Subaru IMPREZA GD 2007 Series Manual page 2748

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C: INSPECTION
1. CLUTCH DISC
1) Facing wear:
Measure the depth from the facing surface to the
rivet head. Replace if the face is worn locally or
worn down to less than the specified value.
Depth to rivet head:
Limit of sinking
0.3 mm (0.012 in)
NOTE:
Do not wash the clutch disc with any type of clean-
ing fluid.
2) Hardened facing
Replace the clutch disc.
3) Oil soakage on facing
Replace the clutch disc and inspect the transmis-
sion front oil seal, transmission case mating sur-
face, engine rear oil seal and other locations for oil
leakage.
(A) Clutch facing
Clutch Disc and Cover
4) Deflection on facing:
If deflection exceeds the specified value at the out-
er circumference of the facing, replace the clutch
disc.
ST 499747100
Limit for deflection:
Except for STI model
0.7 mm (0.028 in) at R = 110 mm (4.33 in)
STI model
0.7 mm (0.028 in) at R = 115 mm (4.53 in)
5) If there is spline wear, loose rivets, failed torsion
springs, etc., replace the clutch disc.
CL-00014
(A)
(A) Spline
(B) Rivet
(C) Torsion spring
CL-00015
CL-15
CLUTCH SYSTEM
CLUTCH DISC GUIDE
S T
CL-00016
CL-00017