Troubles Shooting 6-1
Troubles Shooting
Characteristics of faults
Cause
Remedy
Shifting pressure low for each
position
Oil level too low in gearbox oil pool
Add oil to the specified oil level
Leakage in main oil way
Check main oil way
Gearbox oil filter blocked
Clean or replace variant pump
Variant pump ineffective
Replace working pump
Pressure regulation spring of shifting
manipulation valve improper
Re-adjust according to the regulations
Pressure regulation spring of shifting
manipulation valve ineffective
Replace spring of regulation valve
Shifting manipulation valve, Pressure
regulation valve or accumulator piston
blocked.
Dismantle and eliminate the blocking
phenomenon
Shifting pressure at some
position is low
Seal ring for piston of this position
damaged
Replace seal ring
Leakage in oil way of this position
Locate the leakage point and repair
T o r q u e c o n v e r t e r o i l
temperature Over high
Oil level too low in gearbox oil pool
Add oil to the specified oil level
Shifting pressure low, and clutch
slippage
See I, II
Torque converter radiator blocked
Clean or replace torque converter
Engine speed high
Engine is running, but the
vehicle could not be driven
Torque converter works with high load
for too long time
Stop working for cooling properly
Gear not engaged
Re-push to the proper position, or re-
adjust the control lever system
Pressure regulation spring of shifting
manipulation valve broken
Replace spring of regulation valve
See items 1,2,3,4 in (I)
See items 1,2,3,4 in (I)
Driving force not adequate
Shifting pressure low
See I, II
Torque converter oil temperature too high
See III
Impeller of torque converter damaged
Disassemble torque converter and replace
impeller
Big overrunning clutch damaged
Disassemble big overrunning clutch and
replace damaged parts.
Poor engine output power
Repair the engine
Gearbox oil level increase
Steering pump shaft end mixing oil
Replace oil gland at steering pump shaft
end
Working pump of working hydraulic system
mixing oil
Replace oil gland at working pump shaft
end
TRANSMISSION
Summary of Contents for HL630VL
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Page 61: ...2 10 Operation Controls Schematic Fig 11 ...
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Page 126: ...Inspection Maintenance and Adjustment 4 7 LUBRICATION OIL AND MAINTENANCE CHART Figure 4 ...
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