1999 SUBARU LEGACY front 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

(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

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

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

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

10) Drive out pinion shaft lock pin from crown gear
side.
NOTE:
The lock pin is staked at the pin hole end on the
differential case; do not drive it out forcibly before
unstaking it.
ST 899904100 STRAIGHT PIN REMOVER
B3M0133
11) Draw out pinion mate shaft and remove pinion
mate gears, side gears and thrust washers.
NOTE:
The gears as well as thrust washers should be
marked or kept separated left and right, and front
and rear.
G3M0071
12) Hold companion flange with ST and remove
drive pinion nut.
ST 498427200 FLANGE WRENCH
G3M1052
13) Extract the companion flange with a puller.
G3M0073
14) Press the end of drive pinion shaft and extract
it together with rear bearing cone, preload adjust-
ing spacer and washer.
NOTE:
Hold the drive pinion so as not to drop it.
ST 398467700 DRIFT
G3M0074
15) Remove rear bearing cone from drive pinion
by supporting cone with ST.
NOTE:
Place the replacer so that its center-recessed side
faces the pinion gear.
ST 498515500 REPLACER
G3M0075
26
3-4[W2C1]SERVICE PROCEDURE
2. Rear Differential

16) Remove front oil seal from differential carrier
using ST.
ST 398527700 PULLER ASSY
G3M0076
17) Remove pilot bearing together with front bear-
ing cone using ST.
ST 398467700 DRIFT
B3M0872A
18) When replacing bearings, tap front bearing
cup and rear bearing cup in this order out of case
by using a brass bar.
G3M0078
2. VA-TYPE
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 pinion1) Set ST on vise and install the differential
assembly to ST.
ST 398217700 ATTACHMENT
G3M0060
2) Drain gear oil by removing plug.
3) Remove rear cover by loosening retaining
bolts.
G3M0061
4) Replace air breather cap.
NOTE:
Do not attempt to replace the air breather cap
unless necessary.
G3M0062
27
[W2C2]3-4SERVICE PROCEDURE
2. Rear Differential

10) Extract bearing cone with ST.
CAUTION:
Do not attempt to disassemble the parts unless
necessary.
NOTE:
ISet Puller so that its claws catch the edge of the
bearing cone.
INever mix up the right and left hand bearing
cones.
ST 899524100 PULLER SET
G3M0068
11) Remove crown gear by loosening crown gear
bolts.
G3M0069
12) Drive out pinion shaft lock pin from crown gear
side.
NOTE:
The lock pin is staked at the pin hole end on the
differential case; do not drive it out forcibly before
unstaking it.
ST 899904100 STRAIGHT PIN REMOVER
B3M0133
13) Draw out pinion mate shaft and remove pinion
mate gears, side gears and thrust washers.
NOTE:
The gears as well as thrust washers should be
marked or kept separated left and right, and front
and rear.
G3M0071
14) Hold companion flange with ST and remove
drive pinion nut.
ST 498427200 FLANGE WRENCH
G3M0072
15) Extract the companion flange with a puller.
G3M0073
29
[W2C2]3-4SERVICE PROCEDURE
2. Rear Differential