1999 SUBARU LEGACY rear

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

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 DOJ of rear drive shaft from rear dif-
ferential.
G3M0257
15) Secure rear drive shaft to rear crossmember
using wire.
G3M0046
16) Remove lower differential bracket.
G3M0054
17) Support rear differential with transmission
jack.
G3M0055
23
[W2B2]3-4SERVICE PROCEDURE
2. Rear Differential

18) Remove self-locking nuts connecting rear dif-
ferential to rear crossmember.
B3M0131
19) Remove bolts which secure rear differential
front member to body. Loosen bolt A first, then
removal bolts B .
NOTE:
Support front member with the use of a helper to
prevent it from dropping.
B3M0657C
(A) Bolt A
(B) Bolt B
20) Remove bolt A.
21) While slowly lowering transmission jack, move
rear differential forward and remove bolts from rear
crossmember.
22) Remove front member from body.
G3M0058
23) Remove rear differential from body.
G3M0059
C: DISASSEMBLY
1. T-TYPE
NOTE:
To detect real cause of trouble, inspect the follow-
ing items before disassembling.
ITooth contact of crown gear and pinion, and
backlash
IRunout of crown gear at its back surface
ITurning resistance of drive pinion
1) Set ST on vise and install the differential
assembly to ST.
ST 398217700 ATTACHMENT
G3M1031
2) Drain gear oil by removing plug.
3) Remove the air breather cap.
NOTE:
Do not attempt to replace the air breather cap
unless necessary.
G3M1033
24
3-4[W2C1]SERVICE PROCEDURE
2. Rear Differential