Subaru 2006 Legacy, Manual

Page: 3673 / 4302

CL-30
General Diagnostic Table
CLUTCH SYSTEM
2. CLUTCH PEDAL
3. DIAGNOSTIC DIAGRAM OF CLUTCH DRAG
4. Noisy clutch
Examine whether the noise is generated
when the clutch is disengaged, engaged,
or partially engaged. (a) Broken, worn or insufficiently lubri-
cated release bearing Replace the release bearing.
(b) Insufficient lubrication of the pilot
bearing Replace the pilot bearing.
(c) Loose clutch disc hub Replace the clutch disc.
(d) Loose damper spring retainer Replace the clutch disc.
(e) Deteriorated or broken damper spring Replace the clutch disc.
5. Clutch grabs suddenly.
When starting the vehicle with the clutch
partially engaged, the clutch engages
suddenly and the vehicle jumps instead
of making a smooth start. (a) Grease or oil on facing Replace the clutch disc.
(b) Deteriorated cushioning spring Replace the clutch disc.
(c) Worn or rusted spline of clutch disc or
main shaft Take off rust, apply grease or replace
clutch disc or main shaft.
(d) Deteriorated or broken damper spring Replace the clutch disc.
(e) Loose engine mounting
Retighten or replace mounting.
(f) Deteriorated diaphragm spring Replace.
Trouble Corrective action
Insufficient pedal play Adjust the free play of the pedal.
Insufficient clutch pedal free play Adjust the free play of the pedal.
Excessively worn and damaged pedal shaft and/or bushing Replace the bushing or shaft with a new part.
Symptom Possible cause Corrective action
Step Check Yes No
1 CHECK GEAR NOISE.
1) Start the engine.
2) Disengage the clutch and shift quickly from
neutral to reverse in idling condition.
Is there any abnormal noise
from the transmission gear? Go to step 2 . Clutch is normal.
2 CHECK GEAR NOISE.
Disengage the clutch at idle and shift from neu-
tral to reverse within 0.5 — 1.0 seconds.
Is there any abnormal noise
from the transmission gear? Go to step
3
. Defective trans-
mission or exces-
sive clutch drag
torque. Inspect
Pilot bearing,
clutch disc, trans-
mission and clutch
disc hub spline.
3 CHECK GEAR NOISE.
1) Disengage the clutch at idle and shift from
neutral to reverse within 0.5 — 1.0 seconds.
2) With the clutch disengaged, shift from neu-
tral to reverse, reverse to neutral several times.
Is there any abnormal noise
from the transmission gear? Inadequate clutch
disengage. Inspect
the clutch disc,
clutch cover, clutch
release, and clutch
pedal free play. Clutch and fly-
wheel seizure.
Inspect the clutch
disc and the spline
of the clutch disc
hub.
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