Subaru Impreza 2003 Service Manual page 2228

DIFFERENTIALS
20) Adjusting side bearing retainer shims
(1) The driven gear backlash and side bearing
preload can be determined by the side bearing
retainer shim thickness.
(2) Install the differential case assembly into dif-
ferential carrier in the reverse order of disas-
sembly.
(3) Install the side retainer shims and O-rings to
the right and left retainers from which they were
removed.
NOTE:
• Replace the broken or cracked O-ring with new
one.
• Replace the broken or corroded side retainer
shim with a new one of same thickness.
Side bearing retainer shim
Part No.
383475201
383475202
383475203
383475204
383475205
(4) Align the arrow mark on differential carrier
with the mark on side retainer during installation.
NOTE:
Be careful that side bearing outer race is not dam-
aged by bearing roller.
(A) Arrow mark
REAR DIFFERENTIAL FOR T-TYPE
DI-00065
Thickness mm (in)
0.20 (0.0079)
0.25 (0.0098)
0.30 (0.0118)
0.40 (0.0157)
0.50 (0.0197)
(A)
DI-00097
DI-48
(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 total preload
of drive pinion. Compared with the resistance
when differential case is not installed, if the total
preload is not within the specified range, read-
just side bearing retainer shims, increasing/re-
ducing by an even amount at a time.
Total preload:
28.5 — 57.0 N (2.91 — 5.81 kgf, 6.4 — 12.8 lb)
DI-00098
DI-00099