User Guide
EXEDY Globalparts Corporation • 800.346.6091 • www.exedyusa.com
EXEDY Globalparts Corporation • 800.346.6091 • www.exedyusa.com
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Malfunctions of Clutch Pressure Plate Cover Assemblies
Malfunctions of Clutch Pressure Plate Cover Assemblies
PROBLEM:
1. Vehicle vibrates/shakes when clutch is being
released, at take o.
SYMPTOM:
Clutch shudder/judder/chattering.
CAUSE:
1. Flywheel not even/warped.
2. Deep scoring indentations from previous worn
clutch.
SOLUTION:
Always resurface ywheel before installing new
clutch. Refer to gure below.
Belled out surface might look smooth but uneven
50%
25%
PROBLEM:
Highly glazed to a mirror nish
pressure plate cover assembly
casting/red dust on clutch
components.
SYMPTOM:
Shuddering/juddering clutch.
CAUSE:
1. Installation error/misalignment
(refer to misalignment tips).
2. Inferior clutch facings.
3. Diaphragm spring load not to
specication.
SOLUTION:
1. Replace complete clutch and
pilot (spigot) bearings.
2. Avoid misalignment on
installation.
PROBLEM:
No clutch adjustment (diaphragm over centre/
clutch disc side plate fouling).
SYMPTOM:
1. Diaphragm over centre when bolting clutch
cover pressure plate assembly to ywheel.
2. Clutch disc side plate fouls on I.D. of casting.
CAUSE:
Careless mechanical tting practices.
SOLUTION:
Always mate clutch disc to pressure plate
casting and ywheel. Ensure no fouling
occurs before installing new clutch.
PROBLEM:
Worn clutch disc facing bres and dirt lodged between
diaphragm spring and clutch cover housing causing loss
of clamp load.
SYMPTOM:
Slipping clutch and clutch drag.
CAUSE:
1. Bell housing not degreased and cleaned. Careless
installation of new clutch.
The new clutch disc has not worn but the bres that
have become lodged in the new clutch cover are that
of the previously worn clutch. It is a requirement due
to ventilation designs that the bell housing area be free
from old bres, dirt and grease when installing new
clutch.
2. This problem is common in 4 wheel drive vehicles when an inspection cover or a clutch fork
cover boot has not been replaced when installing a new clutch.
SOLUTION:
1. Ensure bell housing is thoroughly degreased and clean of dirt and bres before installing
new clutch.
2. Ensure inspection locations and boots are replaced, tightened and well located.
Note: These problems are common on farm vehicles, vehicles travelling on sand and 4x4 recreational
vehicles.
PROBLEM:
1. Installation assist clips not removed.
2. Slipping clutch/excessive free travel.
3. Unable to adjust.
4. Will not transmit power.
SYMPTOM:
Clutch slipping just after installing new clutch.
CAUSE:
Clutch cover pressure plate assembly hold down
clips, to assist ease of installation, have not been
removed.
SOLUTION:
Remove clips after installation.