SUBARU LEGACY 1999 Service Repair Manual

1. Propeller Shaft
A: ON-CAR SERVICE
1) Joints and connections
Check for any looseness of yoke flange connect-
ing bolts and center bearing retaining bolts.
2) Splines and bearing locations
Turn propeller shaft by hand to see if abnormal free
play exists at splines. Also move yokes to see if
abnormal free play exists at spiders and bearings.
G3M0019
3) Runout of propeller shaft
Turn rear wheels by hand to check for ªrunoutº of
propeller shaft.
NOTE:
Measure runout with a dial gauge at the center of
front and rear propeller shaft tubes.
Runout:
Limit 0.6 mm (0.024 in)
G3M0020
4) Center bearing free play
While holding propeller shaft near center bearing
with your hand, move it up and down, and left and
right to check for any abnormal bearing free play.
S3M0024
B: REMOVAL
NOTE:
Before removing propeller shaft, wrap metal parts
with a cloth or rubber material.
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to ªNº.
3) Release the parking brake.
4) Jack-up vehicle and support it with sturdy
racks.
5) Remove rear exhaust pipe. [W2A0].>
6) Remove muffler.
7) Remove front exhaust cover.
G3M0021
8) Remove differential mount front cover.
G3M0022
12
3-4[W1A0]SERVICE PROCEDURE
1. Propeller Shaft

9) Remove the four bolts which hold propeller
shaft to rear differential.
NOTE:
IPut matching mark on affected parts before
removal.
IRemove all but one bolt.
G3M0782
10) Remove the two bolts which hold center bear-
ing to vehicle body.
S3M0028
11) Remove propeller shaft from transmission.
CAUTION:
Be sure not to damage oil seals and the fric-
tional surface of sleeve yoke.
NOTE:
IBe sure to use an empty oil can to catch oil
flowing out when removing propeller shaft.
IBe sure to plug the opening in transmission after
removal of propeller shaft.
S3M0029A
12) Install the extension cap to transmission.
G3M0026
C: DISASSEMBLY AND ASSEMBLY
NOTE:
Do not disassemble propeller shaft. It is a single
unit.
D: INSPECTION
NOTE:
Do not disassemble propeller shaft. Check the fol-
lowing and replace if necessary.
1) Tube surfaces for dents or cracks
2) Splines for deformation or abnormal wear
3) Joints for non-smooth operation or abnormal
noise
4) Center bearing for free play, noise or non-
smooth operation
5) Oil seals for abnormal wear or damage
6) Center bearing for breakage or damage to rub-
ber boot
E: INSTALLATION
1) Insert sleeve yoke into transmission and attach
center bearing to vehicle body.
Tightening torque:
52
±5 N´m (5.3±0.5 kg-m, 38.3±3.6 ft-lb)
S3M0028
13
[W1E0]3-4SERVICE PROCEDURE
1. Propeller Shaft

2) Align matching marks and connect flange yoke
and rear differential.
Tightening torque:
31
±8 N´m (3.2±0.8 kg-m, 23.1±5.8 ft-lb)
G3M0782
3) Install differential mount front cover.
Tightening torque:
88
±10 N´m (9.0±1.0 kg-m, 65±7 ft-lb)
G3M0022
4) Install front exhaust cover.
5) Install rear exhaust pipe and muffler.
G3M0021
2. Rear Differential
A: ON-CAR SERVICE
1. FRONT OIL SEAL
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to ªNº.
3) Release the parking brake.
4) Remove oil drain plug, and drain gear oil.
B3M0316A
5) Jack-up rear wheels and support the vehicle
body with sturdy racks.
6) Remove propeller shaft from body. [W1B0].>
CAUTION:
Wrap metal parts with a cloth or rubber mate-
rial to prevent damage from adjacent metal
parts.
S3M0028
7) Remove self-locking nut while holding compan-
ion flange with ST.
ST 498427200 FLANGE WRENCH
G3M0034
14
3-4[W2A1]SERVICE PROCEDURE
2. Rear Differential

2) Align matching marks and connect flange yoke
and rear differential.
Tightening torque:
31
±8 N´m (3.2±0.8 kg-m, 23.1±5.8 ft-lb)
G3M0782
3) Install differential mount front cover.
Tightening torque:
88
±10 N´m (9.0±1.0 kg-m, 65±7 ft-lb)
G3M0022
4) Install front exhaust cover.
5) Install rear exhaust pipe and muffler.
G3M0021
2. Rear Differential
A: ON-CAR SERVICE
1. FRONT OIL SEAL
1) Disconnect ground cable from battery.
2) Move selector lever or gear shift lever to ªNº.
3) Release the parking brake.
4) Remove oil drain plug, and drain gear oil.
B3M0316A
5) Jack-up rear wheels and support the vehicle
body with sturdy racks.
6) Remove propeller shaft from body. [W1B0].>
CAUTION:
Wrap metal parts with a cloth or rubber mate-
rial to prevent damage from adjacent metal
parts.
S3M0028
7) Remove self-locking nut while holding compan-
ion flange with ST.
ST 498427200 FLANGE WRENCH
G3M0034
14
3-4[W2A1]SERVICE PROCEDURE
2. Rear Differential

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