TNB-2M TNB-7E TNB-160

TNB-3M TNB-14E TNB-190

TNB-4M TNB-220
TNB-5M TNB-230
TNB-6M TNB-310
TNB-400

M A N U A L

Carefully read all instructions before operating

or servicing any TOKU tools.

TOKU PNEUMATIC CO.,LTD.

(1) INTRODUCTION

This instruction manual is a guide book to the T6KU Hydraulic Breaker. This manual gives instructions
on how to use the Breaker safely and effectively.
Before operating the Breaker, operators and maintenance personnel should read this manual carefully
making sure that they understand the contents.
Keep this manual handy and ensure all personnel read it periodically.

The TOKU breaker is fitted to a hydraulic excavator as an attachment; Therefore, this manual must be
kept together with your hydraulic excavator manual.

A WARNING
Improper operation can be hazardous and could result in serious injury or death.
Operators and maintenance personnel should read this manual periodically and always keep it handy.
Do not operate the product unless you understand and comply with the contents of the instruction
manual.
If this manual is lost or becomes dirty, ask for a replacement manual from TOKU Pneumatic Co., Ltd.
If you transfer the breaker to another source, make sure that you give this manual to the new owners.
If you hire out the breaker, make sure that you give this manual to the user.

1
(2) SAFETY INFORMATION

In order to prevent accidents, read, understand and follow all the precautions and warnings in this manual
before using the breaker. The following words are used to identify safety messages in the manual.

WARNING;This word is used in safety messages and on safety labels where a potentially dangerous
situation could result in serious injury or death of the hazard is not avoided. These safety
messages or labels usually describe precautions that must be taken to avoid the hazard.

CAUTION; This word is used in safety messages and on safety labels for hazards which could results in
minor or moderate injury if the hazard is not avoided. This word may indicate hazards whose
result could be damage to the machine.

(3) INTENDED USE

The TOKU HYDRAULIC BREAKER is designed to be used mainly for the following work.

Demolition of Concrete and secondary breaking.

Demolition of Asphalt and secondary breaking.
Demolition of Rock.
Secondary demolition of Rock.
Quarry applications.
Demolition of Buildings.
Road Construction.

4) OPERATIONAND QUALIFICATIONS

Operators must be trained before operating a TOKU BREAKER and must obey all rules at the worksite
and local regulations which affect the operator and equipment.

2
CONTENTS

1. INTRODUCTION
2. SAFI"y INFORMATION

3. INTENDED USE
4. OPERATION AND QUALIFICATIONS
5. GENERAL PRECAUTION
6. SPECIFICATIONS
7. PRINCIPLE OF OPERATION
8. STRUCTURE
9. PIPING FOR THE HYDRAULIC BREAKER
10. INSTALLATION OF THE HYDRAULIC BREAKER ONTO THE EXCAVATOR
11. INSTALLATION OF THE CHISEL
12. INSTALLATIONAND LUBRICATION PRIOR TO OPERATION
13. OPERATING THE BREAKER
13-1. OPERATING OF HYDRAULIC BREAKER
13-2. PRECAUTION DURING OPERATION
14. REPLACEMENT OF CHISEL
15. DISMANTLING THE BREAKER
16. LONG-TERM STORAGE OF THE BREAKER
16-1 STORAGE FOR ONE MONTH
16-2 BREAKER STORAGE FOR MORE THAN ONE MONTH
17. MAINTENANCE AND INSPECTION
17-1 ADJUSTMENT AFTER THE FIRST 20 HOURS OF OPERATIONAND AFTER
EVERY 200 HOURS OF OPERATION
17-2 MAINTENANCEAFTER 100 HOURS OF OPERATION
17-2-1 CHANGING OIL FILTER ELEMENT
17-2-2 INSPECTION AND FILLING OF NITROGEN GAS
17-2-3 CHEKING THE GAS PRESSURE
17-2-4 REFILLING WITH NITROGEN GAS
17-2-5 INSPECTION OF CHISEL BUSH WEAR
17-2-6 INSPECTION OF RETAINER PINS
17-3 CARRY OUT MAINTENANCE EVERY 600 HOURS OF OPERATION
17-3-1 HYDRAULIC OIL CHANGE

3
18. UNDER WATER APPLICATION
19. TROUBLE SHOOTING GUIDE
19-1. OIL LEAKAGE
19-2. GAS LEAKAGE
19-3. POOR OPERATION OF BREAKER
20. PARTS LIST FOR UNDER WATER APPLICATION
21. ACCESSORY TOOL
22. OPTION TOOL
23. AUTHORIZED DISTRIBUTORS RECORD

4
(5) GENERAL PRECAUTIONS

A WARNING
When operating the hydraulic breaker, read the instruction manual for the hydraulic excavator and
obey the safety requirements.

SAFETY RULES AT THE WORK SITE

Only trained and authorized personnel can operate and maintain the machine.
Follow all safety rules, precautions and instructions when using the breaker.
Follow the rules for group work when more than 2 people are working together.
I I

1 PROTECTION AGAINST FALLING OR FLYING OBJECTS I

When operating a hydraulic breaker, install a front guard on the windscreen. Also place a laminate
coating sheet over the windscreen.
For work in mines, tunnels or other places where there is a danger of falling rocks, fit a FOPS
(falling object protective structure). Also place a laminate coating sheet over the windscreen.
When operating a breaker, make sure that you close the front window.
During operation, make sure all personnel are out of range of materials which may fly up.

FOPS (FALLING OBJFCTS

PROTECTION STRUCTURE)

FRONT GUARD

COATING SHEET
FOPS

5
 CLOTHING AND PERSONAL PROTECTION ITEMS

Depending on the type of job, do not forget to wear a hard hat, safety goggles, safety boots, mask
and gloves. Especially when operating a mini-excavator where a cabin is not installed on the
machine, it is essential to wear a hard hat, protective goggles, safety boots, a mask and gloves.

