connected with waste. After release, lever returns to position (N).
2 - Pressure in quick-coupler (2). Quick-coupler (1) is connected with waste. After release, lever returns to position (N).
P - Floating position. Both quick-couplers (1) a (2) are connected with waste and oil can freely flow in them in both directions.
Lever (a) is locked in this position.

Lever (b) function

N - Neutral position. Outlets to quick-couplers (3) and (4) are locked and the oil in the connected hydraulic device is blocked.
Lever (b) is locked in this position.
3 - Pressure in quick-coupler (3). Quick-coupler (4) is connected with waste. After release, lever returns to position (N).
4 - Pressure in quick-coupler (4). Quick-coupler (3) is connected with waste. After release, lever returns to position (N).

Quick-coupler (0) is directly connected with the area of final house driving and is designed for returned oil from external hydraulic
devices (e.g. from rotation hydro engines etc.).

76
 HYDRAULIC EQUIPMENT

NM13N021 NM13N022
ONE-SECTION SWITCHBOARD EXTERNAL HYDRAULIC CIRCUIT CONTROLLING LEVERS FUNCTION
Lever (a) function
N - Neutral position. Outlets to quick-couplers (1) and (2) are closed and oil in the connected hydraulic device is blocked.
Lever (a) is locked in this position.
1 - Pressure in quick-coupler (1). Quick -coupler (2) is connected with waste. After release, lever returns to position (N).
2 - Pressure in quick-coupler (2). Quick-coupler (1) is connected with waste. After release, lever returns to position (N).
P - Floating position. Both quick-couplers (1) a (2) are connected with waste and oil can freely flow in them in both directions.
Lever (a) is locked in this position.

Quick-coupler (0) is directly connected with the area of final house driving and is designed for returned oil from external hydraulic
devices (e.g. from rotation hydro engines etc.).

77
 HYDRAULIC EQUIPMENT

P+11N014
QUICK-COUPLERS ENGAGEMENT
AND DISENGAGEMENT
With quick-couplers engagement
and disengagement take greater
care with regard for residual oil,
remaining in socket or on a plug
of a quick-coupler.
This residual oil must be removed
from ecological reasons after
each quick-couplers disconnec-
tion with any textile material.

78
 HYDRAULIC EQUIPMENT
CONNECTING MACHINES AND TOOLS TO EXTERNAL HYDRAULIC CIRCUIT
Connecting double-acting roller
Connect double-acting roller always to quick-couplers of one section.

Connecting machines and tools assembled from more parts

When working with agricultural machines which are assembled from more parts (combiners, shears, harrows), in which side
frames are jointly connected to a central frame, tilted to vertical position by separate hydraulic rollers in transport, controlled by
tractor external hydraulic circuit, it is advisable to connect lifting branches of rollers to quick-couplers (2) or (4), which are
equipped with a reverse valve.

Connecting rotation hydro engine

If there is a rotation hydro engine connected to external hydraulic outlet, it is necessary to connect its reverse branch, always to a
quick-coupler (0).

Connecting reversing rotation hydro engine

Reversing rotation hydro engine must be for function connected to quick-couplers of one section. When connecting hydro en-
gines, securing valves need to be included in both branches, which reliably restrict pressure peaks with machine run-out. Waste
from these valves is connected to a quick-coupler (0).

Auxiliary machines using oil filling of external hydraulic circuit must be filled with the same kind of oil, which is
recommended for gear system of the tractor!
Quick-couplers sockets of an auxiliary machine need to be properly cleaned before connecting.

79
NOTES

80
 LINKAGES
Page
Rear three-point linkage ............................................................................................ 82
Safety principles when working with a three-point linkage ........................................ 82
Vertical adjusment of lifting draw bars....................................................................... 83
fixed and free position of lower hydraulic draw bars.................................................. 83
Limiting draw bars ..................................................................................................... 83
Upper draw bar ......................................................................................................... 84
Upper draw bar ......................................................................................................... 84
Selection of holes in bracket ..................................................................................... 84
∗Lower draw bar with slipping out end pieces ........................................................... 85
∗Lower draw bar with CBM hooks............................................................................. 85
Securing lower draw bars with CBM hooks ............................................................... 85

81
 LINKAGES
REAR THREE-POINT LINKAGE
Serves for connecting carrier-mounted or
semi mounted agriculture machines and
tools with linkage points of category I. or
II. pursuant to ISO.
The categories differ based on the length
of linkage axis, which is the distance of
the centre of balls of lower linkage joints
with connected tool.
Category I.
Length of linkage axis 728 mm
∅ of holes of connecting 28 mm
balls of lower draw bars
NM13N102
pursuant to ISO
SAFETY PRINCIPLES WHEN WOR-
∅ of upper draw bar hole 25 mm
KING WITH A THREE-POINT LINKAGE
Persons who are not charged
Category II. with work with auxiliary device of
Length of linkage axis 870 mm a tractor must not stand between
∅ connecting balls holes 28 mm a tractor and connected machin-
of lower draw bars pursu- ery (tools) - (A).
ant to ISO Do not park tractor with mounted
∅ of upper draw bar hole 25 mm tools in a lifted position (B).
When driving without tools it is
1. Upper draw bar necessary to connect lower draw
2. Lift rod left bars (5) by springs and upper
3. Lift rod right draw bars (1) to be placed to a
flexible linkage! When transport-
4. Limiting draw bars ing tools it is necessary to adjust
5. Lower draw bars limiting draw bars (4) of lower
draw bars so that there would be
no unwanted side movement of
NM13N053 tools!

82
 LINKAGES

E453 E454 NM13N054

VERTICAL ADJUSMENT OF LIFTING FIXED AND FREE POSITION OF LIMITING DRAW BARS
DRAW BARS LOWER HYDRAULIC DRAW BARS Limiting draw bars (1) limit, or completely
For vertical adjustment of lifting draw Fixed position of lower draw bars of hy- exclude side swing of lower draw bars.
bars protrude a beam (1) in the direction draulics fig.(A): The adjustment of left and right limiting
of an arrow and by turning a beam do The head of the pin (1) and a pad (2) are draw bar is done by inserting a peg and
the setting. mounted horizontally. to some of the holes (b).
Both limiting draw bars must be
Free position of lower draw bars of hy- mounted at all times.
draulics fig.(B):
The head of the pin (1) and a pad (2) are
mounted vertically.
Free position enables free connection of
a tractor and agriculture tools. Both ends
of draw bars can in this case move freely
vertically one against another.

83
 LINKAGES

NM13N055 NM13N056 NM13N057

UPPER DRAW BAR UPPER DRAW BAR SELECTION OF HOLES IN BRACKET
Upper draw bar (1) is horizontally adjust- When prolonging an upper draw The connection of upper draw bar to
able. It is connected to a tractor to one of bar, it is necessary to mind both some of the holes (a), (b) or (c) of brack-
the four holes of the bracket, which joints to be unscrewed from the et influences:
transfer the power from the connected tube of the draw bar to the same the sensitivity of hydraulic control. With
tools to torque rod in the cover of regula- length. connected draw bar in a hole (a) the
tion hydraulics. sensitivity of regulation is the greatest, in
When transporting the tools, it is (c) hole the smallest.
necessary to relocate upper draw
bar to holes (c), so that overload
of kinematic system of lifting hy-
draulics, or the fall of the con-
nected machine.

84
 LINKAGES

E459 E460 X901

∗LOWER DRAW BAR WITH ∗LOWER DRAW BAR WITH CBM SECURING LOWER DRAW BARS
SLIPPING OUT END PIECES HOOKS WITH CBM HOOKS
Lower draw bar of linkages are Both lower (3) and upper (4) draw bars For extremely demanding work-
equipped with semi-automatic protruding of linkage are equipped with CBM hooks. ing conditions (aggregation with
CBM end pieces. They enable connect- The tools must be first equipped with heavy machinery on slopes or
ing of tools behind a tractor. After pro- hanging CBM balls (1) and with limiting with aggregation side faced ma-
truding securing pegs (1) slip the end draw bars set the distance between low- chines) we recommend safely
pieces out (2). Slipped-out end pieces er draw bars of linkage (3). locking the hook of lower draw
are attached to tightening pins of mount- When reversing and subsequently lifting bar by inserting a M8 screw to (S)
ed tools. a three-point linkage, its lower draw bars hole and locking the screw with a
After connecting the mounted tools, re- (3) are connected to tools and then up- pad.
lease the arms of hydraulics. By lowering per draw bar (4) of three-point linkage is
them down and reverse travel of a trac- connected by the driver from cab.
tor, endpoints (2) are slid onto draw bars When disconnecting tools, unlock the
and automatically are locked in working hooks, by control cable (2) heave upper
position by means of locking pegs (1). draw bar (4) and by lowering three-point
Always check the position of slipped-out linkage disconnect lower draw bar (3).
end pieces and locking pegs, see fig. (3).

