11.

AUTO GREASE LUBRICATION SYSTEMS

SECTION 11

AUTO LUBRICATING SYSTEM

1. GENERAL
1-1. CONSTRUCTION AND OPERATION METHOD ............................................................. 3
1-2. SPECIFICATIONS ............................................................................................................. 3
1-3. GEAR PUMP..................................................................................................................... 5
1-4. CONTROL UNIT ............................................................................................................... 7
1-5. DISTRIBUTOR .................................................................................................................. 9
1-6. PRESSURE SWITCH ..................................................................................................... 10
1-7. SIGNAL LAMP ................................................................................................................ 11
1-8. PLASTIC TUBE .............................................................................................................. 11

2. INSPECTION AND MAINTENANCE

2-1. INSPECTION AND MAINTENANCE ............................................................................... 12
2-2. CHECK ITEMS FOR COMPONENTS ............................................................................ 15
2-3. GREASING POINTS ....................................................................................................... 16

3. TROUBLESHOOTING
3-1. TROUBLESHOOTING .................................................................................................... 20
3-2. CAUTIONS ...................................................................................................................... 21

1
11. AUTO GREASE LUBRICATION SYSTEMS

2
 11. AUTO GREASE LUBRICATION SYSTEMS

1. GENERAL
Heavy trucks have need of auto grease lubrication systems. One pump supplies a large number of
friction points with lubricant via a system of lines and feeders/ distributors.

1-1. CONSTRUCTION AND OPERATION METHOD

CIRCUIT DIAGRAM

AU0010

1. Gear pump 4. Pressure switch

2. Distributor 5. Main line
3. Control unit 6. 2nd line

1-2. SPECIFICATIONS
KFU-2 3
Model (KHG1-4) Pumping capacity(25°C 40bar) 140cm / min

Motor operating voltage 24v Permissible operating temperature -25°C~+75°C

38 +2
Fill capacity 2.7L Max. back pressure (40)-3 bar
Electrically-operated
Lubricant NLGI 000.00 Function
gear pump unit.

3
11. AUTO GREASE LUBRICATION SYSTEMS

INSTALLATION VIEW

2
3 4

6 5
1. Control unit
2. Fuse box
3. Distributor
4. Gear pump unit
5. Starter switch
6. Signal lamp

AU0011

FUNCTIONS OF THE COMPONENTS

1. Control unit
This unit is an electronic device designed to monitor troubles within the system and to control the opera-
tion. Care should be taken so that water or moisture may not penetrate the inside of the system. When
the key switch is turned to “ON” to start the pump, the signal lamp is turned on for about 3 seconds. If the
signal lamp indicates a trouble during the operation of the system, or if the signal lamp would not be
turned off 3 seconds after the key switch is turned to “ON”, it is necessary to check the unit for a trouble.
• Pressure switch
The pressure switch is installed to the distributor located farther from the pump. The signal lamp comes
on when the residual pressure within the line is 25±2.5bar(having a function of checking the pump and
grease line for leakage)
3. Distributor
After the gear pump operation is stopped, this distributor feeds grease supplied from the gear pump
to each greasing port at pressure of 5bar.
- Types of nipple vary from port to port(0.1, 0.2, 0.4, 0.6cc)
NOTE) Should you have any trouble with your auto lubricating system, contact immediately your nearest
Daewoo dealer or the manufacturer’s A/S Division.
4. Gear pump unit
This operates at a high pressure(38bar) for 154 seconds and supply the oil for the distributor through the
main line.
- Lubrication cycle: 0.5 ~ 11 hours
- Manual operation is possible, but once the unit is operated manually, it does not operate again within
5 minutes.
• Grease replenishment intervals
Specified grease: NLGI GRADE 000.00
- Refill up to MAX. line of the grease tank every 2 months.
- When injecting grease, use care to prevent foreign substances from entering the tank.

4
 11. AUTO GREASE LUBRICATION SYSTEMS

1-3. GEAR PUMP

1) Gear pump is driven by the power generated using the key switch and feeds grease at a high
pressure(38bar) to the distributor through the main line.
2) The grease which has filled up the distributor loses pressure simultaneously with the stoppage of
pump operation.(13.5bar)
3) The check valve is actuated and feeds the pre-programmed amount of grease to each greasing
port through the lead line.(2nd line)
4) Lubrication cycle(0.5~11 hours) and pump operation time are controlled in accordance with the
data inputted in the control unit.