I I

DO NOT DISASSEMBLE

The hydraulic breaker contains a high volume of pressurized nitrogen gas. It can therefore be
dangerous if the breaker is not dismantled correctly. As a result, if the breaker needs service, please
contact TOKU or an authorized distributor/service depot.

UNAUTHORIZED MODIFICATION

Non-approved modifications can cause injury and damage.

Consult your TOKU dealer for advice before making any modifications. TOKU will not accept
responsibility for any injury or damage caused by any unauthorized modifications.
I

6
 WARNING - HIGH PRESSURE OIL

Do not remove the hydraulic hose immediately after stopping the hydraulic breaker. The oil reaches a
very high temperature during operation and may possibly cause burns. Remove hose only when the
temperature has dropped.

I WARNING-HIGHPRESSUREOIL I
The oil pressure in the hydraulic circuit remains high immediately after the hydraulic breaker has been
stopped. The oil may spurt out from the hose cap when the hose is removed. Remove the hose only
after switching off the engine of the excavator and releasing the pressure in the hydraulic hose.

A CRANE SHOULD BE USED FOR HANDLING HEAVY MAERIAL I

*Assembly and disassembly work should be performed in a flat area.
*A signal must be decided in advance for the work if two people are involved.
*Make sure that a crane is used for lifting of the material weight exceeds 25 kg.
*When dismantling heavy parts, support the part as it is removed.
*Do not work on materials that are being lifted by one means or another, put them on a work table.
*When assembling and disassembling the hydraulic breaker, make sure that the breaker is well
balanced.
Never remain under material which is being lifted by a crane.
*Keep away from material which is being lifted.

USE SUITABLE TOOLS

It is very dangerous to use worn and broken tools and to misuse tools. Use the proper tools for
maintenance.

POSITION THE HYD. BREAKER

Position the hydraulic breaker in a stable and flat place so as to prevent it from over turning.

7
(6) SPECIFICATIONS
‘‘ M Series
”

~~

MODEL TNB -08M TNB-1M TNB-2M TNB-3M TNB -4M TNB -5M TNB-6M
ITEM

Without chisel
Total Length mm 61 1 670 716 815 876 945 975

With chisel
mm 896 950 1006 1151 1236 1345 1375

Breaker including
Weight chisel 36 50.3 12 110 138 171 191
kg

Total Weight
including bracket 56 72 94 164 220 29 1 318
kg

Diameter
Chisel 58 64 75 75
mm 40 45 50

Weight
kg 3.5 4.8 8 12 14 21 21

Operating Pressure
Operating
specs.
MPa 5.9- 12.7 -
6.9 13.7 7.8-14.7 9.8- 14.7 -
9.8 15.7 -
9.8 15.7 -
9.8 15.7
(Kg/cmz) (60- 130) (70- 140) (80- 150) (100- 150) (10C- 160) (100-160) (100- 160)

Hydraulic Flow
l/min 18-25 20-30 -
20 35 25 -45 30-55 35-60 40-70

Frequency
930- 700 - 600 - 550- 580- 550- 600 -
bPm 1 150 1060 1000 1050
1300 1200 lo00

Weight
Appropriate
Excavator
ton 0.7 - 1.0- 1.5- 2.4 - 3.0- 4- 5.5 -

8
 " E " Series

TNB -7E TNB-14E

ITEM

Without chisel
rota1 Length 1262 1575

With chisel
mm 1476 1602 ' 1764 2190

Breaker including
Weight chisel 249 339 504 850
kg

Total Weight
including bracket 391 650 903 1550
kg

Diameter
2hisel
mm 95 95 115 135

Weight
kg 36 36 70 115

Operating Pressure
*rating MPa 9.8-15.7 10.8-16.7 11.8-16.7 12.7-16.7
specs. (100-160) (110-170) (120- 170) (130- 170)
(Kdcmz)

Hydraulic
Flow 45-80 70-100 70- 110 130-170
I/min

Frequency 550- 600 - 450- 460-

bpm
1000 900 700 600

I I
Appropriate Weight I I
Excavator
ton I 6- I 7-
10- 18-

9
 " O Series
"

I I
TNB -160 TNB -400
ITEM

Without chisel

7
Total Length
1680 2258

With chisel
2295 3074

Weight
Breaker including
chisel kg 1 1 561 878 957 2258

Total Weight
including bracket 1707 4326
kg

Diameter

+
Chisel
mm 135 178

Weight I I 115 265

Operating Pressure
Operating
-
12.7 16.7 13.7-17.7

1 1
Specs.
130- 170) 140- 180)

Hydraulic
150- 280-
Flow l6;i
200 390
I/min

Frequency
bPm
430- 450- 440 - 370 -
600 600 580 470

Appropriate
Excavator
Weight
ton 15- I 18- 22 - 50-

lo
(7)PRINCIPLE OF OPERATION
TNB-OSM TNB-SM-
(1) Upward movement (2) Reversing (3) Downward movement (4) Impact

0-

(1) Upward movement:

Oil flows into chambers 1 and 9: the control valve is pressed in the downward direction.
The piston moves in the upward direction toward the cushion chamber 5.
Oil in the opposite chamber 4 is discharged through chamber 6 and 7.

(2) Reversing Direction:

When the lower flange fills with oil, it reaches chamber 2. At this point both chambers 8 and 9 exert
the same pressure on the flange but the control valve moves in the upward direction due to the area
difference between the flanges.

(3) Downward movement:

When the control valve rises and reaches chamber 9, the flow moves through chamber 6 then 4.
Due to the difference in area between the piston flange and the force from the cushion chamber
pressure, the piston accelerates downwards.