85
NOTES

86
 WHEEL TRACK CHANGE
Page
Change of front wheels track with front drive axle..................................................... 88
Setting wheel stops with front drive axle ................................................................... 89
Setting wheel stops with front drive axle check ......................................................... 89
Front wheels toe-in.................................................................................................... 90
Wheel track toe-in in tractors with front drive axle..................................................... 91
Front drive axle fenders ............................................................................................ 91
Rear wheel track change .......................................................................................... 92

87
 WHEEL TRACK CHANGE

G503a
CHANGE OF FRONT WHEELS TRACK WITH FRONT DRIVE AXLE
Change of wheel track is done by a change of rim and disc position.

Secure the tractor against movement first, heave the axle with a hoist and support.

− Demount front wheels.

− Unscrew nuts of screws connecting a disc with rim and protrude the screws.
− Change wheel track by setting the rim to a requested position.
− Mount the screws back with pads and lock with nuts.
− Tighten nuts with a torque of 200 - 220 Nm.
− The nut of front wheels to be tightened with a torque of 270 - 300 Nm.
− After every release of a foot joint, tighten the screws to a prescribed value.
− After travelling a distance of 100 m with an unloaded tractor, retighten the joints to a prescribed torque.
− After tractor run-in tighten the joints after 3 Mh.
− After 10 Mh retest the nuts of discs and foots of wheel rim.

88
 WHEEL TRACK CHANGE

F13BN033
SETTING WHEEL STOPS WITH FRONT DRIVE AXLE
Set the stops always with any wheel track change or tire replacement with front drive axle.
Wheel stops with front drive axle must be set so that there would be a distance of at least 50 mm between front drive axle tires
and tractor with full lock and full axle swing around central pin.

SETTING WHEEL STOPS WITH FRONT DRIVE AXLE CHECK

Set full lock to one side and check that the distance between a tire and the nearest solid point on the tractor is at least 50 mm.
Check both front tires. Turn the steering to full lock to the other side and check according to point 1.
Heave one side of the front axle to the maximum swing (front axle leans against the bracket) and check according to point 1
and 2.
Hoist the other side of front axle to the maximum swing (front axle leans against the bracket) and check according to point 1
and 2.
The setting of stops (A) changes after the release of a nut (2) and unscrewing or screwing in a screw (1).
After the change in setting wheel stops with front drive axle, it is always necessary to check their setting according to
points 1 to 4.

89
WHEEL TRACK CHANGE
FRONT WHEELS TOE-IN
The value of toe-in of front wheels taken
on the rim of a tractor:
− With non-driven axle 2 to 6 mm
− With driven axle 0 to 4 mm
“S“ toe-in is given by the difference of
measured values: S = b - a.

Before checking toe-in, it is

necessary to check or adjust the
clearance in front wheels
bearings and inflate front tires to
prescribed pressure.
The measurement of toe-in is
done on wheel rims.

C505

90
 WHEEL TRACK CHANGE

C507 C508
WHEEL TRACK TOE-IN IN TRACTORS WITH FRONT DRIVE AXLE FRONT DRIVE AXLE FENDERS
Note: Tractors are in standard equipped with hydrostatic device. Are on adjustable holders which can be
− Set the wheel symmetrically with longitudinal axis of a tractor set both horizontally (by relocating
− Measure the distance between rims in the front on horizontal level of wheel axis. screws “a” to different holes) and
Mark the place of measurement. vertically (by relocating screws “b” to
− Travel forward with a tractor so that the marked places would be on horizontal level different hole) based on requested wheel
of rear wheel axis (turn by 180°) and remeasure the distance between marked tracks and the kind of used tires.
places.
− Release locking nuts of ball joint heads (2) of connecting rods of devices in
hydraulic cylinder.
− Adjust toe-in by turning the pin of ball joint (3). Do the adjusting symmetrically with
both joints to keep the same lock of wheels to both sides (do the measurement on
the sides of rims).
− Locking nuts of heads of ball joints (2), tighten with a torque of 122 - 136 N. Upper
surfaces of heads must be (1) parallel.

91
 WHEEL TRACK CHANGE

C509
REAR WHEEL TRACK CHANGE
Used tires Tire width Adjustable After the change of wheel track, tighten all the screws connecting the disc with a rim
in mm wheel track by a torque of 270 - 300 Nm and nuts of screws connecting a disc with wheel shaft
16.9-30 429 1437 - 1812
with a torque of 230 - 245 Nm.
480/70R30 479 1512 - 1812 − Tighten the screws to a prescribed value after every release of foot joint.
The standard factory wheel track is set to − After travelling a distance of 100 m with an unloaded tractor retighten the joints
1512 mm. again to a prescribed torque.
The wheel track setting of rear wheels is − After loading the tractor, tighten the joints after 3 Mh.
done by the change of rim position and − Retest the tightening of disc nuts and foots of wheel rims after 10 Mh.
disc with a heave rear part of a tractor. It − Until you travel first 100 Mh, check the disc nuts and foot of front and rear wheels
is necessary for wheels to spin freely. tightening often (at least 6 times in the first 100 Mh).
− Continue retesting the disc nuts and foot rims of front and rear wheels tightening
Before heaving do not forget to always after working every 100 Mh.
lock the tractor against
movement by making front
wheels stable!

92
 AUXILIARY BALLAST WEIGHTS
Page
∗Ballast weights in front of bonnet grill ...................................................................... 94
Valve for filling tires with liquid .................................................................................. 95
Making front wheels stable........................................................................................ 95
Filling tires with liquid procedure ............................................................................... 96
Draining liquid from tires procedure .......................................................................... 96
Anti-freezing solution for filling tires........................................................................... 97

Auxiliary ballast weights are necessary

for increasing the pressure on axles, en-
suring tractor steerability or ensuring
stability (when working with front loader,
follow producer’s guidelines).

93
 AUXILIARY BALLAST WEIGHTS

NM13N072

∗BALLAST WEIGHTS IN FRONT OF

BONNET GRILL
Ballast weights in front of bonnet
grill
Combina- Weights weight
tion of (kg)
weights(pc
s)
4+1 4x50 + 66 266

94
 AUXILIARY BALLAST WEIGHTS

NM13N104 NM13N103
VALVE FOR FILLING TIRES WITH MAKING FRONT WHEELS STABLE
LIQUID Do not forget to lock a tractor
All air locks of rear wheels are equipped against motion by making front
with a valve, which enables to fill air wheels stable before lifting the
locks with liquid when using an adapter. rear wheels!
Tubeless tires are not filled with
liquid!
Filling air locks of front tires and
double mounting of rear wheels
by liquid is not permitted!

95
 AUXILIARY BALLAST WEIGHTS

E556 E557
FILLING TIRES WITH LIQUID PROCEDURE DRAINING LIQUID FROM TIRES PROCEDURE
1. by heaving the tractor relieve tire and turn the wheel valve 1. by heaving the tractor relieve tire and turn the wheel valve
up (A) up (A)
2. let out air and unscrew the valve insertion 2. let out air and unscrew the valve insertion, turn the wheel
3. screw in the adapter for water filling, muzzle a hose for liq- valve down
uid inlet When draining the liquid, there can be decompression
4. fill the tire with a prescribed amount of liquid in the tire. Therefore turn the wheel a bit from time to
time to get the valve into upper position (B)!
5. it is possible to use head tank (B) or you can do the filling
3. remove remaining liquid after screwing in an adapter for fill-
under pressure (C)
ing with water by inlet of compressed air (C)
6. remove the hose and unscrew the adapter for water filling 4. blow the liquid out for so long that the liquid stops flowing
7. screw in the insertion of a valve and inflate the tire to pre- out through the tube of air adapter
scribed pressure (D) 5. unscrew the adapter for water filling
8. after inflating screw in a protective cap on the valve 6. screw back in the air part of valve and inflate the tire to pre-
9. fill the second tire in the same way scribed pressure (D)
7. screw in a protective cap to a valve
8. drain the liquid similarly also from the second tire

96
 AUXILIARY BALLAST WEIGHTS
ANTI-FREEZING SOLUTION FOR FILLING TIRES
Water for solu- Calcium chloride Calcium hydrox- Solution density Chill point ap- Total volume Auxiliary
tion preparation CaCl2 ide with 20°C proximately weights

(l) (kg) (kg) (°C) (l) (kg)

45 11,8 0,21 1,13 -18 50 57
45 13,9 0,23 1,18 -25 50 59
45 15,4 0,25 1,21 -30 50 61
Solution preparation:
1. Calcium chloride (CaCl2) is added to water not the other way round!
2. The solution is not hazardous but it needs to be handled with care. Wash spilled drops with clean water.
3. Allow the solution to cool off before filling. Keep the prescribe amount of calcium hydroxide.
4. The solution must not come in touch with metallic parts and electric installation” The solution is nor harmful to the valve of air
lock.
5. Anti-freezing solution prepared in the given composition must not be used in cooling system!
6. Dispose of anti-freezing solutions as of special waste after draining!

