Subaru Impreza 2002 Service Manual page 467

DIFFERENTIALS
2) Press-fit the rear bearing race into differential
carrier using ST.
ST 398417700 DRIFT
ST
3) Press-fit the front bearing race into differential
carrier using ST.
ST 398477702 DRIFT
4) Pinion height adjusting shim selection.
(1) Measure the thickness of inserted pinion
height adjusting shim.
(2) Read the punch mark of installed drive pin-
ion gear and new one.
REAR DIFFERENTIAL FOR T-TYPE
DR0034
DR0035
DR0036
DI-24
NOTE:
If there is no punch mark, it means 0 (zero).
(3) Obtain the thickness of pinion height adjust
shim to be inserted from the following formula,
and replace the inserted shim with this one.
T = T1 + (T2 x 0.01 − T3 x 0.01)
T Thickness of selected pinion height adjusting shim.
mm
T1 Thickness of inserted pinion height adjusting shim.
mm
T2 Punch mark number on installed drive pinion gear.
mm
T3 Punch mark number on new drive pinion gear.
mm
(Example of calculation)
T1 = 3.30, T2 = +2, T3 = −1
T = 3.30 + {(2 x 0.01) − (−1 x 0.01)} = 3.33
Result: Thickness = 3.33 mm
Therefore use the shim 38336AA310.
Pinion height adjusting shim
Part No.
38336AA230
38336AA240
38336AA250
38336AA260
38336AA270
38336AA280
38336AA290
38336AA300
38336AA310
38336AA320
38336AA330
38336AA340
38336AA350
38336AA360
38336AA370
38336AA380
38336AA390
38336AA400
38336AA410
38336AA420
+2
DR0037
Thickness T mm (in)
3.09 (0.1217)
3.12 (0.1228)
3.15 (0.1240)
3.18 (0.1252)
3.21 (0.1264)
3.24 (0.1276)
3.27 (0.1287)
3.30 (0.1299)
3.33 (0.1311)
3.36 (0.1323)
3.39 (0.1335)
3.42 (0.1346)
3.45 (0.1358)
3.48 (0.1370)
3.51 (0.1382)
3.54 (0.1394)
3.57 (0.1406)
3.60 (0.1417)
3.63 (0.1429)
3.66 (0.1441)