(4) Impact:
The piston hits the chisel. At this point the mid-section of the piston reaches chamber 2 and as a
result chamber 8 releases the pressure through chamber 2 and 3.
When chamber 8 is empty, as chamber 9 is constantly pressurized, the valve moves in the
downward direction.

Repetition of the cycle mentioned above results in continuous blows.

11
TNB-6M, “E ” Series and “ 0 ” Series

(1) Upward movement (2) Reversing (3) Downward movement (4) Impact

-tr-
(1)Upward movement:
Oil flows into chambers 1 and 8: the control valve is pressed in the downward direction.
The piston moves in the upward direction toward the cushion chamber 5.
Oil in the opposite chamber 4 is discharged through the control valve into chamber 7.

(2)Reversing direction:
When the lower flange fills with oil, it reaches chamber 2. At this point both chambers 6 and 8
exert the same pressure on the flange but the control valve moves in the upward direction due to the
area difference between the flanges.

(3)Downward movement:
When the control valve rises and reaches chamber 8, the flow moves through the control valve and
reaches chamber 4.
Due to the difference in area between the piston flange and the force from the cushion chamber
pressure, the piston accelerates downwards.

(4)Impact:
The piston hits the chisel. At this point the mid-section of the piston reaches chamber 2 and as a
result chamber 6 releases the pressure through chamber 2 and 3.
When chamber 6 is empty, as chamber 8 is constantly pressurized, the valve moves in the
downward direction.

Repetition of the cycle mentioned above results in continuous blows.

12
(8) STRUCTURE
-
1) TNB-08M 5M

Side Bolt Nut

Control Valve Cap

Chisel Holder Bushing

Chisel

13
 Gas Valve
/------

Hose Adapter IN
r
I
RW
/,-----
Low Pressure Port

Hose Adapter OUT

Y
@ T

1_: 0 0
7
Grease Nipple

14
2) TNB-6M, “E” Series and “ 0 ” Series

Control Valve Box

15
 ,
Gas Valve

Hose Adapter OUT

0

Auto Lubvication Port

7
\ LowPressurePort

Grease Nipple
O I /

16
(9) PIPING FOR THE HYDRAULIC BREAKER

In order to install the hydraulic breaker, piping for the hydraulic breaker is required as shown in the
diagram below.
Check whether piping for the hydraulic breaker is installed.
If piping for the hydraulic breaker is not installed, consult with our dealer.

Hyd. breaker Stop valve

I Relief valve
Hyd. pump

17
0 Mini Excavator

Relief &he

18
(10) INSTALLATION OF THE HYDRAULIC BREAKER ONTO THE EXCAVATOR

A CAUTION !
When hammering the pin, metal chips fly off and may enter your eye causing serious injury. Always
wear a hard hat, protective goggles, safety boots, gloves and other protective equipment during
operation.

Work should be performed in a stable and flat area.

Read the manual for the hydraulic excavator carefully and remove the
attachment which is installed on the excavator.

0 Lie the hydraulic breaker in a stable and flat area.

@ Fit the bracket bushing to the inside of the bracket.

@ Position the arm in the hole (l),then place the link in the hole (2).
Apply grease to pins A & B and insert them into the holes.

@ Fit the nuts and bolts to hold the pins and apply grease to the pin.

Bracket pin

\
/
Bracket ring nuts
Bracket ring

19
@ Extend the arm and boom and prepare for @ Attach the hydraulic hose to the piping on the
installation. arm of the breaker.

Stop valve

0open the stop valve.

\ stopva~ve
,

20
(11)INSTALLATION OF THE CHISEL

@ Lie the hydraulic breaker on the ground.

@ Apply grease to the inside of the chisel

bushing and chisel, and insert the chisel into
the chisel holder.

*Use a crane when installing the chisel for

sizes above TNB-6E.

@ Insert the retainer pins.

@ Insert the retainer pin stopper and hammer

in the retainer pin stopper plug.

Retainer pins bar

21
(12)INSPECTION AND LUBRICATION PRIOR TO OPERATION

The hydraulic breaker is an attachment to the hydraulic excavator. Read the instruction manual
for the hydraulic excavator carefully and carry out an inspection prior to operation. Also carry
out the inspection and lubrication of the hydraulic breaker as specified below.

12-1 INSPECTION PRIOR TO OPERATION

Check for loose bolts and nuts and oil leakage from the hydraulic breaker bracket as well
as the piping of the hydraulic breaker. Repair if required.

12-2 LUBRICATION OF CHISEL

Before greasing, f d y press the chisel into the chisel holder. Apply grease to the grease
nipple on the chisel holder by using a grease gun every three hours.

Number of timmes to
push the grease gun
TNB-08M I 2-3 I
TNB-1M I 2-3 1
TNB-2M 2-3
TNB-3M 4-5
TNB-4M 4-5
TNB-5M 5-6
TNB-6E I 5-6 I
TNB-6.5E I 6-7 I
TNB-7E 6-7
TNB-100 7-8
TNB-14E I 7-8 I
TNB-150 7-8
I
TNB-160 8-9

TNB-3 10 9-10
TNB-400 I 10-11

*Note:
Make sure the chisel is completely in contact with the piston and in the deep back position
before greasing, otherwise, grease will stay between the chisel and the piston and it could cause
damage to the hammer.

Before greasing, place chisel of the hydraulic breaker on the ground, lower the boom of the
excavator and press the chisel into the chisel holder.

22
(13) OPERATING THE BREAKER

The hydraulic breaker is an attachment to the hydraulic excavator. Follow the instruction manual for the
hydraulic excavator when starting the machine and position the throttle of the excavator at the mark for
the hydraulic breaker. Then, follow the excavator manual for operation.

13- 1 OPERATION OF HYDRAULIC

BREAKER

Place the breaker against the object at a 90

degree angle.

When operating the breaker, raise the chisel

against the object and the front portion of the
excavator about 5 cm from the ground.
Ensure that the front part of the excavator is not raised
too high.