97
NOTES

98
 ELECTRICAL INSTALLATION
Page
Basic service information ........................................................................................ 100
Accumulator battery ................................................................................................ 100
battery disconnector ................................................................................................ 101
accumulator battery maintenance ........................................................................... 102
Alternator................................................................................................................. 103
Alternator maintenance ........................................................................................... 103
Fuse box ................................................................................................................. 104
Lights adjustment in tractor´s grill check ................................................................. 105
Lights adjustment in tractor´s grill............................................................................ 105
Lights adjustment in cab roof check ........................................................................ 106

There must not be any additional

interventions to the electric instal-
lation of the tractor (connecting
other electric devices) from the
reason of its possible overload!
When repairing electric installa-
tion, pay greater care especially
when manipulating with accumula-
tor batteries, to avoid contact of
skin or clothing with electrolyte.
99
 ELECTRICAL INSTALLATION

NM13N076
BASIC SERVICE INFORMATION
Accumulator battery must be always connected by a "minus" pole to earth electrode ACCUMULATOR BATTERY
and "plus" pole connected with alternator. Reversely connected accumulator battery Accumulator battery is located in a box
will destroy the whole of semiconductor device of alternator. When using auxiliary ac- on the left side of the tractor.
cumulator battery for starting the tractor, do not forget to connect "plus" to "plus" and After unscrewing the screw marked with
"minus" to "minus". If replacement of a part of charging circuit is done, disconnect a an arrow, lid of box of accumulator bat-
battery from the earth electrode of the tractor by battery disconnector (-). Any inciden- tery can be opened together with steps.
tal short circuits on clamps are excluded.

With any manipulation or starter repair, it is necessary to disconnect the mi-

nus pole of the battery and to shift all the levers including PTO shaft shifting
lever to neutral position so as to prevent spontaneous start and endangering
the life of a repairman.
It is forbidden to start by short circuiting the clamps of starter.
Start tractor only from driver’s seat.

100
 ELECTRICAL INSTALLATION

NM13N77

BATTERY DISCONNECTOR
Accumulator battery is located under the
cab on the right side.
Battery disconnector (1) is located on the
right side of the tractor in front of the cab.
a - Battery connected
b - Battery disconnected
If the tractor is put aside for a
longer period of time, it is neces-
sary to recharge the accumulator
at least once in three months be-
cause of the battery self dis-
charge. When putting tractor
aside we recommend you to dis-
connect the accumulator by
means of battery disconnector.

101
 ELECTRICAL INSTALLATION

E604
ACCUMULATOR BATTERY MAINTENANCE
Keep accumulator battery clean, well attached to the vehicle. The attachment device must not however deform the accumulator
vessel. The level of electrolyte must be under the minimum level (mark line) marked on a vessel with polypropylene batteries.
Do the refill only with distilled water!
1. First study the instructions manual enclosed to the battery when working with accumulator!
2. When working with accumulator, protect your eyes with either goggles or a protective shield!
3. Electrolyte is an alkali, handle it therefore with due care! Rinse the skin stained with electrolyte and neutralize with soap and
water, just like the stained clothing. Keep away from children!
4. When recharging from electrolyte hydrogen is released on electrodes, which makes an explosive mixture when mixed with air.
It is therefore forbidden to manipulate with open fire near accumulator!
5. An explosion may be caused by a spark incurring after disconnection or release of clamp with engaged charging circuit!
6. Discarded accumulator is environmentally hazardous waste – when buying a new accumulator, hand the old one over to a
seller who will dispose of it free of charge.
7. Insufficiently charged battery can freeze in winter

102
 ELECTRICAL INSTALLATION

E605

ALTERNATOR ALTERNATOR MAINTENANCE

It is accessible after hinging the bonnet When washing and cleaning tractor protect alternator prior to penetration of
away. Charging check is indicated by a water or oil!
red control on the compound dashboard You must not disconnect alternator from accumulator during operation!
device, which must go out after starting. Alternator must not ever be put in operation with a disconnected conductor
When repairing tractor by electric from of clamp “+B” and connected clamp “+D“. Such condition when increas-
welding, all the conductors must ing the revolutions may cause an exceptionally high alternator voltage which
be disconnected alternator. Pro- would damage semiconductors!
tect conductor "+B" against short Never short circuit any clamp of alternator in operation!
circuit. Alternator must not be over activated. There is a risk of semiconductors dam-
age with this intervention!
Mind the perfect electrical joint on connecting clamps and on perfect alterna-
tor grounding!
Alternator must not be overpoled not even for a short time!

103
 ELECTRICAL INSTALLATION
Placement of fuses in fuse Pos. Size of Protected system
box fuses
1 15A Direction lights
2 15A Brake lights
3 20A Ignition relay, dashboard feeding,
start blocking, recirculation
4 15A Headlights with control
5 15A Left side lights
6 15A Right side lights
7 10A Right dimmed headlight
8 10A Left dimmed headlight
9 15A Radio, washer, beacon, cab lighting
10 15A Working headlights in roof
11 15A Heating
NM13N078 12 20A Air condition, front and rear washer,
FUSE BOX 13 80A Ignition
Is accessible after removing the left lid of
the steering bracket. Lid can be removed
after unscrewing the screw (1).
Fuses (2) are knife-blade-contact and
with replacement it is necessary to keep
the prescribed value of the fuse. With
repeated interruption, search for the NM13N079
nearest service.

104
 ELECTRICAL INSTALLATION

E609 NM13N106
LIGHTS ADJUSTMENT IN TRACTOR´S GRILL CHECK LIGHTS ADJUSTMENT IN TRACTOR´S
When checking on test wall, the tractor must stand on a horizontal surface and tires GRILL
must be inflated to prescribed pressure. Basic vertical adjustment is 3.5 % with ser- Adjustment is done simultaneously with
vice weight of the tractor. In horizontal direction, the beams of lights must be parallel all screws for both vertical and horizontal
with the longitudinal axis of tractor’s symmetry. direction of a beam. In adjusted state all
I - Distance of test wall from a headlight (5 m) the springs of unadjusted screws must
h - Height of the centre of headlight above the road be preloaded! Each headlight is adjusted
Δh - Headlight slope (-3.5 %) of the distance of test wall = 17.5 cm separately. Bulb replacement is done by
α - Lifting the line of asymmetric light (15%) removing it from the back side of reflec-
tor.

105
 ELECTRICAL INSTALLATION

NM13N105
LIGHTS ADJUSTMENT IN CAB ROOF CHECK
No point of a lit surface lying on the level of road to the left from longitudinal vertical
surface passing through the centre of headlight must be further from the front line of
the tractor than 30 m.
In horizontal direction, headlight beams must be parallel with longitudinal axis of trac-
tor symmetry.
Perform the lights adjustment check with service weight of the tractor. Front roof
headlights can be used for operation on roads only in such cases when a front
mounted tool is hanged on the tractor or a device covering main headlights (in trac-
tor’s grill).

