1999 SUBARU LEGACY front differential

Gear ratio Stamp or label on rear differential
2500 cc MT 4.111
B3M0127
2500 cc AT 4.444
B3M0421
C: ADJUSTING PARTS
1. REAR DIFFERENTIAL (T-TYPE)
Front and rear bearing preload at com-
panion flange bolt holeNew bearing19.6 Ð 28.4 N
(2.0 Ð 2.9 kg, 4.4 Ð6.4 lb)
Used bearing8.34 Ð 16.67 N
(0.85 Ð 1.70 kg, 1.87 Ð 3.75 lb)
Preload adjusting spacerPart No. Length
383695201 56.2 mm (2.213 in)
383695202 56.4 mm (2.220 in)
383695203 56.6 mm (2.228 in)
383695204 56.8 mm (2.236 in)
383695205 57.0 mm (2.244 in)
383695206 57.2 mm (2.252 in)
Preload adjusting washerPart No. Thickness
383705200 2.59 mm (0.1020 in)
383715200 2.57 mm (0.1012 in)
383725200 2.55 mm (0.1004 in)
383735200 2.53 mm (0.0996 in)
383745200 2.51 mm (0.0988 in)
383755200 2.49 mm (0.0980 in)
383765200 2.47 mm (0.0972 in)
383775200 2.45 mm (0.0965 in)
383785200 2.43 mm (0.0957 in)
383795200 2.41 mm (0.0949 in)
383805200 2.39 mm (0.0941 in)
383815200 2.37 mm (0.0933 in)
383825200 2.35 mm (0.0925 in)
383835200 2.33 mm (0.0917 in)
383845200 2.31 mm (0.0909 in)
4
3-4[S2C1]SPECIFICATIONS AND SERVICE DATA
2. Rear Differential

Pinion height adjusting shimPart No. Thickness
383495200 3.09 mm (0.1217 in)
383505200 3.12 mm (0.1228 in)
383515200 3.15 mm (0.1240 in)
383525200 3.18 mm (0.1252 in)
383535200 3.21 mm (0.1264 in)
383545200 3.24 mm (0.1276 in)
383555200 3.27 mm (0.1287 in)
383565200 3.30 mm (0.1299 in)
383575200 3.33 mm (0.1311 in)
383585200 3.36 mm (0.1323 in)
383595200 3.39 mm (0.1335 in)
383605200 3.42 mm (0.1346 in)
383615200 3.45 mm (0.1358 in)
383625200 3.48 mm (0.1370 in)
383635200 3.51 mm (0.1382 in)
383645200 3.54 mm (0.1394 in)
383655200 3.57 mm (0.1406 in)
383665200 3.60 mm (0.1417 in)
383675200 3.63 mm (0.1429 in)
383685200 3.66 mm (0.1441 in)
Side gear backlash Ð 0.10 Ð 0.20 mm (0.0039 Ð 0.0079 in)
Side gear thrust washerPart No. Thickness
383445201 0.75 Ð 0.80 mm (0.0295 Ð 0.0315 in)
383445202 0.80 Ð 0.85 mm (0.0315 Ð 0.0335 in)
383445203 0.85 Ð 0.90 mm (0.0335 Ð 0.0354 in)
Side bearing standard width Ð 20.00 mm (0.7874 in)
Side bearing retainer shimPart No. Thickness
383475201 0.20 mm (0.0079 in)
383475202 0.25 mm (0.0098 in)
383475203 0.30 mm (0.0118 in)
383475204 0.40 mm (0.0157 in)
383475205 0.50 mm (0.0197 in)
Crown gear to drive pinion backlash
Limit0.10 Ð 0.20 mm (0.0039 Ð 0.0079 in)
Crown gear runout on its back surface 0.05 mm (0.0020 in)
Oil capacity0.8(0.8 US qt, 0.7 Imp qt)
2. REAR DIFFERENTIAL (VA-TYPE)
Front and rear bearing preload at
companion flange bolt holeNew bearing12.7 Ð 32.4 N
(1.3 Ð 3.3 kg, 2.9 Ð 7.3 lb)
Preload adjusting spacerPart No. Length mm (in)
32288AA040
32288AA050
31454AA100
32288AA060
31454AA110
32288AA070
31454AA120
32288AA080
32288AA09052.3 (2.059)
52.5 (2.067)
52.6 (2.071)
52.7 (2.075)
52.8 (2.079)
52.9 (2.083)
53.0 (2.087)
53.1 (2.091)
53.3 (2.098)
5
[S2C2]3-4SPECIFICATIONS AND SERVICE DATA
2. Rear Differential

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

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