Gear pump

Filler socket

Overfill
preventer
Connection port lock system
for main line to
system

Pressure relief valve

Pressure regulating
valve
Transparent grease tank

Gear pump circuit diagram

Filler socket
Main line to system

Pressure regulating
valve Pressure relief valve

AU0020

5
11. AUTO GREASE LUBRICATION SYSTEMS

• Operation
The gear pump continuously supplies grease for the piston distributor through the main line network
during the pump operation time. After the completion of the pump operation(i.e. Interval time begins
simultaneously.), the pressure relief valve within the unit is opened, and the pressure within the main
line is relieved through this valve.
There after, residual pressure remains within the main line and the pressure ratings at this time are
approx. 0.2~1.0bar.
When the pressure within the main line is almost relieved, the distributor which has received grease
from the pump changes its function into distributing the grease to each greasing port.
(A given amount of grease is supplied for the spring chamber within the piston distributor.)

• Pressure curve within the main line

Maximum pressure inside the main line is obtained at the front portion of the pressure regulating
valve of the gear pump.

Lubrication pressure in main line

Lubrication cycle(Work cycle time)

Max. 38bar
Time

Start of feeding by distributor

Pressure Pressure Pressure

build-up retention relief Time
time time time Residual pressure of 0.2 ~ 1bar

Feeding time of
distributor

Pump operation time Interval time(0.5 ~ 11 hour)

(154 seconds)

AU0030

• Auto adjustment
The gear pump operates in compliance with the lubrication cycles as pre-adjusted on the control unit.
The signal lamp continues on for 42 seconds simultaneously with the starting of the pump operation.
If the main line fails to receive the required pressure, the signal lamp keeps lighting up even during
the interval time. When the battery main switch is turned to OFF, the signal lamp also is turned off.
When the trouble has identified and corrected, normal pressure is supplied and the signal lamp re-
sumes normal operation and then turns off again.

6
 11. AUTO GREASE LUBRICATION SYSTEMS

1-4. CONTROL UNIT

1-4-a. FUNCTIONS
The IG 433-5-51 (KV433-5-51) electronic control unit is used for the time-dependent control and monitoring
of pneumatically operated centralized lubrication systems in utility vehicles.

1-4-b. SPECIFICATIONS
IG433-5-51
Model (KV433-5-51) Operating voltage 24v
0.5~11 hours
Pump operation time (T1) 154 seconds Interval time(T2) (0.5~24 hours)
Exterior(KV type) Wiring diagram(KV type)

Control unit
Pressure
switch Motor M

Cable harness

Battery Fuse 1

MANUAL : Manual operation push switch Signal lamp

: Operation time control
: Pump operation time

Normal operating cycles Wiring diagram(KV type)

DS 15 30
M SL 31
T1 T2 T2+T3

ON Off
Cycles
T3 DS M SL
max
Ignition 4W

Pump and Z
motor F2 F1
Signal lamp
SL B+

Pressure
switch DS 15: Battery (IGNITION)
DS: Pressure switch
SL: Signal lamp
T1= Pump operation time M: Motor pump
T2=Interval time F: Fuse
T3=Ignition off

AU0040

7
11. AUTO GREASE LUBRICATION SYSTEMS

1-4-c. OPERATION
When the main switch is turned on after connecting the electronic control unit to the power source,
the cycle of interval time continues repeatedly and the pump stops its operation. Check to see if the
power lamp and signal lamp are turned on at the same time as the key switch is turned to “ON”. (At
this time the signal lamp goes out automatically in 3 seconds.)
• Check to see if, on the moment the manual switch is pressed, the pump is actuated and the motor
lamp comes on.
• Normally, the pressure of 38bar generated 154 seconds after the pump begins its operation ac-
tuates the pressure lamp to come on, and the pump completes its operation 154 seconds after it
begins its operation.
• Check to see if the lubrication time has been set as desired.

1-4-d. MANUAL OPERATION METHOD

Pressing the manual operation switch(DK) installed on the flank of the unit will enable manual lubri-
cating operation. At this time, if the manual operation switch is actuated, the interval time stored in
the memory is set back to “ZERO(0)”.

