Cause
| Action
|
DEFINITION: The clutch grabs, or chatters, or the clutch is unable to release
without the vehicle jerking. An abrupt engagement of the clutch.
Review the
Symptoms - Clutch
and perform
the necessary inspections.
|
Grease or oil contamination on the clutch facings
|
- Repair the cause of the oil leak or grease contamination.
- Clean the clutch facings.
- Replace the clutch components if they will not clean. Refer to
Clutch Assembly Replacement
.
|
Loose or faulty engine mounts
|
- Inspect the engine mounts for being loose or faulty. Refer to
Engine Mount Inspection
in Engine Mechanical - 4.3L
or
Engine Mount Inspection
in Engine Mechanical -
4.8L, 5.3L, and 6.0L or
Engine Mount Inspection
in Engine Mechanical - 8.1L or
Engine Mount Inspection
in Engine Mechanical - 6.6L.
- Repair or replace the engine mounts as required. Refer to
Engine Mount Replacement - Left Side
and
Engine Mount Replacement - Right Side
in Engine Mechanical - 4.3L or
Engine Mount Replacement - Left Side
and
Engine Mount Replacement - Right Side
in Engine Mechanical -
4.8L, 5.3L, and 6.0L or
Engine Mount Replacement - Left Side
and
Engine Mount Replacement - Right Side
in
Engine Mechanical - 8.1L or
Engine Mount Replacement - Left Side
and
Engine Mount Replacement - Right Side
in Engine Mechanical - 6.6L.
|
Clutch pedal sticking
|
- Inspect the clutch pedal for correct operation.
- Replace the clutch pedal if it is faulty. Refer to
Clutch Pedal Replacement
.
|
Clutch actuator binding
|
- Inspect the clutch actuator for the piston seals binding or sticking
in the seal bore.
- Replace the clutch actuator if it is binding. Refer to
Clutch Actuator Cylinder Replacement
.
|
Clutch master cylinder binding
|
- Inspect the clutch master cylinder for the piston binding or sticking
in the cylinder.
- Replace the master cylinder if it is faulty. Refer to
Clutch Master Cylinder Replacement
.
|
Improper clutch installation
|
- Inspect the pressure plate for distortion caused by improperly tightening
the pressure plate bolts.
- Inspect the clutch disc for a bent hub caused by forcing the installation
of the transmission.
- Inspect for the correct clutch disc.
- Inspect the clutch disc for being installed backwards.
- Replace the clutch assembly if it is damaged or the wrong components
were installed. Refer to
Clutch Assembly Replacement
.
|
Clutch disc binding on the input shaft
|
- Inspect the input shaft for rust dirt or debris.
- Clean the input shaft.
- Inspect the clutch disc for a bent hub.
- Replace the clutch assembly if the clutch disc is faulty. Refer to
Clutch Assembly Replacement
.
- Inspect the input shaft for excessive wear on the splines, causing the
clutch disc to bind.
- Replace the transmission input shaft if it is worn. Refer to
Transmission Disassemble
in Manual Transmission -
NV 3500 Unit Repair or
Transmission Disassemble
in Manual Transmission - NV 4500 Unit Repair or
Transmission Disassemble
in Manual Transmission -
ZF S6-650 Unit Repair.
|
Clutch pressure plate damaged
|
- Inspect the pressure plate for bent drive straps caused by improper vehicle
use.
- Replace the clutch assembly if the clutch pressure plate is damaged.
Inform the customer. Refer to
Clutch Assembly Replacement
.
|
Flywheel improperly machined
|
- Inspect the flywheel for being machined, and causing interference with
the clutch disc.
- Replace the flywheel if it has been machined. Refer to
Engine Flywheel Replacement
in Engine Mechanical - 4.3L or
Engine Flywheel Replacement
in Engine Mechanical -
4.8L, 5.3L, and 6.0L or
Engine Flywheel Replacement
in
Engine Mechanical - 8.1L or
Engine Flywheel Replacement
in Engine Mechanical - 6.6L.
|
Flywheel uneven
|
- Inspect the flywheel surface for being warped or uneven.
- Replace the flywheel if it is faulty. Refer to
Engine Flywheel Replacement
in Engine Mechanical - 4.3L or
Engine Flywheel Replacement
in Engine Mechanical -
4.8L, 5.3L, and 6.0L or
Engine Flywheel Replacement
in
Engine Mechanical - 8.1L or
Engine Flywheel Replacement
in Engine Mechanical - 6.6L.
|