When breaking up an object which is large and hard,

start where the rock can be easily broken.

23
After striking against the same point continuously
for 1 minute without the rock breaking, change to
another area of the rock.

When the breaker is set to demolish an object, the

impact angle changes slightly during operation.
Constantly adjust the angle using the bucket
cylinder of the excavator.

77777

During impact, prevent blank blows by using the

breaker properly.

As soon as the material has broken, immediately

remove your foot from the operating pedal to stop
striking the material.

24
13-2 PRECAUTIONS DURING OPERATION

Do not use the breaker in the following manner since this will reduce the life of the breaker and may
result in reduced safety.

CAUTION
Do not operate the breaker when the cylinder on
the excavator is fully extended ( stroke-end). It
is essential to have about 5 cm of stroke in the
cylinder.

Ignoring this instruction will lead to the

hydraulic cylinder being damaged.

CAUTION
Do not jiggle the chisel when it has been
hammered into the material.

This will lead to side bolt or chisel breaking

or premature wearing of the chisel bushing.

CAUTION
Make sure that you do not hit the boom with the X
chisel during operation.

CAUTION
Avoid hitting the material abruptly with the
chisel.

This can cause damage to the breaker, bracket,

boom and swing parts on the excavator.

25
CAUTION
Do not use the breaker to move material.

This can cause damage to the breaker, breaker

bracket, excavator boom, arm and swing parts.

CAUTION
Do not lift materials with the breaker.

This will cause damage to the breaker and

breaker bracket and is a dangerous maneuver.

CAUTION
Do not operate the breaker under water.
Do not put any part of the breaker into water
except for the chisel.

This may cause damage to the hyd. breaker and

excavator.

When using the breaker under water, refer to the instructions for underwater
application on page 39 and 40.

26
(14)REPLACEMENT OF CHISEL

AWARNING
When hitting a pin with a hammer, always wear safety goggles, hard hat, heavy-duty gloves, mask and
safety boots due to the possibility of bits of material flying off which could enter your eye and cause
serious injury.

AWARNING
A crane should be used for handling heavy materials.

Assembly and disassembly work should be performed in a flat area.

A signal must be decided in advance for the work if more than two people are involved.
Make sure that a crane is used for lifting if the material weight exceeds 25 kg.
When dismantling heavy parts, support the part as it is removed.
Do not work on materials that are being lifted by one means or another: put them on a work table.
When assembling and disassembling the hydraulic breaker, make sure that the breaker is well
balanced.
Never remain under material which is being lifted by a crane.
Keep away from material which is being lifted.

IMPORTANT
A licence is required to operate a crane. Do not operate the crane without a licence.

14-1 REMOVING THE CHISEL

@ Place the breaker in a horizontal position,

about 30-50 cm above the ground.

27
@ Remove the plug using a retainer pin Retainer pins stopper
detacher. This should be removed from the
opposite side using a hammer.

I Retainer pins stopper plug I

@ Push the retainer pin up from the bottom
using a bar-stick.

@ Place the breaker on the ground.

@ Remove the chisel from the chisel holder.

*NOTE: Use a crane when removing the chisel

for sizes above TNBdE

14-2 INSERTING THE CHISEL

0 Place the breaker on the ground and stop the

engine of the excavator.

@ Apply a sufficient amount of grease to the

chisel and insert the chisel into the chisel
holder.

*NOTE : Use a crane when fitting the chisel for

sizes above TNl3-6E

@ Fit the retainer pins.

ammer
@ Insert the retainer pin stopper and plug using
the retainer pin stopper plug.

28
(15)DISMANTLING THE BREAKER

AWARNING
When hitting a pin with a hammer, always wear safety goggles, hard hat, heavy-duty gloves, mask and
safety boots due to the possibility of bits of material flying off which could enter your eye and cause
serious injury.

AWARNING
A crane should be used for handling heavy materials.

Assembly and disassembly work should be performed in a flat area.

A signal must be decided in advance for the work if more than two people are involved.
Make sure that a crane is used for lifting if the material weight exceeds 25 kg.
When dismantling heavy parts, support the part as it is removed.
Do not work on materials that are being lifted by one means or another: put them on a work table.
When assembling and disassembling the hydraulic breaker, make sure that the breaker is well
balanced.
Never remain under material which is being lifted by a crane.
Keep away from material which is being lifted.

IMPORTANT:
A licence is required to operate a crane. Do not operate the crane without a licence.

29
 AWARNING
When removing the hyd. hose, do not remove it immediately after stopping the breaker. The hydraulic
oil will still be hot and may cause bums. Remove the hose after the hydraulic oil has had time to cool.
Do not remove the hydraulic hose immediately after stopping the breaker as on removing the hose,
high pressure oil may squirt out. Stop the engine of the excavator and remove the excess pressure in
the line before removing the hose.

0 Place the breaker near the ground and locate

the top of the arm where the stop valve can be
reached.

@ Stop the excavator engine and remove the

excess pressure in the hose.

@ Turn the stop valve to the off position.

@ Remove the hyd. hose from the stop valve.

@ Do not allow any foreign matter to enter the

hose and hose adapter.

,
I
I
/ / / / / / / / / / / / / I
1

@ start the excavator engine.

@ Operate the excavator and place the

hydraulic breaker in a flat and stable
7
place. //

@ Remove the bolt and nut from the bracket pin.

@ Remove the 2 bracket pins. Bracket pin &

@ Lift the arm and remove the hyd. breaker from
the excavator.

30
(16)LONG-TERM STORAGE OF THE BREAKER

When the hydraulic breaker is not being used for a long period of time, proceed as follows:

16.1 STORAGE FOR ONE MONTH

0Apply a sufficient amount of grease to the

chisel and chisel bushing part of the retainer
pin.

