Subaru IMPREZA GD 2007 Series Manual page 3317

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5. Rear Differential Front Oil
Seal
A: REPLACEMENT
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Shift the select lever or gear shift lever to neutral.
4) Release the parking brake.
5) Remove the oil drain plug, and drain gear oil.
(A) Filler plug
(B) Drain plug
6) Install the oil drain plug.
NOTE:
Apply liquid gasket to the drain plug.
Liquid gasket:
THREE BOND 1105 (Part No. 004403010) or
equivalent
Tightening torque:
49 N·m (5.0 kgf-m, 36.2 ft-lb)
7) Lift up the vehicle.
8) Remove the rear exhaust pipe and muffler.
9) Remove the propeller shaft from the vehicle
body. <Ref. to DS-15, REMOVAL, Propeller
Shaft.>
10) Remove the self-locking nut while holding the
companion flange with ST.
Except for STI model
ST 498427200 FLANGE WRENCH
STI model
ST 18633AA000 WRENCH COMPL
ST
Rear Differential Front Oil Seal
11) Remove the center heat shield cover.
12) Extract the companion flange using ST.
ST 399703600
DI-00048
13) Remove the oil seal using ST.
ST 398527700
14) Install a new oil seal using ST.
ST 498447120
15) Install the companion flange.
NOTE:
Use a plastic hammer to install companion flange.
DI-00194
DI-51
DIFFERENTIALS
DI-00195
PULLER ASSY
ST
DI-00196
PULLER ASSY
ST
DI-00197
INSTALLER
ST
DI-00198