Subaru 2009 IMPREZA Service Manual page 1903

12.Differential Side Retainer Oil
Seal
A: INSPECTION
Check for leakage of gear oil from differential side
retainer oil seal part. If there is an oil leak, replace
the oil seal and inspect the drive shaft.
B: REPLACEMENT
1) Lift up the vehicle.
2) Remove the front and center exhaust pipes.
• Non-turbo model
<Ref. to EX(H4SO)-6, REMOVAL, Front Exhaust
Pipe.> <Ref. to EX(H4SO)-9, REMOVAL, Center
Exhaust Pipe.>
• Turbo model
<Ref. to EX(H4DOTC)-8, REMOVAL, Center Ex-
haust Pipe.>
3) Remove the differential gear oil drain plug using
®
TORX bit T70, and then drain differential gear oil.
CAUTION:
• The differential gear oil will be extremely hot
after driving. Be careful not to receive burns.
• Be careful not to spill the differential gear oil
on exhaust pipe to prevent it from emitting
smoke or causing fires. If differential gear oil is
spilled on the exhaust pipe, wipe it off com-
pletely.
(B)
(A) Oil pan
(B) Differential gear oil drain plug
4) Perform replacement with a new gasket, and
tighten the differential gear oil drain plug.
Tightening torque:
Aluminum gasket (silver)
44 N·m (4.5 kgf-m, 32.5 ft-lb)
Copper gasket (brown)
70 N·m (7.1 kgf-m, 51.6 ft-lb)
Metal gasket (black)
70 N·m (7.1 kgf-m, 51.6 ft-lb)
5) Separate the front drive shaft from the transmis-
sion. <Ref. to DS-26, REMOVAL, Front Drive
Shaft.>
Differential Side Retainer Oil Seal
(A)
AT-04830
4AT-47
AUTOMATIC TRANSMISSION
6) Remove the differential side retainer oil seal us-
ing a screwdriver wrapped with vinyl tape etc.
7) Using the ST, install the differential side retainer
oil seal by lightly tapping with a hammer.
ST 18675AA000 DIFFERENTIAL SIDE OIL
SEAL INSTALLER
8) Apply gear oil to the oil seal lips.
9) Using the ST, install the front drive shaft. <Ref.
to DS-26, INSTALLATION, Front Drive Shaft.>
ST 28399SA010 OIL SEAL PROTECTOR
10) Install the front and center exhaust pipes.
• Non-turbo model
<Ref. to EX(H4SO)-7, INSTALLATION, Front Ex-
haust Pipe.> <Ref. to EX(H4SO)-9, INSTALLA-
TION, Center Exhaust Pipe.>
• Turbo model
<Ref. to EX(H4DOTC)-10, INSTALLATION, Center
Exhaust Pipe.>
11) Lower the vehicle.
12) Fill with differential gear oil through the oil level
gauge hole. <Ref. to 4AT-29, Differential Gear Oil.>
13) Check the level of differential gear oil. <Ref. to
4AT-29, INSPECTION, Differential Gear Oil.>
ST
AT-00029