1999 SUBARU LEGACY Service Repair Manual

8) Extract companion flange with a puller.
G3M0035
9) Remove oil seal using ST.
ST 398527700 PULLER ASSY (T-type)
ST 499705401 PULLER ASSY (VA-type)
G3M0036
10) Fit a new oil seal using ST.
ST 498447120 OIL SEAL INSTALLER
G3M0037
11) Install companion flange.12) Tighten self-locking nut within the specified
torque range so that the turning resistance of com-
panion flange becomes the same as that before
replacing oil seal.
CAUTION:
Use a new self-locking nut.
ST 498427200 FLANGE WRENCH
Tightening torque:
T-type;
181.4
±14.7 N´m (18.50±1.50 kg-m,
133.8
±10.8 ft-lb)
VA-type;
188
±26 N´m (19.2±2.7 kg-m, 139±20 ft-lb)
G3M0034
13) Reassembling procedure hereafter is the
reverse of the disassembling.
2. SIDE OIL SEAL (T-TYPE)
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to ªNº.
3) Release the parking brake.
4) Loosen both wheel nuts.
5) Jack-up the vehicle and support it with rigid
racks.
6) Remove wheels.
7) Remove rear exhaust pipe.

8) Remove muffler.

9) Remove the ABS sensor cable clamp and park-
ing brake cable clamp from bracket.
B3M0610A
15
[W2A2]3-4SERVICE PROCEDURE
2. Rear Differential

10) Remove the ABS sensor cable clamp from the
trailing link.
B3M0611A
11) Remove the ABS sensor cable clamp and
parking brake cable guide from the trailing link.
B3M0612A
12) Remove the rear stabilizer link.
G3M0041
13) Remove the bolts which secure the trailing link
to the rear housing.
G3M0042
14) Remove the bolts which secure the front and
rear lateral link to the rear housing.
G3M0043
15) Remove crossmember reinforcement lower
(Sedan only).
16) Remove the DOJ from the rear differential by
using ST.
CAUTION:
When removing the DOJ from the rear
differential, fit tire lever to the bolt as shown in
figure so as not to damage the side bearing
retainer.
ST 208099PA100 DRIVE SHAFT REMOVER
H3M1667A
16
3-4[W2A2]SERVICE PROCEDURE
2. Rear Differential

17) Secure rear drive shaft to rear crossmember
using wire.
G3M1022
18) Remove side oil seal with ST.
ST 398527700 PULLER ASSY
G3M1023
19) Drive in a new side oil seal with ST.
CAUTION:
Apply chassis grease between the oil seal lips.
ST 398437700 DRIFT
G3M1024
20) Install ST to rear differential.
ST 28099PA090 SIDE OIL SEAL PROTEC-
TOR
G3M1025
21) Insert the spline shaft until the spline portion is
inside the side oil seal.
ST 28099PA090 SIDE OIL SEAL PROTEC-
TOR
G3M1026
22) Remove ST.
ST 28099PA090 SIDE OIL SEAL PROTEC-
TOR
23) Hereafter, re-assemble in reverse order of dis-
assembly.
3. SIDE OIL SEAL (VA-TYPE)
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to ªNº.
3) Release the parking brake.
4) Loosen both wheel nuts.
5) Jack-up the vehicle and support it with rigid
racks.
6) Remove wheels.
7) Remove rear exhaust pipe.

8) Remove muffler.

9) Remove the DOJ of rear drive shaft from rear
differential.
17
[W2A3]3-4SERVICE PROCEDURE
2. Rear Differential

(1) Remove the ABS sensor cable clamp and
parking brake cable clamp from bracket.
H3M1397A
(2) Remove the ABS sensor cable clamp from
the trailing link.
H3M1398A
(3) Remove the ABS sensor cable clamp and
parking brake cable guide from the trailing link.
H3M1399A
(4) Remove the rear stabilizer link.
H3M1396A
(5) Remove the bolts which secure the trailing
link to the rear housing.
G3M0042
(6) Remove the bolts which secure the front
and rear lateral link to the rear housing.
G3M0043
18
3-4[W2A3]SERVICE PROCEDURE
2. Rear Differential

