Subaru Impreza 2002 Service Manual page 471

DIFFERENTIALS
(5) Tighten the side bearing retainer bolts.
Tightening torque:
10.3 N·m (1.05 kgf-m, 7.6 ft-lb)
(6) Measure the crown gear-to-drive pinion
backlash. Set the magnet base on differential
carrier. Align the contact point of dial gauge with
tooth face of crown gear, and move the crown
gear while holding drive pinion still. Read the
value indicated on dial gauge.
Backlash:
0.10 — 0.20 mm (0.0039 — 0.0079 in)
(7) At the same time, measure the turning resis-
tance of drive pinion. Compared with the resis-
tance when differential case is not installed, if
the increase of the resistance is not within the
specified range, readjust side bearing retainer
shims.
Turning resistance increase:
31.1 — 59.5 N (3.17 — 6.07 kgf, 7.0 — 13.4 lb)
REAR DIFFERENTIAL FOR T-TYPE
S3M0173
G3M1047
DI-28
21) Re-check the crown gear-to-pinion backlash.
Backlash:
0.10 — 0.20 mm (0.0039 — 0.0079 in)
22) Check the crown gear runout on its back sur-
face, and make sure that pinion and crown gear ro-
tate smoothly.
Limit of runout:
Less than 0.05 mm (0.0020 in)
23) 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.
G3M1047
S3M0525