Operation Manual
82
Chapter VI Common Faults and Solutions
Faults Features
Causes
Solutions
Started diesel engine
does not work
1.
No gear is engaged
2.
Transmission oil level is too
low
3.
The brake lever of gearshift
control lever valve can mot return
to the original position
4.
Transmission oil pump is
damaged or oil seal leakage
occurs
5.
Oil suction of oil pump is
unsmooth
1.
Engage a gear again and readjust
the gearshift control lever
2.
Add oil to the specified level
3.
Find out the cause of failure to
remove it
4.
Replace oil pump or oil seal
5.
Check oil suction pipe for failure
Insufficient
driving
power
1.
Low oil pressure at torque
converter outlet, and pressure
adjustment failure
2.
Low engine speed
3.
Clutch slipping
4.
Too high oil temperature of
torque converter
Check the transmission oil level, and
clean oil filters at oil pan and oil outlet
Check the diesel engine speed according
to the item “Check of oil pressure and
temperature for torque converter”.
Check clutch oil pressure and piston oil
seal
Stop to cool the loader when the oil
temperature of torque converter is above
120
℃
Too low shift pressure
1.
Malfunction of relief valve
set
2.
Oil filter block
3.
Oil pump malfunction
4.
Severe oil leaking at clutch
oil seal
1.
Find out the causes to overhaul
2.
Clean the oil filter
3.
Replace the oil pump
4.
Replace the oil seal
Higher transmission oil
level
1.
Oil leakage at steering pump
shaft end
2.
Oil leakage at working pump
shaft end in the working hydraulic
system
1.
Replace the oil seal of steering pump
shaft end
2.
Replace the oil seal of working pump
shaft end
Too high oil temperature
of torque converter
1.
Too
high
or
too
low
transmission oil level
2.
Clutch slipping
3.
Filter block
4.
Unsmooth oil suction of
transmission pump
5.
Damaged
transmission
pump and insufficient oil supply
6.
Blockage at oil cooler
1.
Add oil to the specified level
2.
Check the oil pressure of clutch
3.
Clean the transmission oil strainer
and oil filter
4.
Check whether the oil suction hose
of transmission pump is sucked flat or
blocked
5.
Check the transmission pump for
abnormal inner leaking quantity and