106
MAINTENANCE OF THE TRACTOR
Page
Steps taken daily always before starting the works ................................................. 108
Steps taken after every 100 hours of operation....................................................... 108
Steps taken after every 500 hours of operation....................................................... 109
Steps taken beyond 500 Mth interval ...................................................................... 109
Replacing fillings and filters ..................................................................................... 110
Used operation liquids and fillings - amount ............................................................ 111
Oils for four-roller forced induction Zetor engines ................................................... 112
Oils of tractors transmission gears .......................................................................... 112
Oils to front drive axle ............................................................................................. 113
Oils to hydrostatic steering for tractors .................................................................... 113
Plastic lubricant for tractor ....................................................................................... 114
Fluid to tractor cooling system................................................................................. 115
Fuel ......................................................................................................................... 115
Tractor greasing plan .............................................................................................. 116
Front drive axle ....................................................................................................... 116
Three-point linkage and rear semi-axes bearings ................................................... 117

107
 MAINTENANCE OF THE TRACTOR
STEPS TAKEN DAILY ALWAYS BEFORE STARTING THE WORKS
Before starting the engine After starting the engine
Amount of oil in the engine check Engine greasing function check (control)
Amount of coolant and joint tightness in the cooling system Charging function check (control)
check Steering function check (control)
Checking the amount of oil in the hydrostatic steering circuit Steering circuit function and tightness check
tank Efficiency and function of tractor brakes check
Checking the amount of oil in gear box and final drive housing Efficiency and function of trailer or semi-trailer brakes check
Air cleaner indicator contamination check
Air pressure in all tires check
Wheels tightening check
Auxiliary and connecting tools check

STEPS TAKEN AFTER EVERY 100 HOURS OF OPERATION

Greasing the tractor based on a greasing plan
Cleaning radiator discs by air pressure
Dry air filter maintenance (maintain according to pollution indicator signalization)
Checking the amount of oil in the gear box and final drive housing
Checking the amount of oil in reducers and front drive axle box
Draining condensate from air collector

108
 MAINTENANCE OF THE TRACTOR
STEPS TAKEN AFTER EVERY 500 HOURS OF OPERATION
Cogged belt tension check
Hydrostatic steering system clearance check.
Pivot of front drive axle clearance check.
Clutch and brake pedals adjustment clearance check
Manual clutch function check
Brake function for trailer check
Cleaning and greasing accumulator battery clamps by a thin layer of grease.
Air pressure system tightness and function check
Driver’s seat function check, greasing moving parts with grease

STEPS TAKEN BEYOND 500 MTH INTERVAL

with a new tractor or a tractor after gen-
eral repair

100

500

2 000

2 500
1000

1500
Meter of Mth state subsequently after....hours of operation

Inspection and adjustment of valve

o o 2000
clearance
Opening pressure of injectors and the
o 2000
function of injection nozzles check
Hydrostatic steering hoses replacement every 3500 Mth or every 4 years
Foot and manual brake function check o o o o o o 500
Front wheels toe-in o 2000

109
 MAINTENANCE OF THE TRACTOR
REPLACING FILLINGS AND FILTERS
with a new tractor or a
tractor after general repair

100

500

1 000

1 500

2 000
subsequently after....hours of
Meter of Mth state
operation

Motor oil replacement o o o o o 500

Motor oil filter element replacement o o o o o 500
Fuel filter element replacement o o o o 500
Air filter element replacement o o 1000
Air filter safety element replacement o 2000
every 1000 Mth or every 2
Heating filter element replacement
years
Coolant replacement every 2 years
Oil in gear box and final house driving replacement o 1500
Sucking filter replacement (hydraulic pump sucking filter replace-
o o o o o 500
ment)
Replacing oil in the front drive axle box o o o 1000
Replacing oil in reducers of front drive axle o o o 1000
Hydrostatic steering oil replacement o 1500
Hydrostatic steering filter element replacement o 1500

110
 MAINTENANCE OF THE TRACTOR
USED OPERATION LIQUIDS AND FILLINGS - AMOUNT
Name of location Amount in litres
Coolant
Coolant with a cab 14.4
Oil in engine 10
Oil to hydrostatic steering 2.6
Oil to front drive axle box 5.5
Oil to planet reducers of front drive axle 2x0.6
Oil to gear box and final drive housing 35
Fuel 80

111
 MAINTENANCE OF THE TRACTOR
OILS FOR FOUR-ROLLER FORCED INDUCTION ZETOR ENGINES
Oil labelling Viscosity class Performance class
SAE API
Shell Rimula R3 X 15W-40 API CH-4
MOL Dynamic Transit 15W-40 API CI-4
MOL Dynamic Turbo Diesel 15W-40 API CF-4
ORLEN OIL Diesel(2)HPDO 15W-40 API CG-4
ÖMV truck LD 15W-40 API CI-4
ARAL Mega Turboral 10W-40 API CH-4
Fuchs Titan Truck 15W-40 API CG-4
MOGUL DIESEL DTT PLUS 10W-40 API CF
MOGUL DIESEL DT 15W-40 API CG-4/SL
MOGUL DIESEL DTT EXTRA 15W-40 API CI-4/SL
TRYSK SUPER (M7 ADS III) 15W-40 API CF-4
TRYSK SUPER TURBO (M7 ADS IV) 15W-40 API CG-4/SL

OILS OF TRACTORS TRANSMISSION GEARS

Manufacturer Oil labelling Viscosity class Performance
SAE class API
Paramo Traktol STOU 10W - 30 GL-4
Aral Super Traktoral 10W - 30 GL-4
ÖMV Austrotrac 10W - 30 GL -4
Fuchs AGRIFARM STOU 10W-30 MC 10W - 30 GL-4

112
 MAINTENANCE OF THE TRACTOR
OILS TO FRONT DRIVE AXLE
Manufacturer Oil labelling Viscosity class Performance
SAE class API
Agip Rotra Multi THT 80W GL-4
Aral Fluid HGS 80W GL-4
Esso Torque Fluid 62 80W GL-4
Fuchs Titan Supergear 80W/90 GL-4/GL-5
Titan Hydramot 1030MC 10W/30 GL-4
Titan Renep 8090MC 80W/90 GL-4/GL-5
ÖMV Gear Oil LS 85W/90 GL-5
Shell Spirax AX 80W/90 GL-5
MOL Hykomol K 80W-90 80W - 90 GL-5
ORLEN OIL Platinum Gear 80W-90 80W - 90 GL-5

OILS TO HYDROSTATIC STEERING FOR TRACTORS

Manufacturer Oil labelling Classification

Aral Vitam DE 32 HLP DIN 51524

Fuchs RENOLIND10VG32 HLP DIN 51524-2
ÖMV Hyd HLP 32 HLP DIN 51524
Shell TELLUS DO 32 HLP DIN 51524
PARAMO MOGUL H-LPD 32 HLP DIN 51524
MOGUL HM 32 HLP DIN 51524
MOL Hydro HV 32 HVLP DIN 51524-3
ORLEN OIL Hydrol L-HM 32 HLP DIN 51524-2
Hydrol L-HM 46 HLP DIN 51524-2

113
 MAINTENANCE OF THE TRACTOR
PLASTIC LUBRICANT FOR TRACTOR
Type Classification

MOGUL LA 2 ISO 6743/9 CCEB 2/3, ISO - L - XBCEA 2

MOGUL LV 2M ISO 6743/9 CCEB 2/3
ÖMV signum DIN 51825-K 2 C-30
Shell retinax HD2 DIN 51825 KP 2 K-20
MOL Liton LT 2EP
ORLEN OIL Liten® Premium ŁT-4 EP2

114
 MAINTENANCE OF THE TRACTOR
FLUID TO TRACTOR COOLING SYSTEM
FRIDEX - STABIL, FRIDIOL 91 or FRICOFIN S and demineralised water in
1:1.5 rate (replenish the mixture in this rate).
Antifreezer for replacement abroad must include anti-corrosive component,
protecting all materials (including rubber and sealing heads) of engine cool-
ing system.
BEWARE!
1. Water without antifreezer must not be used for cooling in tractors!
2. After two years of operation, replace coolant. FRIDEX - STABIL and
FRIDIOL 91 can be mutually mixed.
3. Mixability of fluids from other manufacturers is not tested!

FUEL
Summer diesel for the period from April 1 to October 31
Winter diesel for the period of November 1 to March 31
Note: Applicable types of fuel must be used abroad
Mixed Fuel Natural Diesel (bio diesel).
Note: Tractor operation on bioFuel requires equipping the fuel system with
REP hoses. Using bio fuels increases consumption, decreases perfor-
mance by approximately 5%, requires oil replacement in engine after
200 Mh. It also has an aggressive effect on polished parts.

