Subaru 2009 IMPREZA Service Manual page 2314

DIFFERENTIALS
13) Install a new oil seal using ST.
ST 498447120 INSTALLER
14) Install the companion flange.
NOTE:
Use a plastic hammer to install companion flange.
15) Tighten the self-locking nut to the specified
torque so that the rotating resistance of the com-
panion flange is the same value as that before re-
placing the oil seal.
ST 498427200 FLANGE WRENCH
NOTE:
• Use a new self-locking nut.
• Before installing the self-locking nut, apply seal
material to self-locking nut threads.
Seal material:
THREE BOND 1324 (Part No. 004403042) or
equivalent
Tightening torque:
181.5 N·m (18.5 kgf-m, 133.9 ft-lb)
ST
16) Hereafter, reassemble in the reverse order of
disassembly.
17) After installing, fill the differential carrier with
gear oil up to the bottom of the filler plug hole. <Ref.
to DI-14, Differential Gear Oil.>
Rear Differential Front Oil Seal
ST
DI-00292
DI-00199
DI-36