Subaru Impreza 2002 Service Manual page 2688

REAR DIFFERENTIAL FRONT OIL SEAL
DIFFERENTIALS
15) Install the companion flange.
NOTE:
Use a plastic hammer to install the companion
flange.
16) Tighten the self-locking nut within the specified
torque range so that the turning resistance of com-
panion flange becomes the same as that before re-
placing oil seal.
ST 498427200 FLANGE WRENCH
NOTE:
Use a new self-locking nut.
Tightening torque:
181 N·m (18.5 kgf-m, 134 ft-lb)
G3M0034
17) Hereafter, reassemble in the reverse order of
disassembly.
DI-57