Subaru 2002 IMPREZA Service Manual page 2002

DIFFERENTIALS
NOTE:
If measured backlash is not within specified range,
repeat the procedures for pinion crown gear set
backlash adjustment and differential side bearing
preload adjustment.
Backlash:
0.10 — 0.15 mm (0.0039 — 0.0059 in)
15) Draw a matching mark on both differential car-
rier and holder. Remove the holder one side at a
time.
Replace in the original position after inserting an O-
ring and applying grease to threaded portion.
(A) Matching mark
(B) Holder
16) Tighten the bolt of lock plate to specified
torque.
Tightening torque:
25 N·m (2.5 kgf-m, 18.1 ft-lb)
REAR DIFFERENTIAL FOR VA-TYPE
S3M0523
S3M0524A
G3M0063
DI-52
17) Re-check the crown gear-to-pinion backlash.
Backlash:
0.10 — 0.15 mm (0.0039 — 0.0059 in)
18) Check the crown gear runout on its back sur-
face, and make sure that pinion and crown gear ro-
tate smoothly.
Limit of runout:
0.05 mm (0.0020 in)
19) Checking and adjusting tooth contact of crown
gear.
(1) Apply an even coat of red lead on both sides
of three or four teeth on the crown gear. Check
the contact pattern after rotating the crown gear
several revolutions back and forth until a definite
contact pattern appears on the crown gear.
(2) When the contact pattern is incorrect, read-
just according to the instructions given in
"TOOTH CONTACT PATTERN".
NOTE:
Be sure to wipe off red lead completely after adjust-
ment is completed.
S3M0523
S3M0525