Clutch Disc

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

Facing wear:
Measure the depth from the surface of facing to rivet head. Replace if the facings are worn locally or worn down to less than the specified value.

Depth of rivet head:

Limit of sinking

0.3 mm (0.012 in)

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

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

Fig 2: Replacing Clutch Disc
Courtesy of SUBARU OF AMERICA, INC.
Deflection on facing:
If deflection exceeds the specified value at the outer circumference of facing, replace the clutch disc. ST 499747100 CLUTCH DISC GUIDE

Limit for deflection:

Turbo model

1.0 mm (0.039 in) at R = 110 mm (4.33 in)

Non-turbo model

0.7 mm (0.027 in) at R = 110 mm (4.33 in)

Fig 3: Identifying Deflection On Facing
Courtesy of SUBARU OF AMERICA, INC.
If the spline wears, rivets loosen and damper spring is failure, replace the clutch disc.

Fig 4: Loosening And Damper Spring
Courtesy of SUBARU OF AMERICA, INC.