Subaru 2009 IMPREZA Service Manual page 94

PERIODIC MAINTENANCE SERVICES
16.Front & Rear Differential Gear
Oil
A: INSPECTION
1. FRONT DIFFERENTIAL (AT MODEL)
1) Park the vehicle on a level surface.
2) Remove the differential oil level gauge and wipe
it clean.
3) Reinsert the level gauge all the way. Make sure
the level gauge is inserted correctly and in the
proper orientation.
4) Remove the oil level gauge again, and check the
level of differential gear oil. If the differential gear oil
level is below "L" line, add oil to bring the level up to
"F" line.
NOTE:
To prevent overfilling the differential gear oil, do not
fill oil above the "F" line.
(A)
(B)
(C)
(A) Oil level gauge
(B) Upper level
(C) Lower level
2. REAR DIFFERENTIAL
1) Remove the filler plug, and then check the gear
oil. Replace the gear oil if it is contaminated or de-
teriorated.
2) Check that the gear oil level is up to the bottom
of the filler plug hole. If the level is low, refill up to
the bottom of filler plug.
(A)
(B)
(A) Filler plug
(B) Drain plug
Front & Rear Differential Gear Oil
(A)
AT-04840
DI-00521
B: REPLACEMENT
1. FRONT DIFFERENTIAL (MT MODEL)
For MT model, differential oil is used as manual
transmission oil for lubricating the differential. Refer
to "Transmission Oil". <Ref. to PM-27, Transmis-
sion Gear Oil.>
2. FRONT DIFFERENTIAL (AT MODEL)
1) Lift up the vehicle.
2) Drain the differential gear oil by removing drain
plug using TORX
CAUTION:
If the differential gear oil is spilt over exhaust
pipe, wipe it off with cloth to avoid emitting
smoke or causing a fire.
NOTE:
Before starting work, cool off the differential gear oil
well.
3) Replace the gasket with a new part and tighten
the differential oil drain plug to the specified torque
using the TORX
Tightening torque:
44 N·m (4.5 kgf-m, 32.5 ft-lb)
(Aluminum gasket silver)
70 N·m (7.1 kgf-m, 51.6 ft-lb)
(Copper gasket brown)
70 N·m (7.1 kgf-m, 51.6 ft-lb)
(Metal gasket black)
4) Lower the vehicle.
PM-30
®
bit T70.
PM-00384
®
bit T70.