User Guide

EXEDY Globalparts Corporation • 800.346.6091 • www.exedyusa.com
EXEDY Globalparts Corporation • 800.346.6091 • www.exedyusa.com
3534
Malfunctions of Clutch Pressure Plate Cover Assemblies Malfunctions of Clutch Pressure Plate Cover Assemblies
PROBLEM: Excessive wear on diaphragm tips.
SYMPTOM: Dicult to disengage gear/ Noisy clutch.
CAUSE: 1. Misalignment between the axis of release
bearing and clutch cover causes this problem.
Wear on the fulcrum inside of clutch cover along
with the wear on lever tips makes less pressure
plate lift, results in dicult to disengage gear.
2. Improper direction of release bearing causes
one of abnormal wear.
SOLUTION: 1. Replace the deteriorated bearing or bush
parts. Reinstall a transmission after removal of
contamination or scratch on the mating surface
of bell housing. Replace the deteriorated release
bearing and front cover.
2. Install a release bearing in correct direction.
PROBLEM: Burst pressure plate casting.
SYMPTOM: No disengagement.
CAUSE: 1. Over revving of engine that has exceeded
vehicle manufacturer’s specications.
2. Over heating of casting due to constant
abuse of clutch. The main spring has weakened
through extreme inuence of heat.
3. Inferior part manufacture.
SOLUTION: 1. Driver education.
2. Do not use EXEDY/Daikin covers where engine
has been modied to excess manufacturer’s RPM
specications.
3. Use EXEDY/Daikin specied sports clutch.
Refer to EXEDY/Daikin Catalog or EXEDY/Daikin
Sports Listings where covers are manufactured
with nodular iron castings.
PROBLEM: Excessively worn diaphragm ngers.
SYMPTOM: Pedal graunch sometimes described as erratic
feeling when depressing clutch pedal with
engine running but OK when not running/notchy
clutch pedal.
CAUSE: 1. Eccentricity between the axis of rotation of the
clutch cover pressure plate assembly and that of
the clutch thrust bearing.
2. Inferior clutch thrust bearing (not self
centering type).
3. Worn release bearing sleeve carrier or clutch
fork.
4. Lack of free travel.
SOLUTION: 1. Refer misalignment tips.
2. Fit proper self centering bearing.
3. Rectify release mechanism and align.
4. Adjust free travel to manufacturer’s
specication.
PROBLEM: Diaphragm fouled on clutch disc. Crashing in
gear and unable to obtain clutch adjustment.
SYMPTOM: Dicult to engage/disengage gear.
CAUSE: 1. Flywheel depth or step incorrect.
2. Clutch thrust bearing fallen o quill end/gear
box nose cone slide.
3. Clutch disc too thick.
4. Incorrectly adjusted (overthrow of clutch
mechanism).
SOLUTION: 1. Check ywheel depth or step height.
2. Check for wear on release bearing quill shaft/
gear box nose clone slide.
3. Check clutch disc thickness.
4. Refer to clutch adjustment procedure or
replace cable.
1) Excessive wear on diaphragm tips
2) Excessive wear on diaphragm tips