Subaru Impreza 2003 Service Manual page 2240

DIFFERENTIALS
Part No.
32288AA040
32288AA050
31454AA100
32288AA060
Preload adjusting
spacer
31454AA110
32288AA070
31454AA120
32288AA080
32288AA090
2) Adjusting drive pinion height
Adjust the drive pinion height with shim installed
between the rear bearing cone and back of pinion
gear.
(1) Install the ST3.
Front and rear bearing preload
For new bearing:
12.7 — 32.4 N (1.3 — 3.3 kgf, 2.9 — 7.3 lb)
at companion flange bolt hole
NOTE:
At this time, install the pinion height adjusting shim
which is temporarily selected or same as that used
before.
ST1 498447150 DUMMY SHAFT
ST2 32285AA000 DUMMY COLLAR
ST3 498505501 DIFFERENTIAL CARRIER
GAUGE
ST2
(A) Pinion height adjusting shim
REAR DIFFERENTIAL FOR VA-TYPE
Length mm (in)
52.3 (2.059)
52.5 (2.067)
52.6 (2.071)
52.7 (2.075)
52.8 (2.079)
52.9 (2.083)
53.0 (2.087)
53.1 (2.091)
53.3 (2.098)
ST1 ST3
RH
N
LH
(A)
DI-00082
(2) Measure the clearance N between the end
of ST3 and end surface of ST1 by using a thick-
ness gauge.
NOTE:
Make sure there is no clearance between the case
and ST3.
ST1 498447150
ST2 498505501
ST2
ST1
(3) Obtain the thickness of pinion height adjust-
ing shim to be inserted from the following formu-
la, and replace the temporarily installed shim
with this one.
NOTE:
Use 1 to 3 shims as required for adjustment.
T = To + N − 0.05 (mm)
where
T = Thickness of pinion height adjusting shim
(mm)
To = Thickness of shim originally installed
(mm)
N = Reading of thickness gauge (mm)
H = Figure marked on drive pinion head
(Example of calculation)
To = 0.15 mm
N = 0.1 mm
T = 0.15 + 0.1 − 0.05 = 0.2 mm
Result: Thickness = 0.2 mm
Therefore use the 32295AA220.
Pinion height adjusting shim
Part No.
32295AA200
32295AA210
32295AA220
32295AA230
32295AA240
32295AA250
DI-60
DUMMY SHAFT
DIFFERENTIAL CARRIER
GAUGE
DI-00084
Thickness mm (in)
0.150 (0.0059)
0.175 (0.0069)
0.200 (0.0079)
0.225 (0.0089)
0.250 (0.0098)
0.275 (0.0108)