@ Place the breaker on 2 pieces of wood.

Note : Lie the breaker down so that the
cylinder side is higher than the chisel
holder side.

@ Remove the hex plug from the chisel holder.

Spray anti-rust spray onto the piston area
and replace the hex plug in the chisel holder.

@ Place a canvas cover over the breaker

for storage.

31
16.2 BREAKER STORAGE FOR MORE
THAN ONE MONTH

@ Place the breaker on 2 pieces of wood.

Lie the breaker down so that the cylinder
side is higher than the chisel holder side.

@ Remove the chisel from the breaker. 1

8 Remove the nitrogen gas from the cylinder
cover through the gas valve.

@ Loosen the cap plugs on the hose.

@ From the chisel holder end insert a rod into

the piston and hit the stick lightly with a
hammer to push it up into the piston.
Note : During this procedure release any
excess N~ from the cushion
chamber.

@ Mount blind plug to hose joint.

0 Apply a sufficient amount of grease to the

inside of the chisel bushing and chisel and fit
chisel into the chisel holder.

@ Apply grease to the retainer pin holes.

8 Use a canvas sheet to cover the breaker.

$k After a long period of storage, if the N2 gas

was removed from the gas chamber, replace
the gas when using the breaker again.

32
(17)MAn\TTENANCEAND INSPECTION

AWARNING!
The TNB hydraulic breaker is an attachment for a hydraulically operated excavator. All maintenance
and service personnel should carefully read the instruction manual for the hydraulically operated
excavator before carrying out maintenance and inspection of the TNB hydraulic breaker.

A WARNING!
The metal chips produced when hitting a pin into a hole using a hammer may fly off and enter your eye
resulting in serious injury. Always wear a hard hat, protective goggles, safety boots, mask, gloves and
other protective equipment during operation.

17-1 ADJUSTMENT AFTER THE mRST 20 HOURS OF OPERATIONAND AFTER EVERY 200
HOURS OF OPERATION.
Checking and retightening loose bolts and nuts;
Check for any loose bolts and nuts on the hydraulic breaker, bracket and piping. Retighten
again on the basis of the torque table shown below if any looseness is found.

Torque Chart TORQUE:N.m@g.m)

33
 ITEM I TNB-100 TNB-190 TNB-160 "3-190 TNB-220 "3-230 "3-310 TNB-400

17-2 MAINTENANCE AFI'ER EVERY 100 HOURS OF OPERATION

17-2-1 CHANGING THE OIL FILTER ELEMENT

* Where there is no filter in the piping of the hydraulically operated excavator, change the
element of the oil filter in or near the hydraulic oil tank of the excavator after every 100 hours
of operation.

r
~~ ~

AWARNING
Various parts will be very hot after operation of the engine. Do not change the filter element
immediately. Change the element after the hydraulic oil and various parts have cooled off.

I I

34
17-2-2 INSPECTION AND FILLING OF NITROGEN GAS

AWARNING
Do not use any other gas except nitrogen.

AWARNING
When filling nitrogen gas, the chisel may suddenly come out. Therefore, keep away from the chisel
when refilling with nitrogen gas.
~~

Nitrogen gas is contained inside the cylinder cover of the hydraulic breaker.The impact force
will decrease if the gas pressure reduces. Check the gas pressure after every 100 hours of
operation. If the gas pressure is low, fill the cushion chamber with nitrogen gas according to
the following procedures.

17-2-2-1 CHECKING THE GAS PRESSURE

fi
@ Place the hydraulic breaker about 30-50 cm
from the ground in a horizontal position for
easy access.

30-5Ocm

@ Remove the gas valve plug from

the cylinder cover.

0Insert a pressure gauge into the

valve and measure the nitrogen
gas pressure.

Gas valve I 1

NITROGEN GAS PRESSURE CHART : PRESSURE:MPa (kgf/cm*)

NITROGEN GAS

35
17-2-2-2 REFILLING THE NITROGEN GAS
Hose,
0Fit a pressure regulator and hose onto the
nitrogen gas cylinder.

@ Fit a filling adapter to the end of the hose

and insert the adapter into the gas valve.
*da;ter /-J
Gas cylinder

0Open the regulator valve of the nitrogen gas

cylinder.
n

@ Turn the handle of the pressure regulator

while reading the pressure gauge of the
regulator. Fill with nitrogen gas up to the
pressure shown in the table.

@ Stop turning the handle after the gas pressure

reaches the correct value shown in the table
and keep it there for about 10 seconds.

@ Close the regulator valve of the nitrogen gas

cylinder.

0Remove the adapter inserted in the gas valve.

pressure gauge
@ Insert a pressure gauge into the gas valve
and check the gas pressure.

8Adjust the gas pressure down to the correct

value using the nitrogen gas pressure gauge
if the gas pressure value is higher than the
correct value shown in the table.

@ Fit the plug onto the gas valve and tighten it

to the prescribed torque value.
anner
0Remove the hose and the pressure regulator
attached to the nitrogen gas cylinder and
store them in the tool box.

parts for measuring the nitrogen gas pressure and for gas filling are available from TOKU or service
stations specified TOKU in accordance with the parts numbers listed on page 50.

36
17-2-3 INSPECTION OF CHISEL BUSHING WEAR

Inspect the wear of the chisel bushing after every 100 hours of operation.

0Lie the hydraulic breaker on the ground

horizontally.

@ Measure the clearance between the Chisel

bushing and chisel; Check whether the clearance
is within the permitted values shown in the
table below.

@ It is essential to change the chisel bushing if the

clearance is not within the permitted values
shown in the table below.
As regards to changing the chisel bushing, please
contact TOKU or the service stations
specified by TOKU.

