Clutch Disc

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

Facing wear
Measure the depth of rivet head from the surface of facing. Replace if 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 Of Rivet Head From Surface Of Facing
Courtesy of SUBARU OF AMERICA, INC.
Hardened facing
Correct by using emery paper or replace.
Oil soakage on facing
Replace the clutch disc (A) and inspect the transmission front oil seal, transmission case mating surface, engine rear oil seal and other points for oil leakage.

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

ST 499747100 CLUTCH DISC GUIDE

Limit for deflection:

Non-TURBO model; 0.8 mm (0.031 in) at R = 107 mm (4.21 in)

TURBO model; 0.8 mm (0.031 in) at R = 110 mm (4.33 in)

Fig 3: Measuring Deflection On Facing
Courtesy of SUBARU OF AMERICA, INC.
Worn spline, loose rivets and torsion spring failure
If defective, replace clutch disc.

Fig 4: Identifying Spline, Rivet And Torsion Spring
Courtesy of SUBARU OF AMERICA, INC.