Engine Clutch
CLUTCH SLIPPAGE
CAUSE REMEDY
Insufficient clutch pedal free play Adjust release bearing position, then adjust
linkage if necessary
Damaged cable Replace cable
Linkage blocked from complete return Remove blockage
Linkage needs lubrication Lubricate linkage
Release bearing locknut loose Adjust release bearing length and tighten
locknut
Worn clutch disc facings Replace clutch disc
Worn or damaged flywheel Resurface or replace flywheel
Worn or damaged clutch pressure plate Replace pressure plate and cover assembly
Grease or oil contamination on facings Clean facings and repair cause of
contamination. If contaminant cannot be
removed, replace clutch disc.
New clutch installation needs break-in Perform clutch break-in procedure
CLUTCH DRAG/HARD SHIFTING
CAUSE REMEDY
Linkage blocked from full travel Remove blockage
Linkage incorrectly adjusted Adjust clutch linkage
Linkage worn/damaged Replace faulty linkage components
Clutch damaged - damaged clutch disc hub
splines - bent clutch disc - bent drive straps
- broken/warped pressure plate
Replace damaged component
Contamination/grease in release bearing bore Clean release bearing bore and transmission
input shaft
Excessive side loading on release bearing Eliminate source of excessive side loading
(worn/damaged cross shaft bushings, worn/
damaged cross shaft, worn/damaged or
bent release yoke tips, worn/damaged or
uneven release bearing yoke contact wear
pads, excessive release bearing travel
during disengagement, worn/damaged pilot
bearing, excessive flywheel runout,
excessive engine to transmission
misalignment, etc.).
T300-1_T500-1_T780
Troubleshooting
400 P/N 12261-683
REVISED: January 2015
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