Subaru Impreza 2002 Service Manual page 2687

DIFFERENTIALS
6. Rear Differential Front Oil
Seal
A: REPLACEMENT
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Move the select lever or gear shift lever to "N".
4) Release the parking brake.
5) Remove the oil drain plug, and drain the gear oil.
(A) Filler plug
(B) Drain plug
6) Install the oil drain plug.
NOTE:
• Apply fluid packing to the drain plug for T-type.
• Use a new aluminum gasket for VA-type.
Tightening torque:
T-type;
49 N·m (5.0 kgf-m, 36.2 ft-lb)
VA-type;
34 N·m (3.5 kgf-m, 25.3 ft-lb)
7) Jack-up the rear wheels and support the vehicle
body with sturdy racks.
8) Remove the rear exhaust pipe and muffler.
9) Remove the propeller shaft from body. <Ref. to
DS-15, REMOVAL, Propeller Shaft.>
10) Remove the self-locking nut while holding the
companion flange with ST.
ST 498427200 FLANGE WRENCH
REAR DIFFERENTIAL FRONT OIL SEAL
DR0003
B3M1608A
11) Remove the tank cover.
12) Extract the companion flange using ST.
ST 399703602
13) Remove the oil seal using ST.
ST 499705401
14) Fit a new oil seal using ST.
ST 498447120
DI-56
B3M1643
PULLEY ASSY
B3M1644B
PULLER ASSY
B3M1609B
DRIFT
G3M0037