Subaru Legacy 2003 Service Manual page 2595

CLUTCH SYSTEM
Symptom
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
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
Trouble
Step
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 torsion
spring
(e) Loose engine mounting
(f) Deteriorated diaphragm
spring
Adjust pedal play.
Adjust pedal free play.
Replace bushing and/or shaft with new one.
Value
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-42
Corrective
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 fly-
engaged properly. wheel are locked
Inspect clutch together. Inspect
disc, clutch cover, clutch disc and
clutch release sys- clutch disc hub
tem, and clutch spline.
pedal free play.
No