Subaru Legacy 2004 Service Manual page 2751

CLUTCH SYSTEM
Symptom
5. Clutch grabs.
When starting the vehicle with the clutch
partially engaged, the clutch grabs sud-
denly and the vehicle jumps instead of
making a smooth start.
2. CLUTCH PEDAL
Insufficient pedal play
Insufficient clutch pedal free play
Excessively worn and damaged pedal shaft and/or bushing
3. DIAGNOSTIC DIAGRAM OF CLUTCH DRAG
Step
1 CHECK GEAR NOISE.
1) Start the engine.
2) Disengage the clutch and shift quickly from
neutral to reverse in idling condition.
2 CHECK GEAR NOISE.
Disengage the clutch at idle and shift from neu-
tral to reverse within 0.5 — 1.0 seconds.
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.
General Diagnostic Table
Possible cause
(a) Grease or oil on facing
(b) Deteriorated cushioning spring
(c) Worn or rusted spline of clutch disc or
main shaft
(d) Deteriorated or broken damper spring Replace clutch disc.
(e) Loose engine mounting
(f) Deteriorated diaphragm spring
Trouble
Adjust pedal free play.
Adjust pedal free play.
Replace the bushing and/or shaft with a new one.
Check
Is there any abnormal noise
from the transmission gear?
Is there any abnormal noise
from the transmission gear?
Is there any abnormal noise
from the transmission gear?
CL-34
Corrective action
Replace clutch disc.
Replace clutch disc.
Take off rust, apply grease or replace
clutch disc or main shaft.
Retighten or replace mounting.
Replace.
Corrective action
Yes
Go to step 2. Clutch is normal.
Go to step 3. For defective
transmission or
excessive clutch
drag torque;
inspect the pilot
bearing, clutch
disc, transmission
and clutch disc
hub spline.
Defect in clutch Clutch and fly-
disengaging. wheel seizure.
Inspect clutch disc, Inspect clutch disc,
clutch cover, clutch spline of clutch
release, and clutch disc hub.
pedal free play.
No