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

0.8 mm (0.031 in)

NOTE: Do not wash the clutch disc with any type of cleaning fluid.

Fig 1: Measuring Clutch Disc Facing Surface And Rivet Head Depth
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 Disc 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.

ST 499747100 CLUTCH DISC GUIDE

Limit for deflection:

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

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

Fig 4: Identifying Clutch Disc Spline, Rivet And Damper Spring

Courtesy of SUBARU OF AMERICA, INC.