8
 11. AUTO GREASE LUBRICATION SYSTEMS

1-5. DISTRIBUTOR
1-5-a. FUNCTIONS
The distributor receives grease from the pump and send it back to each greasing point via its outlet port.
Metered quantities of distributors : 0.1, 0.2, 0.4 and 1.0cm
Depending on tubing layout : 2.4 and 6port distributors

1-5-b. SPECIFICATIONS

VKR2, VKR4, VKR6

Model and kind (KHD2000,KHD4000,KHD6000) Kinds of metering nipple 0.1, 0.2, 0.4cc

Exterior Metering nipples

0.1 0.2 0.4

Operation

Metering nipple

Piston spring
Piston
O-ring Adapter

Main line
To lubrication
point

Support ring and

check valve Valve clearance
Valve spring
A: Distributor in non- B: Distributor which is C: Distributor which begins to supply
pressurized state actuated with the main grease for the greasing points with the
line pressurized by the pressure relieved from the main line
pump
AU0050

9
11. AUTO GREASE LUBRICATION SYSTEMS

1-5-c. OPERATION
When the pump completes its operation, a given amount of grease which has been temporarily stored
in the chamber is distributed to each greasing port through the outlet port(2nd line connected to the
distributor, i.e. lead line) by the tension of the piston spring mounted in the distributor. Lubrication is
made possible only by the tension of the spring upon the completion of the pump operation.
When the pressure relief valve is opened, the pressure within the main line drops. The moment the
pressure within the main line drops, the change-over valve, i.e. check valve, is opened and discharges
grease. (opened to the main line)
• The pressure required to fill the chamber is at max. 37bar.
• The pressure required to supply grease for each greasing point by the piston spring is at 13.5bar.
• The main capacity of the metering nipples can be identified by the code No. and type of nipple.
• When changing a metering nipple, adjust the grease feed accordingly.

1-6. PRESSURE SWITCH

1-6-a. FUNCTIONS
The pressure switch changes over the pressure generated by the pump to electrical signal and trans-
mits to the signal lamp or control unit the information that the pressure required for CLS reaches the
desired level. This switch also monitors the functions of the system itself.

1-6-b. SPECIFICATIONS
25+2.5bar
Model DS-E 25/S1(K20) Operating pressure (20+2bar)
_
Rated voltage and capacity 24v, 130W Operating temperature -25°C ~ +130°C
Exterior Wiring diagram
Control unit
M10 X1

≈ 24
≈ 51 Pressure
switch Motor M
M27X1
M27X1
E25

ø30

Cable harness
40

Battery Fuse 1
9 SW27 11

Signal lamp
ø4
AU0060

1-6-c. OPERATION
The pressure switch changes over the pressure generated by the pump to electrical signal and transmits
to the signal lamp or control unit the information that the pressure required for CLS reaches the desired
level. This switch also monitors the functions of the system itself. The switch is actuated at 25bar as a
basic point. When the pressure within the system(main line and distributor) drops below 25bar, the signal
lamp continues on to detect that grease coming from the gear pump has not been filled in the main line
and distributor.
When grease remains below MIN line in the pump, the minimum pressure of 25bar required within the
CLS cannot be generated. At this time, the pressure switch actuates the signal lamp and control unit to
detect a trouble.
When it is impossible to eliminate the cause of trouble, turn the key switch to “OFF”(as the interval time
is stored in the memory of the control unit) and then disconnect the connector from the control unit to
stop its operation.

10
 11. AUTO GREASE LUBRICATION SYSTEMS

1-7. SIGNAL LAMP

- Normally, each time the switch key is turned to “ON” regardless of the pump operation, the signal lamp
is lit for 3 seconds and then goes out.
- If the lamp continues on during the operation of the truck, it means that there is a trouble with the system.

1-8. PLASTIC TUBE (MAIN LINE AND 2ND LINE)

1-8-a. FUNCTIONS
The main-line does connect with the pump to distributor, distributor to distributor.
The material WVN 715POLYMID 11(PA11) RHK(PA12) : WVN7150RO 10mm X 1.5cm semi-rigid

1-8-b. SPECIFICATIONS
The 2nd-line does connect with the lubrication point of from piston distributor.
The material WVN 716POLY AMID 11(PA11) & (PA12) : WVN716-RO 4mmx0.85cm

REF. NO da t di Explode pressure Usual pressure

(WVN 715-RO 10mm x 1.5cm) 10 1.5 7 121 BAR 40 BAR
(WVN 716-RO 6mm x 1.25cm) 6 1.25 3.5 106 BAR 35 BAR
(WVN 716-RO 4mm x 0.85cm) 4 0.85 2.3 109 BAR 36 BAR

