Clutch Disc

WARNING: This page is about a different variant/trim than selected.

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 cleaning fluid.

Fig 1: Measuring Depth Of Rivet Head From Surface Of Facing
Courtesy of SUBARU OF AMERICA, INC.
Hardened facing
Replace the clutch disc.
Oil soakage on facing
Replace the clutch disc and inspect the transmission front oil seal, transmission case mating surface, engine rear oil seal and other locations for oil leakage.

Fig 2: Identifying Clutch Facing
Courtesy of SUBARU OF AMERICA, INC.
Deflection on facing
If deflection exceeds the specified value at the outer circumference of the facing, replace the clutch disc.

Limit for deflection:

0.7 mm (0.028 in) at R = 110 mm (4.33 in)

ST 499747100 CLUTCH DISC GUIDE

Fig 3: Measuring Deflection On Facing
Courtesy of SUBARU OF AMERICA, INC.
If there is spline wear, loose rivets, failed damper springs, etc, replace the clutch disc.

Fig 4: Identifying Spline, Rivets, Failed Damper Springs
Courtesy of SUBARU OF AMERICA, INC.