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 TM 10-3930-644-14&P
G. MAST HYDRAULIC SYSTEM (CONT)
TROUBLE
PROBABLE CAUSE
POSSIBLE SOLUTION
Lift and tilt too
Engine speed governed too low.
Inspect governor controls and adjustments
slow.
Excessive leakage at cylinder
Repair or replace packing.
packing.
Air leaks min system.
Tighten all connections.
Misalignment.
Check masts carriage or tilt linkage for
cause of binding.
Faulty relief valve.
Check for worn or damaged parts. Repair or
replace. Check relief valve setting.
Load creeps-
Internal leakage In cylinders.
Repair or replace packing.
tilting or
lowering.
Oil leak at packing glands.
Repair or replace packing.
Leaks in oil lines.
Tighten all connections or replace damaged
lines.
Oil over-
Relief valve set coo high.
Valve should be set as recommended.
H. POWER SHIFT TRANSMISSION
TROUBLE
PROBABLE CAUSE
POSSIBLE SOLUTION
Transmission
Improperly adjusted or disco-
Adjust or reconnect shifting linkage.
won't shift into
necked linkage.
gear/out of
gear.
Transmission overheated.
Check fluid level; refill to proper level If low.
Check for leaks. Check specified operating
pressures.
Defective pump.
Repair or replace as necessary.
Defective control valve.
Repair or replace as necessary.
Transmission is
Parking brake not released.
Release parking brake: check parking brake
sluggish/jerky.
drum for any possible damage.
Fluid level low.
Check fluid level; refill to recommended ca-
pacity if necessary.
Faulty or worn components.
Check torque converter operation. pump.
clutch-pack, control valve. Check the specified
operating pressures. Repair or replace any
defective parts.
Transmission
Linkage improperly adjusted.
Adjust shifting linkage.
does not shift
smoothly.
Fluid level low.
Check fluid level; refill to recommended level
if necessary.
Malfunctioning control valve.
Verity proper operation of control valve; re-
pair, adjust or replace if necessary.
2-113
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