MODEL TNB-O8M TNB-1M TNB-2M TNB-3M TNB-4M TNB-5M TNB-6M

WEAR WIDTH (mm) 4 4 4 4 4 4 4

1 MODEL I TNB-6E I TNB-6.5E I TNB-7E I TNB-14E 1

WEAR WIDTH (mm) 6 6 7 8

MODEL TNB-100 TNB-150 TNB-160 TNB-190 TNB-220 TNB-230 TNB-310 TNB-400

WEAR WIDTH (mm) 7 8 8 8 10 10 10 12

37
17-2-4 INSPECTION OF RETAINER PINS

Inspect the retainer pins after every 100 hours of use.

AWARNING
When hammering the pin or repairing the retainer pin using a grinder, metal chips may fly off and enter
your eye resulting in serious injury. Always wear a hard hat, protective goggles, safety boots, mask,
gloves and other protective equipment during operation.

“M” Series and “ E ” Series

0Place the hydraulic breaker parallel to the
ground in a horizontal position, about 30-50 cm
above the ground.

@ Check to see if there is a Radial Trace on the

retainer pin. 3a

@ A Radial Trace shows that everything is

normal.

@ If a Radial Trace cannot be seen, this means

the retainer pin is not rotating properly. If
this is the case, remove the retainer pin
stopper by using a retainer pin remover.

@ Remove the retainer pin by using a chisel pin

remover from the lower side of the retainer
pin.

@ Remove any steel build-up from around the

retainer pin by using a grinder.

@ Insert the retainer pin in to the retainer pin

hole.

@ Insert the retainer pin stopper and assemble

the retainer pin stopper plug.

I I
“0” Series
@ Position the Hydraulic breaker horizontal to the ground
about 30-50cm. Turn the Excavator engine off.

@ After about 150-200 operating hours, inspect the retainer

pins.

@ Remove the retainer pin stopper and retainer pin stopper

plug from the opposite side by knocking it out using the
chisel pin removal tool.

@ Remove the retainer pins by pushing up using the chisel

pin removal tool.

@ Repair the excess bulge buildup around the retainer pins

using a grinder.

8Insert retainer pins back into the retainer pin holes.

The retainer pins have 4 surfaces that can be used so that
the wear is equally distributed.

@ Insert the retainer pin stopper and plug back into the
breaker.

39
17-3 MAINTENANCE AT EVERY 600 HOURS OF OPERATION

17-3-1 HYDRAULIC OIL CHANGE

AWARNING
After operating the hydraulic excavator many parts are still hot. Do not change the hydraulic oil until
the hydraulic oil and parts have cooled.

Read the Instruction Manual for the hydraulic excavator fully and change the oil for the excavator
every 600 hours.

40
( 18) UNDERWATER APPLICATION

AWARNING
A standard specification TNl3 hydraulic breaker cannot be operated underwater.

When using the hydraulic breaker underwater, use the underwater specifications.

0Prepare a 5 -10 HP compressor.

@ Arrange the following piping as shown in the diagram below.

Regarding the air supply piping, please consult TOKU or your nearest TOKU distributor.

41
@ Before operating the compressor, read the instruction manual for the compressor carefully.

@ Make sure the air pressure is in accordance with the following chart.

Depth in Water (m) Air Pressure (MPa kg/cm*)

3 0.15 (1.5)

5 0.18 (1.8)

10 0.22 (2.3)

@ Supply air to the hydraulic breaker and start operation.

*Make sure air is being supplied to the hydraulic breaker before it is put into the water and
continue until it is removed from the water.

8After completing the underwater application, bring the breaker out of of the water onto land and
then stop the compressor.

@ Continue to operate the breaker for about 10 minutes out of the water with
supplying air, in order to dry the blow chamber.

@ Grease the chisel with the chisel pressed into the breaker.

Piping materials for underwater application are available from TOKU or service stations
specified TOKU in accordance with the part numbers listed on page 46.

42
(19)TROUBLE SHOOTING GUIDE

19-1 OIL LEAKAGE

By referring to the following chart, when oil leakage occurs, investigate the cause and repair accordingly.
After fitting the hydraulic breaker on the excavator, sometimes you may see oil ooze from the breaker.
This is grease which is used in assembly and may continue for up to 5 hours, but will stop eventually. But
please note, oil coming from section A ( See sketch) between the chisel and chisel bushing, this oil is for
lubrication purposes and is normal.

19-1-1 TNB-08M - 5M

Sym Oil leakage from Cause Countermeasure

A Opening between the chisel Wear or damage of oil seal * replace oil seal
and chisel bushing Seizure of piston & cylinder * Repair or replace
B Between the cylinder cover I Wear or damage of O-ring I * Replace O-ring and
and cylinder. or back up ring back up ring
Loosening of the side bolt nut Retighten to the specified torque

C Between the cylinder and Wear or damage of the O-ring * Replace O-ring
the Choke plug. Loosening of the choke plug Retighten the choke plug
(TNB-OSM - 5M) to the specified torque

D Between the cylinder and Wear or damage of the O-ring * Replace O-ring
hose adapter. Loosening of the Hose adapter Retighten the hose adapter to
the specified torque

43
19-1-2 TNB-6M, “ E ” Series and “0”
Series

~ ~~

Sym Oil leakage from Cause Countermeasure

Opening between the chisel Wear or damage of oil seal * Replace oil seal
and chisel bushing. Seizure of piston & cylinder * Repair or replace
B Between the cylinder cover Wear or damage of O-ring * Replace O-ring and
and cylinder. or back up ring back up ring
Loosening of the side bolt nut Retighten to the specified torque

C Between the cylinder and Wear or damage of O-ring * Replace O-ring and
the control valve box. or back up ring back up ring
Loosening of the bolts on the Retighten bolts to the specified
control valve box torque

D Between the control valve Wear or damage of O-ring * Replace O-ring and
box and the control valve
cap.
control valve cap control valve cap to the specified
torque.