115
 MAINTENANCE OF THE TRACTOR
TRACTOR GREASING PLAN
FRONT DRIVE AXLE
Position Name Number of
number greasing points
1 Pivot pins 4
2 Spigot shaft 2
3 Cardan shaft joint 2

116
 MAINTENANCE OF THE TRACTOR
THREE-POINT LINKAGE AND REAR SEMI-AXES
BEARINGS
Number Name Number of
of posi- greasing
tion points
1 Rear semi-axes bearings 2
2 Lifting rod 2
3 Upper draw bar bracket 3

NM13N073

117
NOTES

118
 MAINTENANCE INSTRUCTIONS
Page
Front bonnet opening .............................................................................................. 120
Checking oil levels in engine ................................................................................... 120
Draining oil from engine .......................................................................................... 120
Replacing full-continuous motor oil filter .................................................................. 121
Pouring oil to engine ............................................................................................... 121
Fuel filter element replacement ............................................................................... 122
Fuel system venting ................................................................................................ 122
Contamination indicator function ............................................................................. 123
Maintenance instruction of dry air filter .................................................................... 124
Main air filter element regeneration ......................................................................... 124
Replacing dry filter locking element ......................................................................... 124
Back assembly of air filter elements ........................................................................ 125
Checking amount of oil in hydrostatic steering tank ................................................ 126
Replacing oil and hydrostatic steering filter element ............................................... 126
Venting hydraulic circuit of hydrostatic steering ............................................... 127
Replacing the hoses of hydrostatic steering ............................................................ 128
Coolant replacement ............................................................................................... 129
Checking the oil in gear box, final drive housing and rear axle .................................... 130
Replacing oil filter element of hydraulic pump ......................................................... 130
Most of the works of planned technical Gear system drain plug ........................................................................................... 130
maintenance can be done by the driver Oil replacement in gear system ............................................................................... 131
or user of the tractor himself/herself. If Filling, controlling and draining hole of oil of front drive axle ................................... 131
you do not have the corresponding tech- Heating filtration element ........................................................................................ 132
nical equipment, turn to a specialized Air-condition filtration elements ............................................................................... 132
garage for the more difficult steps. Filtration elements cleaning..................................................................................... 132
All the works related to the clean- Draining the condensate from air collector ................................................................. 133
ing, greasing and adjusting the Air system tightness inspection ............................................................................... 133
tractor or articulated machines can Air condition maintenance ....................................................................................... 133
be done only with tractor and other Maintenance and treatment of tires ......................................................................... 134
moving parts at standstill, apart Tire inflation............................................................................................................. 134
from the brake, charging and hy- Detaching tractor ..................................................................................................... 134
draulic controls.

119
 MAINTENANCE INSTRUCTIONS

NM13N107 X903 E703

FRONT BONNET OPENING CHECKING OIL LEVELS IN ENGINE DRAINING OIL FROM ENGINE
Opening the bonnet: Check daily before starting the operation 1. unscrew the drain plug (1), best im-
Unlock the bonnet by pulling the draw with the tractor standing horizontally. mediately after terminating the drive
bar (1) in the direction of an arrow, grip Engine oil dipstick (1) and filling hole (2) or after heating the engine to work-
where the arrows are and heave. are placed on the rights side of the en- ing temperature
The bonnet is locked in the heaved gine. Unscrew the dipstick (1), wipe off 2. drain oil
position by a gas-fluid prop. with a cloth and screw back in. When 3. clean the drain plug
Closing the bonnet: you unscrew the dipstick again, the level 4. screw the drain plug (1) back in
Pull the bonnet by means of a belt, grip must not drop below the bottom gauge. If
where the arrows are and snap in the necessary, refill oil by a filling hole (2).
downward direction so that the lock of
bonnet snaps down.
If you close the front bonnet
prudce, there can be the damage
of headlights bubs placed in the
front bonnet.

120
 MAINTENANCE INSTRUCTIONS

E704 E705
REPLACING FULL-CONTINUOUS POURING OIL TO ENGINE
MOTOR OIL FILTER Pour the set amount of motor oil engine
To be done with every oil replacement in by filling hole (2), start the engine and al-
engine. Before you screw in a new filter, low it to run for 2 - 3 minutes with engine
clean the sealing surface of the body (1) revolutions of 750 - 800.
and the filter (2). Grease rubber sealing After stopping the engine and settling the
with oil, with which you will fill the engine level recheck the amount of oil with a
and tighten the filter with your hand. After dipstick (1) and check the tightness of fil-
the sealing seats on the sealing of the ter, drain plug (3) and other joints.
block, tighten the filter for a 3/4 to 1 and
1/4 of a revolution. Check the tightness
again after starting the engine.

121
 MAINTENANCE INSTRUCTIONS

E706 E707 E708

FUEL FILTER ELEMENT FUEL SYSTEM VENTING 4. vent injection pump in a similar pro-
REPLACEMENT Before you vent, place a suitable cedure
Before you replace fuel filter, vessel under the engine to catch 5. vent with a screw (3) placed on the
place a suitable vessel under the dripping fuel from the filter and in- body of the pump
engine for catching dripping fuel jection pump.
from the filter. 1. by several heaves of a manual con-
1. release the nut (1) trol of feeding pump (1) pressurize
2. unscrew bulb (2) the fuel system
3. clean the bulb and replace the filter 2. release the screw of branch pipe of
element fuel feeder to filter (2) and allow the
4. check proper positioning of bulb seal- fume to escape
ing 3. tighten the screw (2) and repeat the
5. do the bulb back assembly procedure to the moment when a
6. do fuel system venting clear fuel starts flowing smoothly
from the filter.

122
 MAINTENANCE INSTRUCTIONS

G710b G711
DRY AIR FILTER MAINTENANCE - CONTAMINATION INDICATOR
POLLUTION INDICATOR FUNCTION
Filter maintenance needs to be done af- The state of air filter pollution is signal-
ter pollution signalization. ized by the position of driver (1) in indica-
The indicator is accessible after opening tor window. If the driver (1) reaches a red
the front bonnet of the tractor. It is placed box with a label service (2) it is neces-
on the left side of air cleaner near bend sary to do dry air filter maintenance.
of sucking pipeline. After completing dry air filter
maintenance, ensure repeated
proper function of pollution indi-
cator.
Press the cap on the body of the indica-
tor (3) in the direction of an arrow; you
will unblock the driver (1) signalizing pol-
lution mechanically, it will return to initial
position. That is how the activity of indi-
cator is renewed.

123
 MAINTENANCE INSTRUCTIONS

X712 G713 QQQ_G714

MAINTENANCE INSTRUCTION OF MAIN AIR FILTER ELEMENT REPLACING DRY FILTER LOCKING
DRY AIR FILTER REGENERATION ELEMENT
Do air filter maintenance accordingly:  pull to remove the main dry filter ele-  remove dry filter locking element (3)
1. heave the front bonnet ment (2) with a pull
2. release the clamps of air filter lid If main element is not damaged (there Locking element cannot be re-
(marked with arrows) must not be dust on the internal side of generated. It must be always re-
3. remove air filter lid (1) the element) regenerate by blowing with placed in these cases:
compressed air from the internal side of - when damaging main element
the element. - after 5 maintenances of air filter
Main element can be regenerated this - at least once in two years
way 3 times maximum. Element must be
replaced once a year.

124
 MAINTENANCE INSTRUCTIONS

G715
BACK ASSEMBLY OF AIR FILTER
ELEMENTS
Do back assembly of air filter elements
reversely.

Mind the following with back assembly:

- contact surfaces cleanliness
- elements must not be deformed with
assembly and must not vibrate after
assembly
- after closing the filter with a ,id a per-
fect tightness of the whole filter must
be ensured
- after completing the maintenance of
dry air filter, secure proper function of
pollution indicator

125
 MAINTENANCE INSTRUCTIONS

E719 G750 E721

CHECKING AMOUNT OF OIL IN REPLACING OIL AND HYDROSTATIC sels for used oil under working roller
HYDROSTATIC STEERING TANK STEERING FILTER ELEMENT hoses and waste pipeline)
Inspect daily before starting the opera- 1. place a suitable vessel under the 11. start the engine and with idle run
tion with tractor standing horizontally. Lift hydrostatic steering tank (max. 10 seconds) turn the steering
off the bonnet. Unscrew dipstick, wipe wheel 2-3 times to both sides so that
2. unscrew drain screw at the bottom of
off with a cloth and screw back in. After you pushed oil from control unit and
the tank
repeated unscrewing of the gauge, the pipeline
3. drain the oil
level must not drop below bottom gauge 12. secure the tractor against movement
4. unscrew the nut of tank cap
line. Replenish the oil when necessary and lift front drive axle
5. demount the cap of hydrostatic steer-
after demounting the cap of the tank. 13. place a vessel for oil under
ing tank
the working roller and by turn-
6. remove and replace filter element
ing the wheels (manually)
7. set the lid of the tank back in
push the oil from working roll-
8. lock its position with a nut
er
9. screw drain screw back in
14. do the back assembly of all discon-
10. disconnect both hoses from
nected joints
working roller and waste pipe-
15. fill the tank with oil and vent hydro-
line from the tank (place ves-
static steering circuit.

126
 MAINTENANCE INSTRUCTIONS

E722 E723
VENTING HYDRAULIC CIRCUIT OF HYDROSTATIC STEERING Monitor oil level in the tank with
1. secure the tractor against movement and lift the front axle all hydrostatic steering venting
2. start the engine and allow it to run for approximately 1 minute in idle run steps to prevent air sucking to the
3. turn the steering wheel several times to both sides with idle run system of steering.
4. with maximum engine revolutions, turn the steering wheel 3 times alternately slow-
ly and quickly to both sides to restricting wheel stop.
5. stop the engine
6. after completing the venting check or replenish the oil level to control gauge line.
Check the tightness of all joints and hydraulic circuit guide-ways of hydrostatic
steering.
7. lower the tractor down to front wheels.

