Subaru 2009 IMPREZA Service Manual page 2306

DIFFERENTIALS
15) Press the side bearing outer race into the side
retainer using the ST.
ST 398417700 DRIFT
ST
16) Side retainer shim adjustment
(1) The driven gear backlash and side bearing
preload can be adjusted by the side retainer
shim thickness.
(2) Install the differential case assembly into dif-
ferential carrier in the reverse order of disas-
sembly.
NOTE:
Be careful not to hit the teeth against the case.
(3) Install the side retainer shims and O-ring to
retainers RH and LH on which they were in-
stalled.
NOTE:
• Replace the O-ring with a new part.
• Replace broken or corroded side retainer shims
with a new part of the same thickness.
Side retainer shim
Part No.
383475201
383475202
383475203
383475204
383475205
Rear Differential
DI-00324
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)
DI-28
(4) Align the arrow mark on the differential car-
rier with that on the side retainer during installa-
tion.
NOTE:
Be careful that side bearing outer race is not dam-
aged by the bearing roller.
(A)
(A) Arrow mark (on the side retainer)
(B) Arrow mark (on the differential carrier)
(5) Tighten the side retainer bolts.
Tightening torque:
10.5 N·m (1.1 kgf-m, 7.7 ft-lb)
(6) Measure the hypoid driven gear to drive pin-
ion backlash. Set the magnet base on differen-
tial carrier. Align the contact point of dial gauge
with tooth face of hypoid driven gear, and move
hypoid driven gear while holding drive pinion
still. Read the value indicated on dial gauge. If
the backlash is outside the standard range, ad-
just the side retainer shim by the following
method.
•When backlash is less than 0.1 mm (0.004 in):
Reduce the thickness of shim on the back side
of the hypoid driven gear and increase the
thickness of shims on the teeth side of the hy-
poid driven gear.
•When backlash exceeds 0.2 mm (0.008 in):
Increase the thickness of shim on the back side
of the hypoid driven gear and reduce the thick-
ness of shims on the teeth side of the hypoid
driven gear.
(B)
DI-00543
DI-00487