E Between the cylinder and Wear or damage of O-ring * Replace O-ring

hose adapter. Loosening of the Hose adapter Retighten the hose adapter to
the specified torque.

Note: “*“It is necessary to disassemble the hydraulic breaker in order to repair.

Please contact TOKU or your nearest TOKU distributor.

44
19-2 GAS LEAKAGE

It is abnormal for the nitrogen gas to leak more than 3kg/cm* per day. Check the areas as shown in the
chart for repairs.

*In this case, it is necessary to disassemble the breaker in order to perform repairs.
Please contact TOKU or an authorized TOKU distributor or dealer.

TNB-08M - 5M

TNBdM, “E ” Series and “ 0 ’’ Series

d
AREA OF GAS LEAKAGE CAUSE COUNTERMEASURE

F Gas leakage from the gas Wear or damage of O-ring Replace O-ring
valve plug. Damage of the gas valve Replace gas valve
piston
~~ ~

G Gas leakage from the gas Wear or damage of O-ring Replace O-ring
valve body.

H Gas leakage from between Wear or damage of O-ring Replace O-ring

the cylinder and cylinder
cover.

I If gas leakage cannot be Wear or damage of the gas Replace gas seal
found from the above areas. seal.
Wear or damage of O-ring Replace o-ring
Seizure of piston and Replace or repair.
packing bushing

45
19-3 POOR OPERATION OF BREAKER

CONDITION CAUSE COUNTERMEASURE

Does not Impact. Temperatureof the hydraulic Warm up the hydraulic

oil is too low. excavator.
The nitrogen gas pressure in Adjust the nitrogen gas to the
the cushion chamber is too high. correct pressure.
Stop valve is closed. Open the stop valve.
Pressure setting for the * Set the relief valve to the
relief valve is too low. correct DESSUE setting.
* Have the hydraulic excavator
~

Poor performance of the

hydraulic pump. manufacturer to check the
pump performance. If the
performance is poor, repair
or replace.

Erratic Blows Seizure of control valve * ReDair or redace control valve

* Repair or replace piston, cylinder
~

(At the beginning breaker Seizure of piston and cylinder

Operates normally but later Relief valve for the excavator * Set the relief valve to the
blows are erratic). is set too low. correct ~ressuresetting.
Poor performance of the * Have the hydraulic excavator
hydraulic pump. manufacturer to check the
pump performance. If the
performance is poor, repair
or replace.
Lack of down pressure onto Operate the arm and bucket so
the chisel that pressure is applied to the
chisel.
Nitrogen gas pressure in the Adjust the nitrogen gas to the
cylinder cover is too high. correct setting.

Lack of Power Nitrogen gas pressure in the Adjust the nitrogen gas to the
cylinder cover is too low. correct setting.

Lack of Blows Nitrogen gas pressure in the Adjust the nitrogen gas to the
cvlinder cover is too high. correct setting.
Lack of down pressure onto Operate the arm and bucket so
the chisel that pressure is applied to the
chisel.

Pressure setting for the * Adjust the relief valve to the

relief valve if the excavator correct setting.
is too low.
Poor performance of the * Have the hydraulic excavator
hydraulic pump on the manufacturer to check the
excavator. pump performance. If the
performance is poor, repair
or replace.
Back pressure developing due * Investigate the blocked area of
to blocked hydraulic piping. the piping and repair or replace
the piping.

Note: "*"Itis necessary to disassemble the hydraulic breaker in order to repair.

Please contact TOKU or your nearest TOKU Dealer.