127
 MAINTENANCE INSTRUCTIONS

G719
REPLACING THE HOSES OF HYDROSTATIC STEERING
Hoses need to be replaced four years from the date of their manufacture (date is giv-
en on their surface) or after working 3 500 hours with tractor, or right after learning
the symptoms of their damage (hose, local swelling, penetration of working medium
around endpoints and hose surface, wrapping damage by mechanical smear to a
metallic body, damage to external buckle braid with low-pressure hoses).
If a pump gets damaged or if the engine is at standstill, steerability is ob-
served, but the force on the steering wheel increases. It is possible to get to
the nearest place where repairs can be done with lowered speed.
The steering wheel must not be held in the positions of extreme wheel locks
for long (maximum time is 20 sec.), otherwise there is excessive oil heating in
hydrostatic steering circuit.

128
 MAINTENANCE INSTRUCTIONS

NM13N065 E726 G716

COOLANT REPLACEMENT 2. drain coolant from radiator (C). Drain- 5. fill the cooling system with antifreezer
Observe the following procedure: ing screw is accessible after lifting the 6. start the engine and allow it to run for
1. open valve of heating (A) and release bonnet 1 minute approximately
safety plug on equalizing tank (B) 3. drain coolant from the block of engine 7. replenish antifreezer in equalizing
(D). Drain valve is accessible after lift- tank to the upper gauge line labelled
ing the bonnet as MAX
4. after draining the coolant, close the 8. close the equalizing tank with a safety
screw and valve (leave heating valve plug.
open) 9. after heating the engine and opening
thermostat allow the coolant to cool
off again and check or replenish the
coolant.
Replace antifreezer every two years.

129
 MAINTENANCE INSTRUCTIONS

NM13N066 NM13N067 NM13N068

CHECKING THE OIL IN GEAR BOX, REPLACING OIL FILTER ELEMENT GEAR SYSTEM DRAIN PLUG
FINAL DRIVE HOUSING AND REAR OF HYDRAULIC PUMP Gear system drain plug is placed on the
AXLE Oil filter (1) is placed on the left side in box of front axle drive.
Gear system has a common oil filling. front of fuel tank.
The state of oil is checked with a dipstick Before replacing filter element
(a), which is placed in the rear part of fi- place a suitable vessel under the
nal drive housing. Dipstick hole serves tractor to catch dripping oil.
as filling
1. unscrew filtration element (1)
Do the inspection with a tractor at 2. replace filtration element
standstill. Oil must be in the 3. grease rubber sealant of filtration el-
range (A) of dipstick. ement with oil and tighten the filtra-
tion element with your hand. After
the sealant is seated, tighten the fil-
tration element by 3/4 to 1 and 1/4 of
a revolution.
4. check oil level in the gear box, re-
plenish when necessary
130
 MAINTENANCE INSTRUCTIONS

NM13N069 E733 G731

OIL REPLACEMENT IN GEAR FILLING, CONTROLLING AND FILLING, CONTROLLING AND
SYSTEM DRAINING HOLE OF OIL OF FRONT DRAINING HOLE OF OIL OF FRONT
1. unscrew drain plug (1), best imme- DRIVE AXLE WHEELS REDUCERS
diately after ending a drive or after 1 - final drive housing oil draining hole Inspection, filling and draining oil is done
heating oil to working temperature 2 - filling and controlling hole of final by a one hole after turning reducer ac-
2. drain oil (for easing draining, remove drive housing oil (after unscrewing cording to figure.
gauge line (2)). controlling screw, the level of oil must 1. amount of oil inspection – hole in the
3. clean drain plug (1) and screw it reach bottom brim of checking hole). horizontal axis of a reducer
back in (after unscrewing control screw the
4. replace filtration element (3) level of oil must reach the brim of
5. pour new oil through dipstick hole checking hole)
(2) 2. filling oil – hole at the top
6. start the engine and allow it to run 3. draining hole – hole at the bottom
for approximately 3 minutes in idle
run.
7. after stopping the engine and when
the level settles, check the amount
of oil with a gauge (1).

131
 MAINTENANCE INSTRUCTIONS

NM13N110 NM13N109 NM13N110

HEATING FILTRATION ELEMENT AIR-CONDITION FILTRATION FILTRATION ELEMENTS CLEANING
Is placed under the bonnet in front of the ELEMENTS Regenerate filtration elements of the cab
cab Are placed in the rear overhang of cab depending on the degree of clogging:
After opening the bonnet, it is necessary roof.  by dusting
to unscrew the screws (2) and remove It is necessary to unscrew the screws (2)  by blowing with compressed air
heating filtration element (1). and remove air-condition filtration ele- Check clogging daily. Replace strongly
ments (1). polluted filters.
Tractor’s safety cab is not equipped
with special filters for air sucked into
the cab.
It does not protect operators
against the effects of aerosols and
other harmful substances!

132
 MAINTENANCE INSTRUCTIONS

NM13N074 NM13N075 E740

DRAINING THE CONDENSATE FROM AIR SYSTEM TIGHTNESS AIR CONDITION MAINTENANCE
AIR COLLECTOR INSPECTION The main element of air condition
Air collector is placed on the right side of  fill air collector to the maximum pres- system maintenance is cleaning
the tractor under the cab. sure (600  20 kPa) air condition condenser (is placed
Draining the condensate from air collector  there must not be drop in pressure for in front of engine radiator).
to be done by deviation of venting valve more than 10kPa in 10 minutes with Clogged air condition condenser
by pulling a ring. engine at standstill decreases not only the efficiency
Valve is located on the bottom part of air Before driving with a trailer or a of cooling system but also the ef-
collector. semi-trailer, do the inspection ficiency of engine cooling.
daily! Open the bonnet, demount the nut (1)
With pressure drop in brake sys- and protrude the radiator to the side and
tem under 450  30 kPa, a warn- blow with compressed air or wash with
ing control lights up on the dash- pressed water (against the direction of
board! tractor drive).
Slide the radiator back in and attach
properly. Mind proper conducting of hos-
es to oil radiator.

133
 MAINTENANCE INSTRUCTIONS

NM13N071 E743
MAINTENANCE AND TREATMENT OF TIRES DETACHING TRACTOR
Regularly inspect the outer surface of a tire and inspect that there are no defects in When putting the tractor out of operation
side or above the base part of rollers and that body is not damaged. for a longer period of time (warehous-
ing), support the tractor and lower the
Remove tires which have defects from further use. pressure in tires to a minimum (wheels
must not touch the ground).
TIRE INFLATION
Basic values of recommended inflation are given in chapter "Main technical parame-
ters”. Check pressure regularly before driving, if tires are cold. Use pressure regula-
tor for inflation (A), which fulfils the function of pressure equalizer, tire filler and lock-
ing valve. Screw a hose for tire inflation. Screw the hose to the end of coil so that
back valve will be compressed. If there is maximum pressure in air collector, a tire
cannot be inflated. In such case it is necessary to first lower the pressure by a valve
for draining condensate placed in the bottom part of air collector (B).

134
 ADJUSTMENT
Page
Cogged belt tension ................................................................................................ 136
Cogged belt tension of air-condition compressor .................................................. 136
Tightening heads of rollers ...................................................................................... 136
Adjusting valve clearance ....................................................................................... 136
PTO shaft clutch control lever adjustment .................................................................. 137
Adjusting clutch pedal ............................................................................................. 138

The majority of following works requires

certain experience and more demanding
service and diagnostic equipment. We
therefore recommend these works to be
entrusted to expert or authorized work-
shops.

135
 ADJUSTMENT

FH12N085 E752 E753

COGGED BELT TENSION TIGHTENING HEADS OF ROLLERS ADJUSTING VALVE CLEARANCE
With proper cogged belt tension the Tightening heads of engine rollers is Adjusting valve clearance is done with a
bending of belt must be 5.5 mm with done with a cold engine in prescribed or- cold engine. Proper valve clearance with
force effect of 25 N on a single belt. der. suction and exhaust valves is
Perform cogged belt tension to pre- Tightening torque 160 - 180 Nm 0.25±0.05 mm.
scribed value after releasing tightening Valve clearance 0,25 ± 0,05 mm Alternating the movement of balance
screws (1, 2). arms:
COGGED BELT TENSION OF AIR-
CONDITION COMPRESSOR Alternating roller Roller valve is
With proper cogged belt tension, bending balance arms adjusted
of belt must be 7.5 mm with force effect 1. 4.
of 25 N on a belt. 3. 2.
Perform cogged belt tension to pre- 4. 1.
scribed value after releasing tightening 2. 3.
screws of air-condition compressor.

