Subaru Legacy IV (2008 year). Service manual — part 884
DI-85
Rear Differential (VA-type)
DIFFERENTIALS
F: ADJUSTMENT
1. SIDE GEAR BACKLASH
Adjust the side gear backlash. (VA1-type) <Ref. to
DI-66, ASSEMBLY, Rear Differential (VA-type).>
2. HYPOID DRIVEN GEAR BACKLASH
Adjust hypoid driven gear backlash. <Ref. to DI-66,
ASSEMBLY, Rear Differential (VA-type).>
3. TOOTH CONTACT BETWEEN HYPOID
DRIVEN GEAR AND DRIVE PINION
Adjust the tooth contact between hypoid driven
gear and drive pinion gear. <Ref. to DI-66, ASSEM-
BLY, Rear Differential (VA-type).>
DI-86
Rear Differential Front Oil Seal
DIFFERENTIALS
6. Rear Differential Front Oil
Seal
A: INSPECTION
Make sure that there is no leakage from front oil
seal portion. If there is any leakage replace the oil
seal and inspect the propeller shaft.
B: REPLACEMENT
1) Disconnect the ground cable from battery.
2) Shift the select lever or gear shift lever to neutral.
3) Release the parking brake.
4) Lift up the vehicle.
5) Remove the oil drain plug, and drain gear oil.
• T-type
• VA1-type
• VA2-type
6) Install the oil drain plug.
NOTE:
• Apply liquid gasket to the drain plug for the T-
type (except for GT spec. B 6MT model).
Liquid gasket:
THREE BOND 1105 (Part No. 004403010) or
equivalent
• Use a new gasket for the VA-type and T-type
(GT spec. B 6MT model).
Tightening torque:
T-type (except for GT spec.B 6MT model):
49 N·m (5.0 kgf-m, 36.1 ft-lb)
T-type (GT spec. B 6MT model):
60 N·m (6.1 kgf-m, 44.3 ft-lb)
VA1-type:
34 N·m (3.5 kgf-m, 25.1 ft-lb)
VA2-type:
50 N·m (5.1 kgf-m, 36.9 ft-lb)
7) Remove the rear exhaust pipe and muffler.
• 2.5 L SOHC non-turbo model
<Ref. to EX(H4SO)-8, REMOVAL, Rear Exhaust
Pipe.> <Ref. to EX(H4SO)-10, REMOVAL, Muf-
fler.>
• 2.5 L DOHC turbo model
<Ref. to EX(H4DOTC)-12, REMOVAL, Rear Ex-
haust Pipe.> <Ref. to EX(H4DOTC)-14, REMOV-
AL, Muffler.>
• 3.0 L DOHC non-turbo model
<Ref. to EX(H6DO)-7, REMOVAL, Rear Exhaust
Pipe.> <Ref. to EX(H6DO)-9, REMOVAL, Muffler.>
(A) Filler plug
(B) Oil drain plug
(A) Filler plug
(B) Oil drain plug
DI-00356
(A)
(B)
DI-00505
(A)
(B)
(A) Filler plug
(B) Oil drain plug
(A)
DI-00357
(B)
DI-87
Rear Differential Front Oil Seal
DIFFERENTIALS
8) Remove the heat shield cover.
9) Remove the propeller shaft. <Ref. to DS-10, RE-
MOVAL, Propeller Shaft.>
10) Remove the self-locking nut while holding the
companion flange with ST.
ST
498427200
FLANGE WRENCH
11) Remove the companion flange using ST.
ST
399703600
PULLER ASSY
12) Remove the oil seal using ST or screwdriver.
ST
398527700
PULLER ASSY
13) Install a new oil seal using ST.
NOTE:
Apply the differential gear oil to the oil seal lips.
ST
498447120
INSTALLER
14) Install the companion flange.
NOTE:
Use a plastic hammer to install companion flange.
15) Tighten the self-locking nut within the specified
torque range so that the rotating resistance of com-
panion flange becomes the same as that of before
oil seal replacement.
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:
T-type:
181.5 N·m (18.5 kgf-m, 133.9 ft-lb)
VA-type:
191 N·m (19.5 kgf-m, 140.9 ft-lb)
16) Hereafter, reassemble in the reverse order of
disassembly.
17) After installing, fill with differential gear oil up to
the bottom of the filler plug hole. <Ref. to DI-26, Dif-
ferential Gear Oil.>
AT-01331
DI-00194
ST
DI-00196
ST
DI-00197
ST
DI-00292
ST
DI-00194
ST
DI-88
Rear Differential Side Oil Seal
DIFFERENTIALS
7. Rear Differential Side Oil Seal
A: INSPECTION
Make sure that there is no leakage from side oil
seal. If there is any leakage, replace the oil seal.
B: REPLACEMENT
1) Remove the rear differential. <Ref. to DI-30, RE-
MOVAL, Rear Differential (T-type).> <Ref. to DI-56,
REMOVAL, Rear Differential (VA-type).>
2) Remove the rear differential side oil seal using a
screwdriver or ST wrapped with vinyl tape to pre-
vent the side retainer from scratches.
3) Using the ST, install the oil seal to the side re-
tainer.
• T-type and VA2-type
ST
398437700
DRIFT
• VA1-type
ST
498447100
INSTALLER
4) Install the rear differential. <Ref. to DI-32, IN-
STALLATION, Rear Differential (T-type).> <Ref. to
DI-58, INSTALLATION, Rear Differential (VA-
type).>
ST
DI-00209
ST
DI-00221
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