- da : external diameter, t : thickness, di : internal diamter

da

di

AU0061

MATERIAL Melting point Blaze point

WVN 715-POLYAMID11(PA11) SEMI-RIGID 185°C 176°C
WVN 715-POLYAMID12(PA12) SEMI-RIGID 172°C 160°C
WVN 716-POLYAMID11(PA11) FLEXIBLE 185°C 176°C
WVN 716-POLYAMID12(PA12) FLEXIBLE 172°C 160°C
- Pemmissible operating temprature range : from approx. -40°C ~ + 80°C

11
11. AUTO GREASE LUBRICATION SYSTEMS

2. INSPECTION AND MAINTENANCE

2-1. INSPECTION AND MAINTENANCE
2-1-a. WALK-AROUND INSPECTION

Inspection Check items Remarks

Walk-around • Dash board near the driver’s seat If the lamp continues on,
inspection • Signal lamp it indicates a trouble.

Weekly inspection • Grease level in the pump

• Greasing points
• Grease leakage from or breaks on distributor and its
surroundings, main line and 2nd line

2-1-b. “AS REQUIRED” INSPECTION

• After operating the truck on rough roads, do not forget to check the lines for damage.
• If the chassis was clashed from behind, check the lines and distributor for damage.

2-1-c. SERVICING (TROUBLE AND REPAIR)

1) When the signal lamp continues on

Check items Correction Remarks

Grease level in the • Add if required.
pump If the grease level drops below MIN line, air penetrates Use the specified
the C.L.S. system. This situation makes it impossible grease for C.L.S. and
to fill grease without discharging the air. Therefore, greasing pump.
first unscrew the screw union of the main line, fill the
container with grease and then manually operate the
pump.(Do not re-operate it within 5 minutes)

Main line and • Replace with new ones if damage or grease leakage Use connector if
distributor is found. damage is found on
the lines.

12
 11. AUTO GREASE LUBRICATION SYSTEMS

2) When the C.L.S. acts up

Check items Correction Remarks

Electric cables • Check power supply and connecting state of connec-
tor, and service as necessary.

Control unit • Check for breaks or damage, and replace if necessary.

Gear pump • Replace if it acts up.

Lighting conditions • Check the lighting conditions by circuits of the control

by circuits of the unit(IG 433-5-51, KV433-5-51) to identify defective cir-
control unit cuits.

3) When the entire system has been greased insufficiently

Check items Correction Remarks

Pressure in the • Install a pressure gauge on the main line to check
main line pressures at the times of pressure formation and pres-
sure attenuation. The pressure at formation should
be at least 30bar and residual pressure should be
maximum 1bar.
Ensure that the pressure at formation should be at
least 30bar, then relieve the pressure. At this time,
the pressure should drop quickly(below 10bar). If the
pressure drops slowly, it indicates that there is a
trouble with the pressure relief valve. Replace it with
a new one.

4) When the entire system has been greased excessively or insufficiently

Check items Correction Remarks

Time setting device • Re-adjust
of control unit

5) When each greasing point has been greased excessively or insufficiently

Check items Correction Remarks

Capacity of metering • Adjust the capacity.
nipple of distributor

13
11. AUTO GREASE LUBRICATION SYSTEMS

6) Cautions when servicing

• Always turn the switch to “OFF” when disconnecting or mounting each system of C.L.S.
• Keep clean each part when servicing the main device of C.L.S. Greater care should be taken
especially when replacing the metering nipple.
• Use the specified cleansing oil(benzene or mineral oil) when cleansing parts of the system.
• Absolute cleanliness must be maintained when doing any work on the system, especially when
replacing metering nipples on distributors. Dirt in the system causes malfunctions.
Never use trichloroethylene, perchloroethylene or similar liquides agressive to perbunan(Buna N
materials) when cleaning centralized lubrication systems.

2-1-d. HOW TO RE-CONNECT PLASTIC TUBING(THE MAIN AND 2ND LINES)

1) Re-connect the lines as follows:
1. Line(tube)
2. Reinforcing socket
3. Bushing
4. Cone sleeve
5. Nipple and connector

1 2 3 4 5

AU0070

Assembly
* Assemble 3 and 4, then assemble it with 5(Tighten 3 loosely.). Insert 2 into 1 securely, slide 1 inside
of 5 all the way through 3, then tighten 3 firmly. Caution: When pulling 1 after assembly is completed,
the line 1 should not be slipped off.

2) To correct any trouble with the line, disconnect the bushing 3 from the line, then cut off the damaged
portion of the line.

