Subaru Legacy 2002 Service Manual page 1768

Symptom
4. Noisy clutch
Examine whether the noise is generated
when the clutch is disengaged, engaged,
or partially engaged.
5. Clutch grabs.
When starting the vehicle with the clutch
partially engaged, the clutch engages
suddenly and the vehicle jumps instead
of making a smooth start.
2. CLUTCH PEDAL
Insufficient pedal play
Clutch pedal free play insufficient
Excessively worn and damaged pedal shaft and/or bushing
3. DIAGNOSTIC DIAGRAM OF CLUTCH DRAG
No.
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.
With the engine idling, disengage the clutch
and shift quickly (between 0.5 to 1.0 s) from
neutral to reverse.
3 CHECK GEAR NOISE.
With the engine idling, disengage the clutch
and shift quickly (between 0.5 to 1.0 s) from
neutral to reverse shift repeatedly between
neutral and reverse with clutch disengaged.
GENERAL DIAGNOSTIC TABLE
(a) Broken, worn or unlubricated release
bearing
(b) Insufficient lubrication of pilot bearing Apply grease.
(c) Loose clutch disc hub
(d) Loose torsion spring retainer
(e) Deteriorated or broken torsion spring
(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 torsion spring
(e) Loose engine mounting
(f) Deteriorated diaphragm spring
S504257A1003
Trouble
Step
Possible cause
Adjust pedal play.
Adjust pedal free play.
Replace bushing and/or shaft with new one.
S504257A1001
Check
Is an abnormal noise heard
from the transmission
gears?
Is an abnormal noise heard
from the transmission
gears?
Is an abnormal noise heard
from the transmission
gears?
CL-35
Clutch System
Corrective
Replace release bearing.
Replace clutch disc.
Replace clutch disc.
Replace clutch disc.
Replace clutch disc.
Replace clutch disc.
Take off rust, apply grease or replace
clutch disc or main shaft.
Replace clutch disc.
Retighten or replace mounting.
Replace.
Corrective action
Yes
Go to step 2. Clutch is normal.
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.
Clutch is not dis- Clutch disc and
engaged properly. flywheel are
Inspect clutch locked together.
disc, clutch cover, Inspect clutch disc
clutch release and clutch disc
system, and hub spline.
clutch pedal free
play.
No