(7) Remove the DOJ from the rear differential
with tire lever.
CAUTION:
When removing the DOJ from the rear
differential, fit tire lever to the bolt as shown in
figure so as not to damage the axle shaft
holder.
NOTE:
The side spline shaft circlip comes out together
with the shaft.
H3M1664A
10) Secure rear drive shaft to rear crossmember
using wire.
G3M0046
11) Remove oil seal with screwdriver.
G3M0047
12) Drive in a new side oil seal with ST.
CAUTION:
Apply chassis grease between the oil seal lips.
ST 498447100 OIL SEAL INSTALLER
G3M0048
13) Install ST to rear differential.
ST 28099PA090 SIDE OIL SEAL PROTEC-
TOR
G3M0256
19
[W2A3]3-4SERVICE PROCEDURE
2. Rear Differential

14) Insert the spline shaft until the spline portion is
inside the side oil seal.
CAUTION:
Before inserting, replace the circlip at the end
of the spline shaft with a new one.
G3M0049
15) Remove ST.
ST 28099PA090 SIDE OIL SEAL PROTEC-
TOR
16) Completely insert DOJ into rear differential by
pressing rear housing.
NOTE:
Make sure that oil seal lip is not folded over inward.
H4M1095
17) Hereafter, re-assemble in reverse order of dis-
assembly.
B: REMOVAL
1. T-TYPE
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to ªNº.
3) Release the parking brake.
4) Loosen wheel nuts.
5) Jack-up vehicle and support it with sturdy
racks.
6) Remove wheels.
7) Remove rear exhaust pipe.

8) Remove muffler.
9) Remove front exhaust cover.
G3M0021
10) Remove front cover of rear differential mount.
G3M0022
20
3-4[W2B1]SERVICE PROCEDURE
2. Rear Differential

11) Remove propeller shaft.
CAUTION:
When removing propeller shaft, pay attention
not to damage the sliding surfaces of rear drive
shaft (extension) spline, oil seal and sleeve
yoke.
NOTE:
IPrepare an oil can and cap since the transmis-
sion oil flows out from the extension at removing
propeller shaft.
IInsert the cap into the extension to prevent
transmission oil from flowing out immediately after
removing the propeller shaft.
S3M0033A
12) Remove heat sealed cover.
13) Remove clamps and bracket of parking brake
cable.
G3M0053
14) Remove crossmember reinforcement lower
(Sedan only).15) Remove DOJ of rear drive shaft from rear dif-
ferential using ST.
ST 28099PA100 DRIVE SHAFT REMOVER
G3M1020
16) Secure rear drive shaft to rear crossmember
using wire.
G3M1022
17) Remove lower differential bracket.
G3M0054
18) Support rear differential with transmission
jack.
G3M0055
21
[W2B1]3-4SERVICE PROCEDURE
2. Rear Differential

19) Remove self-locking nuts connecting rear dif-
ferential to rear crossmember.
G3M1028
20) Remove bolts which secure rear differential
front member to body. Loosen bolt (A) first, then
remove bolts (B).
NOTE:
Support front member with the use of a helper to
prevent it from dropping.
B3M0657C
(A) Bolt A
(B) Bolt B
21) Remove bolt A.
22) While slowly lowering transmission jack, move
rear differential forward and remove front member
and rear differential from body.
G3M1029
23) Remove rear differential from front member.
G3M1030
2. VA-TYPE
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to ªNº.
3) Release the parking brake.
4) Loosen wheel nuts.
5) Jack-up vehicle and support it with sturdy
racks.
6) Remove wheels.
7) Remove rear exhaust pipe.

8) Remove muffler.

9) Remove front exhaust cover.
G3M0021
10) Remove front cover of rear differential mount.
G3M0022
22
3-4[W2B2]SERVICE PROCEDURE
2. Rear Differential