14
 11. AUTO GREASE LUBRICATION SYSTEMS

2-2. CHECK ITEMS FOR COMPONENTS

Items Complaints Inspection methods Correction
1. Pump • Identify breaks or damage. • Visual inspection • Change
• Does the motor operates • When the manual switch of • Change
normally? the timer is pressed with
the main and key “ON”, if
the pump operates for 154
seconds and delivery
pressure shows 35bar or
more, it means that it is in
normal condition.
• Are the pump and main • Visual inspection to identify • Repair the
line connected correctly? grease leakage from the leakage
connection part of the pump
and the main line
• Does the tank have been • Grease(NLGI 000.00) level • Replenish the
filled with specified should be over MIN mark(If tank with
grease? possible, fill up to the MAX grease
mark.).
• When shaking it with hand,
• Does the pump vibrate? it should not vibrate. • Tighten the bolt

2. Distributor • Is there no grease leakage • Visual inspection • Repair the

from between distributors? leakage
• Is there no grease leakage • Visual inspection • Repair the
from between distributor leakage
and banjo fitting?
• Is there no grease leakage • Visual inspection • Repair the
from between distributor leakage
and main line?
• Is distributor fixed to truck • There must be no shake • Tighten the bolt
body securely? when shaking it with hand.
• Is there no grease leakage • Visual inspection • Repair the
from between distributor leakage
and lead line?

3. Main line • Is main line connected to • No matter how you attempt • Make a circle
and lead nipple securely? to haul at the lead line with from the end of
line hand, it may not be hauled. lead line, then
Also there must be no insert it firmly.
grease leakage.
• Are there bends or holes? • Visual inspection • Repair the main
and read lime
• Do moving parts have • Visual inspection • Use connector
sufficient free play? to give suffi-
cient free play.
• Is the bending made well? • Visual inspection • Carry out
bending opera-
tion at intervals
of 30cm.
• Is the protection for the • Visual inspection • Arrange protec-
system arranged satisfac- tion device for
torily? edges, corners
or heat generat-
ing portions.

15
11. AUTO GREASE LUBRICATION SYSTEMS

Items Complaints Inspection methods Correction

4. Control • Is control unit fixed to truck • There must be no shake • Rebolt
unit body securely? when shaking it with hand

• Is harness arrangement • There must be no twist or • Rearrange

made well? contact othe parts

• Is harness connected • Visual inspection • Reconnect

securely? (There must no cut)

• Does the lamp operates • Visual inspection • Replace

normally? (There must be turn on)

• Identify humidity or con- • Visual inspection • Cleaning

taminated

5. Signal • The lamp will not light up • Visual inspection • Replace lamp
lamp for 3 seconds when the (Time check)
key is turned to "NO"

2-3. GREASING POINTS

2-3-a. 4X2 SERIES

2 4 3 14 9 11 1316 14 18 14 17

Engine Transmission

1 6 5 14 7 8 10 12 15 14 18 14 17
AU0080

1. Bracket support cab sus 7. Drag link(rear) 14. Spring pin(front)

upper(LH) 8. King pin, left, upper 15. Transmission release
2. Bracket support cab sus 9. King pin, right, upper bearing
upper(RH) 10. King pin, left, lower 16. Transmission release
3. Change lever 11. King pin, right, lower bearing
4. 1st relay 12. Tie rod(left) 17. Bracket spring
5. 2nd relay 13. Tie rod(right) 18. Shackle
6. Drag link(front)

16
 11. AUTO GREASE LUBRICATION SYSTEMS

2-3-b. 6X2, 6X4 SERIES

17
2 4 3 14 9 11 13 14 18

Engine Transmission

1 6 5 14 8 7 12 15 14 18 16
10

* 6x2 SERIES : EXCEPT NO.16, 17 AU0090

1. Bracket support cab sus 6. Drag link(front) 13. Tie rod(right)

upper(LH) 7. Drag link(rear) 14. Spring pin(front)
2. Bracket support cab sus 8. King pin, left, upper 15. Transmission release
upper(RH) 9. King pin, right, upper bearing
3. Change lever 10. King pin, left, lower 16. Spring seat(left)
4. 1st relay 11. King pin, right, lower 17. Spring seat(right)
5. 2nd relay 12. Tie rod(left) 18. Shackle

