Isuzu Trooper 1999 Workshop Manual page 1610

CLUTCH
7C–6
Diagnosis
Dragging
Slipping
Chattering
Noisy
Replace driven plate.
Fluid leakage.
Air in hydraulic line.
Master cylinder and slave cylinder
seals worn.
Driven plate warped.
Diaphragm spring weakened or tip of
fingers worn.
Driven plate sticking on splines.
Clutch spline worn.
Release bearing worn or damaged.
Driven plate facing worn or oil
soaked.
Diaphragm spring weakened.
Pressure plate or flywheel warped.
Master cylinder and slave cylinder
seals worn.
Engine mounts loose or damaged.
Driven plate facing warped.
Surface of facing hardened.
Driven plate facing oil soaked.
Damper springs weakened
broken.
Pressure plate or flywheel warped.
Replace bearing binding.
Replace bearing worn or damaged.
Release bearing poorly lubricated.
Pilot bearing worn.
Damper springs weakened
broken.
Rivets of driven plate exposed.
Hydraulic line blocked.
Master or slave cylinders binding.
Repair
Bleed
Replace seals.
Replace driven plate.
Replace pressure plate
Lubricate with grease or replace.
Repair
Replace release bearing.
Replace driven plate and check for
leaks.
Replace pressure plate.
Correct or replace.
Replace seals.
Tighten or replace.
Replace driven plate.
Replace driven plate
Replace driven plate and check for
leaks.
or Replace.
Correct or replace.
Correct, or replace if damaged, and
lubricate.
Replace release bearing.
Lubricate.
Replace pilot bearing.
or Replace driven plate.
Replace driven plate.
Clean out or replace.
Repair or replace as needed.