46
(20) PARTS LIST FOR UNDER WATER APPLICATION

47
Under Water Application List For Piping Material

“M” Series and “ E ” Series

TNB-310,400
TNB - I00,150,160,190,220,230

SYm Part Code Description Q’ty Description Q’ty

1 45” Elbow 18-20-13-309 1 18-20-13-412 1

2 Hose Nipple 13-50-09-009 2 13-50-09-012 2

3 Air Hose 13-72-02-013 1 13-72-02-016 1

4 ABA Hose Clip 13- 75 -06 - 115 2 13-75-06-115 2

5 Hose Adaptor 18-20-04-309 1 18-20-04-412 1

6 Deduction Valve 13-55-06-001 1 13-55-06-005 1

7 I Nipple I 18-21-26-310 1 1 1 18-21-26-415 I 1

8 ABA Hose Clip 13-75-06-144 7 13-75-06-144 7

9 Bushing 18-21-30-410 1 -

10 Deduction Valve Gauge 13-75-06-030 1 13-75-06-030 1

11 Wall Bracket 13-75-06-021 1 13-75-06-033 1

12 Deduction Valve Bracket 41 -51 -47--40 1 41 -51 -47--40 1

13 Deduction Valve Bracket Base 41 -51 -47--50 1 41 -51 -47--50 1

14 I HexBolt 1 13-16-08-020 I 2 I 13-16-08-020 1 2

15 HexNut 13-44-01-008 2 13-44-01-008 2

16 Spring Washer 13-13-01-008 2 13-13-01-008 2

17 High Tension Bolt 13-16-60-020 2 13-16-60-020 2

18 Spring Washer 13-13-01-010 2 13-13-01-010 2

48
(21) ACCESSORY TOOLS
-
r”B -08M TNB-1M TNB-2M TNB - 3M TNB -4M TNB-5M TNB -6M
No - - -
.
- -

Description Size 2- Size 2- Size Size Size C- Size C- Size c-

- ~

1 Spanner 22mm 1 27mm 1 27mm 27mm 27mm 1 27mm 1 32mm 1

2 Spanner 24mm 32mm 1 30mm 1 30mm 32mm 1 32mm I 36mm 1

3 Spanner 27mm 1 - 32mm 1 - -

32mm 36mm 1

4 Impact Spanner - - - - - -
41mm 1

5 Wrench - - - - - -
22mm 1

6 Monkey Wrench 200mm 1 200mm 1 200mm 1 200mm 200mm 1 200m 1 200mm 1

7 Hammer #1 I #l 1 #l 1 #I #1 1 #l 1 #1 1

8 Hexagon Wrench 8mm 1 8mm 1 8mm 1 8mm 8mm 1 1Omm 1 -

9 Eyebolt M8 2 M8 2 M8 L M12 M12 2 M12 2 MI2 2

10 Eyebolt - - - M8 - -
M8 I

11 Hex Bolt - - - - - -
M8 2

12 Chisel pin remover 7mm 1 7mm 1 9.5mm 1 9.5mm 9.5mm 1 9.5mm 1 9.5mm 1

13 Hose plug PF3/8 2 PFln 2 PF1/2 z PF1/2 PF1/2 2 PF 1/2 2 PF3/4 2

14 Adapter plug PF3/8 2 PFln 2 PF1/2 z PF 1/2 PF112 2 PF 1/2 2 PF3/4 2

15 Retainer pin Stopper Plug - - - - - 1 1

16 Seal Tape I I I 1 1 1

17 Tool Box ! ! I I I 1

- - - - - -

49
 ~~

TNB-6E TNB-6.5E TNB -7E TNB - 14E

No. - ~ ~ -

-
Description Size
~
Qh Size Q’ty
-
Size
-
Q’ty Size Q’ty
~

1 Spanner 36mm 1 19mm 1 19mm 1 24mm 1

2 Spanner 41mm 1 36mm 1 36mm 1 41mm 1

3 Spanner - 41mm 1 41mm 1 S0mm 1

4 Impact Spanner 41mm 1 46mm 1 55mm 1 60mm 1

5 Impact Spanner 46mm 1 - -

70mm 1

6 Ring Spanner 27mm 1 27mm 1 27mm 1 32mm 1

7 Monkey Wrench 200mm 1 200mm 1 250mm 1 2SOmm 1

8 Hammer #l 1 #l 1 #2 1 #2 1

9 Eye Bolt M12 2 M20 2 M20 2 M20 2

10 Hex Bolt M8 2 M8 2 M8 2 M10 2

11 Chisel Pin ,.mover 9.Smm 1 9.5mm 1 15.8mm 1 15.8mm 1

12 Hose Plug PF3/4 2 PF3/4 2 PF3/4 2 PF 1 2

13 Adapter Plug PF3/4 2 PF3/4 2 PF3/4 2 PF 1 2

14 Retainer Pin Stopper Plug 1 1 1 1

1s Seal Tape 1 1 1 1

16 rwi ~0~ 1 1 1 1

- - - - -

50
__
1

5
Description

Spanner

Spanner

Spanner

Impact Spanner

Impact Spanner
TNB-100

Size

19mm

36mm

41mm

55mm

-
-
4-
1

1
TNB-150

Size

24mm

41mm

50mm

60mm

70mm
-
rb
-

1
TNB-160

Size

24mm

41mm

S0mm

60mm

70mm
-

h
-

1
TNB - 190

Size

24mm

41mm

50mm

65mm

75mm
-

(4
-

1
I'NB-220.230

Size

30mm

41mm

50mm

75mm

80mm
-

Yty
-

1
TNB-310

Size

36mm

50mm

55mm

75mm

80mm
)'ty

1
I TNB-400 -
Size

36mm

50mm

55mm

90mm

-
!b
-

6 Ring Spanner 32mm 1 32mm 1 - - - - -

7 Socket - - 41mm 1 41mm 1 41mm 1 46mm 1 46mm 1

8 Monkey Wrench 250mm 1 250mm 1 300mm 1 300mm 1 300mm 1 300mm 1 300mm 1

9 Hammer #2 1 #2 1 #2 1 #2 1 #2 1 #2 1 #2 1

10 EyeBolt M20 2 M20 2 M24 2 M24 2 M24 2 M30 2 M30 2

11 HexBolt MI0 2 M10 2 M12 2 MI2 2 MI2 2 M16 2 M16 2

12 Chisel Pin Remover 12.8mm 1 15.8mm 1 15.8mm 1 15.8mm 1 15.8mm 1 58mm 1 15.8mm 1

13 Hose Plug PF3/4 2 PF1 2 PFl 2 PFl 2 PF1 2 PF1-1/4 2 PF1-1/4 2

14 Adapter Plug PF3/4 2 PFI 2 PF 1 2 PF1 2 PFl 2 PFl -114 2 PF1-1/4 2

15 Retainer Pin StopperPlug 1 1 1 I 1 1 1

16 SealTape 1 1 1 1 1 1 1

17 Tool Box 1 1 1 1 1 1 1

- - - - - -

51
(22) OPTIONAL, TOOL

List For Optional Tool

~~

Description Quantity Remark

1 41-51-86-91A Gas Pressure Gauge 2MPa 1

2 18-21 -27-208 Add. Socket 1
3 18-17-V2 -050 Add. Hose 1
4 41-51-41-92A Filling Adaptor 1

I 5 1 13-72-06-020 1 NitrogenGasHose I l l
I 6 1 13-55-06-006 I PressureRegulator I 1
7 13-75-06-010 Nitrogen Gas Cylinder 1
8 13-75-07-360 Tool Box 1
I 9 I 13-75-06-031 I OilFlowMeter 1
10 13-75- 06- 032 Pressure Gauge 35MPa 1

52
(23) AUTHORIZED DISTRIBUTORS RECORD

23-1 LOCATION OF SERIAL NUMBER ON THE HYDRAULIC BREAKER.

The serial number is located at the lower point

of the cylinder below the control valve,
or at the upper point of the hose adaptor.

23-2 AUTHORIZED DISTRIBUTORS RECORD

Model TNB- Distributor
Address

Serial Number

Delivery Date

Tel;

53