136
ADJUSTMENT
PTO SHAFT CLUTCH CONTROL LEVER
ADJUSTMENT
Free run adjustment of PTO shaft clutch
control lever (a) is done by changing the
length of control Bowden.
After releasing the locking nut (1) set the
length of Bowden by turning the nut (2).
After setting the length of Bowden, tight-
en the locking nut (1).
With adjustment hold the Bowden bolt
(3), to prevent its turning together with
adjustment nut (2).

Free run of PTO shaft clutch control

lever (a) must be 25 to 35 mm.

The track of lever between the lower lev-

er position and the point when the con-
trol force on lever increases is the free
run of PTO shaft clutch control lever.

NM13N114

137
ADJUSTMENT
ADJUSTING CLUTCH PEDAL
Adjusting free run of clutch pedal (a) is done by changing the
length of Bowden (1).

Clutch pedal free run (a) must be 25 – 35 mm.

Free run of clutch pedal represents the track of pedal between

the upper position of clutch pedal and the point when control
force on the clutch pedal increases.

NM13N113

138
MAIN TECHNICAL PARAMETERS
Page
Main tractor´s parameters (mm).............................................................................. 140
Tractor´s weight ...................................................................................................... 140
Technical data of engines ....................................................................................... 141
Permitted maximum load of front axle (kg).............................................................. 143
Permitted maximum load of rear axle (kg)............................................................... 143
Permitted maximum weight of set “tractor + mounted machine” (kg) ...................... 144
Front tires steerability.............................................................................................. 145
bearing capacity of rear tires ................................................................................... 145
Hydraulic system..................................................................................................... 146
Tractor´s speed in km/h with engine nominal revolutions........................................ 147
Performance on rear PTO shaft .............................................................................. 148
Dependent PTO shaft revolutions with nominal engine revolutions ........................ 148
Independent PTO shaft revolutions......................................................................... 148
Clearance-circle and turning circle diameter ........................................................... 149

139
 MAIN TECHNICAL PARAMETERS
MAIN TRACTOR´S PARAMETERS (mm)
Note
Turning-circle diameter length
- without ballast weights in front of cab’s grill 3 930
- with ballast weight in front of cab’s grill 4 230
Width over rear fenders 1 840
Height to the mouth of exhaust pipe 2 578
Height of tractor to upper cab’s rim 2 624
Clearance height under the girder of front
axle 393
Height of nozzle of multistage suspension
linkage in its topmost position (the centre of
nozzle ) 890/840/790/690
Height of swinging draw bar (on internal
bottom fork surface) 418/455
Rear PTO shaft height 725
Wheel base 2 200

TRACTOR´S WEIGHT
Tractor’s weight (kg) 3090

140
 MAIN TECHNICAL PARAMETERS
TECHNICAL DATA OF ENGINES
Type of tractor Major 80
Type of engine 1105
Kind of engine injection, four-stroke with direct fuel injection, turbocharged engine
Design of engine serial, upright, water-cooled
Number of rollers 4
Volume of rollers cm3 4156
Drilling x heave mm 105x120
Nominal revolutions min-1 2200
Injection sequence 1-3-4-2
Compression ratio 17
Max. overrun speed min-1 2460
Idle run revolutions min-1 800±25
Net output with nominal revolutions
kW 53
of 2 200 rpm (EC 24)
Specific fuel consumption
g.kW.h 260
2 200 rpm
Max. torque (Mt) 1480 rpm Nm 310
Elevation Mt % 35
Net output of1 480 rpm kW 48
Specific fuel consumption with
g.kW.h 222
max. Mt 1 480 rpm
Engine greasing Compression with gear pump
Maximum oil consumption after g.kW-
1 -1 0.7
100 Mh of engine run-in .h
Oil pressure with nominal engine
revolutions and oil temperature of MPa 0.2 – 0.5
80°C
Minimum oil pressure with engine
revolutions of 750 min-1 and oil MPa 0.05
temperature of 80°C

141
 MAIN TECHNICAL PARAMETERS
TECHNICAL DATA OF ENGINES TRAKTORŮ PROXIMA (TIER III)
Type of tractor Major 80
Type of engine 1105
Max. coolant temperature °C 106
Kind of distribution OHV
Oil filter Full-flow single use
Fuel filter One-stage with replaceable element
Type of injection pump PP 4M 10P1i 3781
Type of nozzle DOP150S428-4104
Injectors opening pressure MPa 25-0,8
Injection advance angle ° 12
Valve clearance with cold engine
suction mm 0.25±0.05
exhaust mm 0.25±0.05

142
 MAIN TECHNICAL PARAMETERS
PERMITTED MAXIMUM LOAD OF FRONT AXLE (kg)
Wheel base (mm)
Travel speed km.h-1
1525
6 4 000
8 3 500
20 3 000
30 2 500
Load applies with regard for the axle itself, permissible load with regard for tires is given in table “Front tires bearing capacity”.

PERMITTED MAXIMUM LOAD OF REAR AXLE (KG)

Wheel base (mm)
Travel speed km.h-1
1525
8 4 000
20 3 500
30 3 000

Load applies with regard for the axle itself, permissible load with regard for tires is given in table “Rear tires bearing capacity”.

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 MAIN TECHNICAL PARAMETERS
PERMITTED MAXIMUM WEIGHT OF SET “TRACTOR + MOUNTED MACHINE” (kg)
Travel speed (km.h-1) Maximum weight of set
8 5500
30 4300

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 MAIN TECHNICAL PARAMETERS
FRONT TIRES STEERABILITY
Travel speed
30 km.h-1 8 km.h-1
Parameter of Bearing Bearing
tires capacity of tires capacity of tires
(kg) (kg)
Tire 1 piece axle inflation (kPa) Tire 1 piece axle inflation (kPa)
11.2-24 1225 2450 240 1700 3400 240
280/85R24 1250 2500 160 1700 3400 150

Note: Bearing capacity values apply for front wheel base of 1495 - 1525 mm and are in accordance with bearing capacity.
When operating on hard surfaces, it is advisable to increase the pressure by 30 kPa with regard for slippage and abrasion of
tires.

BEARING CAPACITY OF REAR TIRES

Travel speed
30 km.h-1 8 km.h-1
Parameter of Bearing Bearing
tires capacity of tires capacity of tires
(kg) (kg)
Tire 1 piece axle inflation (kPa) Tire 1 piece axle inflation (kPa)
16.9-30 2000 4000 120 2000 4000 80
480/70R30 2000 4000 150 2000 4000 80

Note: Bearing capacity values apply for rear wheel base of 1725 mm and are in accordance with the bearing capacity of axle.
When operating on hard surfaces, it is advisable to increase the pressure by 30 kPa with regard for slippage and abrasion of
tires.

145
 MAIN TECHNICAL PARAMETERS
HYDRAULIC SYSTEM
Type of tractor Major 80
Lifting force at the end of lower draw bars of rear three-point
linkage in the whole range of heave with maximum useful
pressure (kN) 26
Hydraulic system pump supply (l/min) 50
Working pressure (MPA) 18

146
 MAIN TECHNICAL PARAMETERS
TRACTOR´S SPEED IN KM/H WITH ENGINE NOMINAL REVOLUTIONS
Gear reduction Gear Forward speed Reversing speed
1L 1.43 1.20
2L 2.12 1.78
L
3L 3.11 2.61
4L 4.37 3.67
1M 3.64 3.05
2M 5.39 4.52
M
3M 7.89 6.62
4M 11.08 9.30
1H 9.65 8.11
2H 14.29 12.00
H
3H 20.91 17.56
4H 29.39 24.68

147
 MAIN TECHNICAL PARAMETERS
PERFORMANCE ON REAR PTO SHAFT
Performance on PTO shaft(kW±2%)
- with nominal engine revolutions and engaged 1000 min-1 of
PTO shaft
Nominal engine revolutions(2 200 rpm) 47
Maximum engine revolutions(2 460 rpm) 51

DEPENDENT PTO SHAFT REVOLUTIONS WITH NOMINAL ENGINE REVOLUTIONS

Gear reduction Gear 540 1000

1L 66 120
2L 96 176
L
3L 139 255
4L 202 369
1M 166 304
2M 242 443
M
3M 350 641
4M 507 928
1H 446 816
2H 650 1190
H
3H 941 1721
4H 1362 2492

