1999 SUBARU LEGACY Service Repair Manual

1. Propeller Shaft
B3M0852A
(1) Propeller shaft
(2) Rear differential (VA-type)
(3) Rear differential (T-type)Tightening torque: N´m (kg-m, ft-lb)
T1:
31±8 (3.2±0.8, 23.1±5.8)
T2:52±5 (5.3±0.5, 38.3±3.6)
8
3-4[C100]COMPONENT PARTS
1. Propeller Shaft

2. Rear Differential Assembly
A: T-TYPE
B3M0130C
(1) Pinion crown gear set
(2) Pinion height adjusting washer
(3) Rear bearing
(4) Bearing preload adjusting spacer
(5) Bearing preload adjusting
washer
(6) Differential carrier
(7) Front bearing
(8) Spacer
(9) Pilot bearing
(10) Front oil seal
(11) Companion flange
(12) Self-locking nut
(13) Side bearing(14) O-ring
(15) Side bearing retainer shim
(16) Side bearing retainer
(17) Side oil seal
(18) Side gear thrust washer
(19) Side gear
(20) Pinion mate gear
(21) Pinion mate gear washer
(22) Pinion shaft lock pin
(23) Circlip
(24) Pinion mate shaft
(25) Air breather cap
(26) Stud bolt
(27) Oil filler plug(28) Oil drain plug
(29) Rear cover
(30) Differential case
Tightening torque: N´m (kg-m, ft-lb)
T1:
10.3±1.5 (1.05±0.15, 7.6±1.1)
T2:29.4±4.9 (3.00±0.50, 21.7±3.6)
T3:44.1±3.9 (4.50±0.40, 32.5±2.9)
T4:103.0±9.8 (10.50±1.00,
75.9
±7.2)
T5:181.4±14.7 (18.50±1.50,
133.8
±10.8)
9
[C2A0]3-4COMPONENT PARTS
2. Rear Differential Assembly

B: VA-TYPE
H3M1663A
(1) Pinion crown gear set
(2) Pinion height adjusting shim
(3) Rear bearing
(4) Bearing preload adjusting spacer
(5) Bearing preload adjusting
washer
(6) Differential carrier
(7) Front bearing
(8) Collar
(9) Pilot bearing
(10) Front oil seal
(11) Companion flange
(12) Self-locking nut(13) Lock plate
(14) Side bearing
(15) O-ring
(16) Axle shaft holder
(17) Side oil seal
(18) Side gear thrust washer
(19) Side gear
(20) Pinion mate gear
(21) Pinion shaft lock pin
(22) Differential case
(23) Pinion mate shaft
(24) Air breather cap
(25) Stud bolt(26) Gasket
(27) Oil filler plug
(28) Oil drain plug
(29) Rear cover
Tightening torque: N´m (kg-m, ft-lb)
T1:
25±3 (2.5±0.3, 18.1±2.2)
T2:25±2 (2.5±0.2, 18.1±1.4)
T3:34±4 (3.5±0.4, 25.3±2.9)
T4:62±5 (6.3±0.5, 45.6±3.6)
T5:188±26 (19.2±2.7, 139±20)
10
3-4[C2B0]COMPONENT PARTS
2. Rear Differential Assembly

3. Rear Differential Mounting System
B3M0517C
(1) Plate
(2) Crossmember
(3) Rear bushing
(4) Differential mount lower bracket
(5) Differential mount bracket (OUT-
BACK model)
(6) Differential mount bracket
(7) Boss (OUTBACK model)
(8) Stopper (OUTBACK model)(9) Stopper
(10) Front bushing
(11) Dynamic damper (2500 cc MT
model)
(12) Differential mount front cover
(13) Differential front memberTightening torque: N´m (kg-m, ft-lb)
T1:
20±5 (2.0±0.5, 14.5±3.6)
T2:32±8 (3.3±0.8, 23.9±5.8)
T3:64±8 (6.5±0.8, 47.0±5.8)
T4:69±8 (7.0±0.8, 50.6±5.8)
T5:69±10 (7.0±1.0, 51.0±7.2)
T6:88±10 (9.0±1.0, 65.0±7.2)
T7:98±10 (10.0±1.0, 72.0±7.2)
11
[C300]3-4COMPONENT PARTS
3. Rear Differential Mounting System

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