17
11. AUTO GREASE LUBRICATION SYSTEMS

2-3-c. 8X4 SERIES

14 18
2 43 31 21 3839 15 9 2327 40 4119 11 29 25 46 47 33 48 49

1 30 5 6 20 343512 8 22 26 7 36 37 16 10 28 24 42 43 32 44 45
13 17
AU0610

1. Bracket support cab sus(left) 26. Shackle, front, left

2. Bracket support cab sus(right) 27. Shackle, front, right
3. Change lever 28. Shackle, rear, left
4. 1st relay 29. Shackle, rear, right
5. 2nd relay 30. Transmission release bearing
6. Idle arm 31. Transmission release bearing
7. Relay arm 32. Spring seat, left
8. 1st tie rod(left) 33. Spring seat, right
9. 1st tie rod(right) 34. Brake cam shaft, forward front, left
10. 2nd tie rod(left) 35. Slack adjust, forward front, left
11. 2nd tie rod(right) 36. Brake cam shaft, forward rear, left
12. King pin, front left, upper 37. Slack adjust, forward rear, left
13. King pin, front left, lower 38. Brake cam shaft, forward front, right
14. King pin, front right, upper 39. Slack adjust, forward front, right
15. King pin, front right, lower 40. Brake cam shaft, forward rear, right
16. King pin rear left, upper 41. Slack adjust, forward rear, right
17. King pin rear left, lower 42. Brake cam shaft, rearward front, left
18. King pin rear right, upper 43. Slack adjust, rearward front, left
19. King pin rear right, lower 44. Brake cam shaft, rearward rear, left
20. Spring pin front, left 45. Slack adjust, rearward rear, left
21. Spring pin front, right 46. Brake cam shaft, rearward front, right
22. Spring pin, inner left 47. Slack adjust, rearward front, right
23. Spring pin, inner right 48. Brake cam shaft, rearward rear, right
24. Spring pin, rear, left 49. Slack adjust, rearward rear, right
25. Spring pin, rear, right

18
 11. AUTO GREASE LUBRICATION SYSTEMS

2-3-d. 10X4 SERIES (SELF STEER AXLE) CHASSIS GREASING POINT DIAGRAM

5
1 3 6 9

2 4 7 10
8

11 13
12 14

MTC0602

1. Brake cam shaft, right 5. King pin, right upper 9. Tie rod, right 13. Arm support, left
2. Brake cam shaft, left 6. King pin, right lower 10. Tie rod, left 14. Arm support, right
3. Slack adjuster, right 7. King pin, left upper 11. Arm, left
4. Slack adjuster, left 8. King pin, left lower 12. Arm, right

19
11. AUTO GREASE LUBRICATION SYSTEMS

3. TROUBLESHOOTING
3-1. TROUBLESHOOTING
Items Complaints Correction

Pump • Fuse short • Replace broken fuse.

malfunctions • Poor ground cable • Inspect and tighten ground cable.
• Weak delivery pressure (below • Replace pump.
37bar)
* When batteries are dead or weak,
pump cannot produce normal pres-
sure.

Signal lamp keeps • Bad control unit • Replace bad control unit.
lighting up. • No grease supply to pump and stor- • Replenish the tank with grease
age tank
• Damaged main line • Repair main line.
• Bad pressure switch • Replace bad pressure switch
• No pressure produced from pump • Replace pump.
• Damaged check valve inside distributor • Replace distributor.

Bad control unit • Faulty fuse button • Replace control unit.

• Poor automatic sensor • Replace control unit.
• Short-circuit due to moisture • Replace control unit.

Excessive grease • Incorrect operating time of control unit • Reset operating time.
• No proper metering nipple used • Replace metering nipple.
• Trouble with check valve • Replace distributor.

Lack of grease • Incorrect operating time of control unit • Reset operating time.
• Trouble with system itself • Inspect
• No proper metering nipple use • Replace metering nipple.

Timer • It is shaken by hand. • Tighten the bolt the lamp

• The lamp won’t light up for 3 seconds • Replace the lamp
when the key is turned to “ON”.
• When pump operates, pump lamp
won’t light up.
• Foreign substances or moisture are • Relocate the timer.
found.

Signal lamp • The lamp won’t light up for 3 seconds • Replace timer and pump.
when the key is turned to “ON”.
• The lamp keeps lighting up when the • Replace lamp and timer.
system has troubles.

20
 11. AUTO GREASE LUBRICATION SYSTEMS

3-2. CAUTIONS
1) When it is impossible to remove the cause of troubles, first turn off the main switch and disconnect
the terminal from the control unit to stop the function. (The interval time stored in the memory of
control unit is suspended.)
2) Always inject grease into the pump in extremely clean environment. And use the same brand
grease. ( If the grease contains foreign substances or when different brand grease is used, pump
and piston distributor will be damaged.)

Recommended grease : NLGI- viscosity 000.00 liquid grease

21