INDEPENDENT PTO SHAFT REVOLUTIONS

labelling Shaft revolutions/engine Shaft revolutions/engine

revolutions revolutions
540 613 / 2200 540 / 1938
1 000 986 / 2200 1000 / 2231
148
 MAIN TECHNICAL PARAMETERS
CLEARANCE-CIRCLE AND TURNING CIRCLE DIAMETER
front 1502 mm Parameter front 11,2 - 24
Wheel base On the left On the right
rear 1505 mm of tires rear 16,9 - 30
Turning circle without engaged front drive axle 10500 10350
diameter (mm) with engaged front drive axle 11300 11100
Clearance-circle without engaged front drive axle 11020 10870
diameter(mm) with engaged front drive axle 11820 11620

149
NOTES

150
 INDEX
A Connecting machines and tools assembled from more
79
Accumulator battery 100 parts
accumulator battery maintenance 102 Connecting machines and tools to External hydraulic
79
Adjusting clutch pedal 138 circuit
Adjusting valve clearance 136 Contamination indicator function 123
Adjustment 135 Coolant heater 43
Aggregation with trailer and semitrailer 59 Coolant replacement 129
Air condition maintenance 133 D
Air system tightness inspection 133 Dashboard 31
Air-condition filtration elements 132 Dependent PTO shaft revolutions with nominal engine
148
Alternator 103 revolutions
Alternator maintenance 103 Detaching tractor 134
Anti-freezing solution for filling tires 97 Differential lock 33
Auxiliary ballast weights 93 Differential lock 48
Auxiliary hydraulic switchboard control 33 Direction indicator switch 25
B Draining liquid from tires procedure 96
Back assembly of air filter elements 125 Draining oil from engine 120
Ballast weights in front of bonnet grill 94 Draining the condensate from air collector 133
Basic service information 100 Drive away 44
Battery disconnector 36 Drive of agriculture machines 61
battery disconnector 101 Drive of machines with greater inertia masses 65
bearing capacity of rear tires 145 Driver´s seat 24
Before you start the engine 40 Driving operation 39
Bottom rear window 22 Driving with front drive axle engaged 48
C E
Cab air condition 28 Electrical installation 99
Cab heating 28 Engine heating 42
Cab heating registers 28 Engine run stop control 32
Clearance-circle and turning circle diameter 149 External hydraulic circuit 75
Cogged belt tension 136 Extrernal hydraulic circuit control elements 75
Cogged belt tension of air-condition compressor 136
151
 INDEX
F General principles of new tractor run-in in first 100
54
Filling tires with liquid procedure 96 hours of operation
Filling, controlling and draining hole of oil of front drive Getting acquaintance with a tractor 19
131 H
axle
Filtration elements cleaning 132 Headlights switch 25
Fixed and free position of lower hydraulic draw bars 83 Heating filtration element 132
Fluid to tractor cooling system 115 Hinged lid 23
Foot brakes pedals 49 Hydraulic control 32
Free (floating) position 70 Hydraulic control panel 69
From 100 hours of operation 55 Hydraulic equipment 67
Front bonnet opening 120 Hydraulic equipment 68
Front drive axle 116 Hydraulic sensitivity system control 71
Front drive axle control 48 Hydraulic system 146
Front drive axle control lever 35 Hydrostatic steering failure warning signalization 52
Front drive axle fenders 91 CH
Front hook 58 Change of front wheels track with front drive axle 88
Front tires steerability 145 Checking amount of oil in hydrostatic steering tank 126
Front wheels toe-in 90 Checking oil levels in engine 120
Front windshield wiper and washer 26 Checking the oil in gear box, final drive housing and
Fuel 115 130
rear axle
Fuel filter element replacement 122 I
Fuel system venting 122 If engine does not start 41
Fuel tank 37 Ignition system failure signalization 41
Fuel tank drain plug 37 Immediately after start 42
Fuse box 104 Important notification 52
G In first 10 hours of operation 54
Gear shifting 45 Independent PTO shaft revolutions 148
Gear shifting from higher to lower gears 46 Internal hydraulic circuit control elements 70
Gear shifting from lower to higher gears 46 L
Gear shifting lever 34 Leaving the tractor 51
Gear system drain plug 130
152
 INDEX
Lights adjustment in cab roof check 106 O
Lights adjustment in tractor´s grill 105 Oil replacement in gear system 131
Lights adjustment in tractor´s grill check 105 Oils for four-roller forced induction Zetor engines 112
Limiting draw bars 83 Oils of tractors transmission gears 112
Linkages 81 Oils to front drive axle 113
Lower draw bar with CBM hooks 85 Oils to hydrostatic steering for tractors 113
Lower draw bar with slipping out end pieces 85 One-section switchboard external hydraulic circuit
M 77
controlling levers function
Main air filter element regeneration 124 Opening doors from the inside 21
Main technical parameters 139 Opening doors from the outside 21
Main tractor´s parameters (mm) 140 P
Maintenance and treatment of tires 134 Panel of switches on cab´s roof 24
Maintenance instruction of dry air filter 124 Pedals 33
Maintenance instructions 119 Performance on rear PTO shaft 148
Maintenance of the tractor 107 Permitted maximum load of front axle (kg) 143
Major tractors 6 Permitted maximum load of rear axle (kg) 143
Making front wheels stable 95 Permitted maximum weight of set “tractor + mounted
Manipulation with starter 41 144
machine” (kg)
Manual brake and PTO shaft disengagement lever 35 Plastic lubricant for tractor 114
Manual disengagement of PTO shaft clutch lever 63 Position regulation of rear three-point linkage heave 72
Manual fuel control lever 32 Pouring oil to engine 121
Maximum permitted vertical static suspensions load for Power regulation of three-point linkage heave 73
60
trailers and semitrailers Preventive daily maintenance 13
Maximum transmitted output 65 Production numbers placement - tractor with a cab 7
Means of internal hydraulic circuit regulation 69 PTO shaft clutch control lever adjustment 137
Mixed regulation of three-point linkage heave 74 PTO shaft covers 62
Modular suspension system for trailers and semi- PTO shaft drive engagement lever 36
59
trailers PTO shaft drive engagement lever 63
Multistage adjustable suspension 58 PTO shaft revolutions 540 and 1000 rpm shifting lever 36
Notification signalization of air pressure drop 49

153
 INDEX
Q Steps taken after every 100 hours of operation 108
Quick-couplers engagement and disengagement 78 Steps taken after every 500 hours of operation 109
R Steps taken beyond 500 Mth interval 109
Steps taken daily always before starting the works 108
Rear PTO shaft – dependent revolutions 64
Stopping the engine 51
Rear PTO shaft – independent revolutions 64
Stopping the tractor - manual brake 51
Rear three-point linkage 82
Swing drawbar 59
Rear wheel track change 92
Swing drawbar bracket module 59
Rear window 22
Switch box key in the position (0) 27
Replacing dry filter locking element 124
Switch box key in the position (i) 27
Replacing fillings and filters 110
121 Switch box key in the position (ii) 27
Replacing full-continuous motor oil filter
Switches and controls on the dashboard 25
Replacing oil and hydrostatic steering filter element 126
Replacing oil filter element of hydraulic pump 130 T
Replacing the hoses of hydrostatic steering 128 Technical data of engines 141
Reversing lever 34 Three-point linkage and rear semi-axes bearings 117
Road and reduced speeds shifting lever 34 Tightening heads of rollers 136
S Tilting steering wheel 24
Tire inflation 134
Safety cab 21
Tractor drive-in 53
Safety principles when working with a three-point lin-
82 Tractor greasing plan 116
kage
Securing lower draw bars with CBM hooks 85 Tractor´s speed in km/h with engine nominal revoluti-
147
Selecting driving direction - Reversing lever 45 ons
Tractor´s weight 140
Selection of holes in bracket 84
Trailer and semi-trailer air brakes 49
Selection of road or reduced speeds 45
Transport usage 57
Setting wheel stops with front drive axle 89
Travelling down the slope 47
Setting wheel stops with front drive axle check 89
Travelling up the slope 47
Side window 23
50 Two-section switchboard external hydraulic circuit
Single hose air brakes for trailer 76
controlling levers function
Speed of three-point linkage lowering control 71
Starting the engine 40 U
Starting the engine while using coolant heater 43 Upper draw bar 84
154
 INDEX
Upper draw bar 84
Used operation liquids and fillings - amount 111
User’s safety instructions 9
V
Valve for filling tires with liquid 95
Venting hydraulic circuit of hydrostatic steering 127
Vertical adjusment of lifting draw bars 83
Vertical adjustment and multistage suspension disas-
58
sembly
W
Wheel track change 87
Wheel track toe-in in tractors with front drive axle 91
Working with PTO shaft 62

155
Operator's manual
MAJOR 80

Edition: 1-100-2013
Publication No.: 222.212.653
ZETOR TRACTORS a.s.
Department of Technical Documentation
Trnkova 111
632 00

156