Subaru Legacy IV (2008 year). Service manual — part 871
DI-33
Rear Differential (T-type)
DIFFERENTIALS
10) Remove the band from rear differential. Lift up
the rear differential until the rear differential is sep-
arated from the transmission jack.
11) Install the rear differential front member with a
new self-locking nut.
Tightening torque:
T1: 50 N·m (5.1 kgf-m, 36.9 ft-lb)
T2: 110 N·m (11.2 kgf-m, 81.1 ft-lb)
12) Tighten the self-locking nut.
Tightening torque:
70 N·m (7.1 kgf-m, 51.6 ft-lb)
13) Lower the transmission jack.
14) Install the propeller shaft. <Ref. to DS-11, IN-
STALLATION, Propeller Shaft.>
15) Install the heat shield cover.
16) Install the rear exhaust pipe and muffler.
• 2.5 L SOHC non-turbo model
<Ref. to EX(H4SO)-8, INSTALLATION, Rear Ex-
haust Pipe.> <Ref. to EX(H4SO)-10, INSTALLA-
TION, Muffler.>
• 2.5 L DOHC turbo model
<Ref. to EX(H4DOTC)-13, INSTALLATION, Rear
Exhaust Pipe.> <Ref. to EX(H4DOTC)-14, IN-
STALLATION, Muffler.>
17) After installing the rear differential carrier to the
vehicle, remove the filler plug, and refill with gear oil
up to the lower lip of the plug hole.
Oil capacity:
Except for GT spec. B 6MT model:
0.8
2
(0.8 US qt, 0.7 Imp qt)
GT spec. B 6MT model:
1.0
2
(1.1 US qt, 0.9 Imp qt)
18) Tighten the filler plug.
NOTE:
• Apply liquid gasket to the filler plug. (Except for
GT spec. B 6MT model)
Liquid gasket:
THREE BOND 1105 (Part No. 004403010) or
equivalent
• Use a new gasket. (GT spec. B 6MT model)
Tightening torque:
Except for GT spec. B 6MT model:
49 N·m (5.0 kgf-m, 36.1 ft-lb)
GT spec. B 6MT model:
60 N·m (6.1 kgf-m, 44.3 ft-lb)
19) Hereafter, install in the reverse order of remov-
al.
DI-00284
T2
T1
DI-00269
AT-01331
(A) Filler plug
(B) Oil drain plug
DI-00285
(A)
(B)
DI-34
Rear Differential (T-type)
DIFFERENTIALS
C: DISASSEMBLY
To detect the real cause of trouble, inspect the fol-
lowing items before disassembling.
• Tooth contact and backlash of hypoid driven
gear and drive pinion.
• Hypoid driven gear runout on its back surface
• Total preload of drive pinion
1) Set the ST on vise and install the differential as-
sembly to ST.
ST
398217700
ATTACHMENT SET
2) Remove the oil drain plug and filler plug, and
drain the gear oil.
3) Remove the air breather cap.
NOTE:
• Do not attempt to replace the air breather cap un-
less necessary.
• Whenever the air breather cap is removed, re-
place it with a new part.
4) Remove the bolts, and then remove the rear
cover.
NOTE:
Remove by tapping with a plastic hammer.
5) Keep the side retainers separate in order to eas-
ily identify RH and LH sides. Remove the side re-
tainer mounting bolts, set the ST to differential
case, and extract the side retainers RH and LH with
a puller.
NOTE:
Side retainer shim of each side should be kept to-
gether with its mating retainer.
ST
398457700
ATTACHMENT
6) Pull out the differential case assembly from dif-
ferential carrier.
NOTE:
Be careful not to hit the teeth against the case.
(A) Air breather cap
(B) Rear cover
ST
DI-00061
(A)
(B)
DI-00062
(A) Rear cover
(B) Differential carrier
(A)
(B)
DI-00063
ST
DI-00064
DI-00065
DI-35
Rear Differential (T-type)
DIFFERENTIALS
7) When replacing the side bearing, remove the
bearing cup from the side retainer using ST.
ST
398527700
PULLER ASSY
8) Remove the bearing cone with ST.
NOTE:
• Do not attempt to disassemble the parts unless
necessary.
• Set the puller so that its claws catch the edge of
the bearing cone.
• Store so that the right and left side bearing races
and cones are not mixed together.
ST
18759AA000
PULLER ASSY
9) Remove the hypoid driven gear by loosening hy-
poid driven gear bolts.
10) Drive out the pinion shaft lock pin from the hy-
poid driven gear side. (Model without LSD)
NOTE:
The lock pin is staked at the pin hole end on the dif-
ferential carrier. Do not drive it out forcibly before
removing the stake.
ST
899904100
STRAIGHT PIN REMOVER
11) Draw out the pinion mate shaft and remove pin-
ion mate gears, side gears and thrust washers.
(Model without LSD)
NOTE:
The gears should be marked or kept separated
right and left, and front and rear as well as thrust
washers.
ST
DI-00066
DI-00316
ST
DI-00068
(A) Side gear
(B) Pinion mate gear
(C) Thrust washer
(D) Differential case
(E) Pinion mate shaft
DI-00237
ST
DI-00238
DI-36
Rear Differential (T-type)
DIFFERENTIALS
12) Remove the self-locking nut while holding the
companion flange with ST.
ST
498427200
FLANGE WRENCH
13) Extract the companion flange with a puller.
14) Press the end of drive pinion shaft and extract it
together with rear bearing cone, pinion height ad-
justing washer and washer.
NOTE:
Hold the drive pinion so as not to drop it.
ST
398467700
DRIFT
15) Remove the rear bearing cone from drive pin-
ion by supporting the cone with ST.
NOTE:
Place the replacer so that its center-recessed side
faces the pinion gear.
ST
398517700
REPLACER
16) Remove the front oil seal from differential carri-
er using ST.
ST
398527700
PULLER ASSY
17) Remove the pilot bearing together with the front
bearing cone and spacer using the ST.
ST
398467700
DRIFT
(A) Companion flange
(B) PULLER
ST
DI-00071
(B)
(A)
DI-00142
ST
DI-00073
(A) Differential carrier
(B) Front oil seal
(A) Pilot bearing
(B) Spacer
(C) Front bearing
(D) Rear bearing cup
ST
DI-00074
(B)
(A)
DI-00145
ST
(B)
(A)
(C)
(D)
DI-00076
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