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TROUBLESHOOTING
150
3.7.6.2 FRAME
3.7.6.3 ENGINE
TROUBLE CAUSE SOLUTION
Travel speed, swing, boom, arm,
bucket slow.
No hydraulic oil. Restore level. See "CHECKS TO BE
CARRIED OUT BEFORE
STARTING THE ENGINE".
Pump does not work correctly.
Foreign body in the hydraulic tank
filter.
Clean. See "Every 2000 hours OF
OPERATION".
Hydraulic oil temperature increases
excessively.
No hydraulic oil.
Fan belt slack.
Radiator or exchanger fins clogged.
Restore level.
See
"CHECKS TO BE
CARRIED OUT BEFORE STARTING
THE ENGINE".
Adjust fan belt tension. See "EVERY
500 HOURS OF OPERATION".
Clean or repair.
See
“EVERY 500
HOURS OF OPERATION”.
Tracks come off.
Slack tracks. Adjust track tension. See “WHEN
REQUIRED”.
Sprocket excessively worn.
TROUBLE CAUSE SOLUTION
Engine oil pressure warning light
comes on.
Oil level in oil pan too low (air
sucked in).
Oil filter clogged.
Oil leakage due to damage or
incorrect tightening of oil pipes or
joints.
Engine oil pressure sensor faulty.
Restore level. See "CHECKS TO BE
CARRIED OUT BEFORE
STARTING THE ENGINE".
Replace cartridge.
See "Every 500 hours OF
OPERATION".
(•) Check and repair.
(•) Change.
Steam comes out of radiator top
(pressure valve).
Fluid level low, fluid leakages.
Fan belt slack.
Mud or limestone accumulated in
cooling system.
Radiator fins damaged or closed.
Faulty thermostat.
Radiator cap loose (work at
considerable heights).
Fluid level sensor faulty.
Add fluid, repair. See "CHECKS TO
BE CARRIED OUT BEFORE
STARTING THE ENGINE".
Adjust fan belt tension. See "EVERY
500 HOURS OF OPERATION".
Change fluid and clean cooling
system. See "WHEN REQUIRED"
Clean or repair. See "EVERY 500
HOURS OF OPERATION".
(•) Change.
Tighten cap or change unit.
(•) Change.
Engine coolant temperature warning
light comes on.
152


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