Subaru Legacy 2002 Service Manual page 2007

Differentials
21) If proper tooth contact is not obtained, once
again adjust the drive pinion height changing RH
and LH side bearing retainer shims and the hypoid
gear backlash.
(1) Drive pinion height
ST1 398507702 DUMMY SHAFT
ST2 398507701 DIFFERENTIAL CARRIER
GAUGE
T = To + N − (H x 0.01) − 0.20 (mm)
Where:
T = Thickness of pinion height adjusting shim
(mm)
To = Thickness of shim temporarily inserted
(mm)
N = Reading of thickness gauge (mm)
H = Figure marked on drive pinion head
(2) Hypoid gear backlash
Backlash:
0.10 — 0.20 mm (0.0039 — 0.0079 in)
REAR DIFFERENTIAL FOR T-TYPE
H3M1309B
G3M1047
DI-38
22) Install rear cover and tighten bolts to specified
torque.
Tightening torque:
29 N·m (3.0 kgf-m, 21.7 ft-lb)
G3M1050