1999 SUBARU LEGACY rear

4. Rear Drive Shaft Assembly
Type of axle shaft assemblySHAFT
No. of identification grooves
on shaft
79AC None
79AC-RH 2 (Two)
79AC-LH 1 (One)
B4M1304A
5. Application Table
Model Power unitFront drive shaft Rear drive shaft
5MT 4AT 5MT 4AT
AWD 2200 cc BJ87L+DOJ82RPC-F BJ87L+SFJ82 79AC-RH, 79AC-LH 79AC
AWD 2500 cc BJ87L+DOJ82RPC-F BJ87L+SFJ82 79AC-RH, 79AC-LH 79AC-RH, 79AC-LH
4
4-2[S400]SPECIFICATIONS AND SERVICE DATA
4. Rear Drive Shaft Assembly

4. Rear Drive Shaft Assembly
Type of axle shaft assemblySHAFT
No. of identification grooves
on shaft
79AC None
79AC-RH 2 (Two)
79AC-LH 1 (One)
B4M1304A
5. Application Table
Model Power unitFront drive shaft Rear drive shaft
5MT 4AT 5MT 4AT
AWD 2200 cc BJ87L+DOJ82RPC-F BJ87L+SFJ82 79AC-RH, 79AC-LH 79AC
AWD 2500 cc BJ87L+DOJ82RPC-F BJ87L+SFJ82 79AC-RH, 79AC-LH 79AC-RH, 79AC-LH
4
4-2[S400]SPECIFICATIONS AND SERVICE DATA
4. Rear Drive Shaft Assembly

2. Rear Axle
H4M1000B
(1) Circlip (2200 cc AT vehicles)
(2) Baffle plate (DOJ)
(3) Outer race (DOJ)
(4) Snap ring
(5) Inner race
(6) Ball
(7) Cage
(8) Circlip
(9) Boot band(10) Boot (DOJ)
(11) Boot (BJ)
(12) BJ ASSY
(13) Oil seal (IN. No. 2)
(14) Oil seal (IN. No. 3)
(15) Housing
(16) Bearing
(17) Snap ring
(18) Oil seal (OUT)(19) Tone wheel
(20) Hub bolt
(21) Hub
(22) Axle nut
Tightening torque: N´m (kg-m, ft-lb)
T1:
13±3 (1.3±0.3, 9.4±2.2)
T2:186±20 (19±2, 137±14)
8
4-2[C200]COMPONENT PARTS
2. Rear Axle

11) Install wheel and tighten wheel nuts to speci-
fied torque.
Tightening torque:
88
±10 N´m (9±1 kg-m, 65±7 ft-lb)
2. Rear Axle
A: REMOVAL
1. DISC BRAKE
1) Disconnect ground cable from battery.
2) Jack-up vehicle, and remove rear wheel cap
and wheels.
CAUTION:
Be sure to loosen and retighten axle nut after
removing wheel from vehicle. Failure to follow
this rule may damage wheel bearings.
3) Unlock axle nut.
4) Remove axle nut using a socket wrench.
5) Return parking brake lever and loosen adjust-
ing nut.
B4M0050A
6) Remove disc brake caliper from back plate, and
suspend it from strut using a piece of wire.
G4M0240
7) Remove disc rotor from hub.
NOTE:
If disc rotor seizes up within hub, drive it out by
installing an 8-mm bolt into bolt hole in disc rotor.
14
4-2[W2A1]SERVICE PROCEDURE
2. Rear Axle

11) Install wheel and tighten wheel nuts to speci-
fied torque.
Tightening torque:
88
±10 N´m (9±1 kg-m, 65±7 ft-lb)
2. Rear Axle
A: REMOVAL
1. DISC BRAKE
1) Disconnect ground cable from battery.
2) Jack-up vehicle, and remove rear wheel cap
and wheels.
CAUTION:
Be sure to loosen and retighten axle nut after
removing wheel from vehicle. Failure to follow
this rule may damage wheel bearings.
3) Unlock axle nut.
4) Remove axle nut using a socket wrench.
5) Return parking brake lever and loosen adjust-
ing nut.
B4M0050A
6) Remove disc brake caliper from back plate, and
suspend it from strut using a piece of wire.
G4M0240
7) Remove disc rotor from hub.
NOTE:
If disc rotor seizes up within hub, drive it out by
installing an 8-mm bolt into bolt hole in disc rotor.
14
4-2[W2A1]SERVICE PROCEDURE
2. Rear Axle

8) Disconnect parking brake cable end.
G4M0241
9) Remove bolts which secure trailing link assem-
bly to rear housing.
CAUTION:
Discard old self-locking nut. Replace with a
new one.
G4M0246
10) Remove bolts which secure lateral link assem-
bly to rear housing.
CAUTION:
Discard old self-locking nut. Replace with a
new one.
G4M0245
11) Disengage BJ from housing splines, and
remove rear drive shaft assembly. If it is hard to
remove, use STs.
ST1 926470000 AXLE SHAFT PULLER
ST2 927140000 PLATE
CAUTION:
IBe careful not to damage oil seal lip when
removing rear drive shaft.
IWhen rear drive shaft is to be replaced, also
replace inner oil seal with a new one.
G4M0247
12) Remove rear ABS sensor from back plate
(only vehicle equipped with ABS).
H4M1139A
13) Remove bolts which secure rear housing to
strut, and separate the two.
G4M0249
2. DRUM BRAKE
1) Disconnect ground cable from battery.
2) Jack-up vehicle, and remove rear wheel cap
and wheels.
15
[W2A2]4-2SERVICE PROCEDURE
2. Rear Axle

CAUTION:
Be sure to loosen and retighten axle nut after
removing wheel from vehicle. Failure to follow
this rule may damage wheel bearings.
3) Unlock axle nut.
4) Remove axle nut using a socket wrench.
5) Return parking brake lever and loosen adjust-
ing nut.
B4M0050A
6) Remove brake drum from hub.
7) If it is difficult to remove brake drum, remove
adjusting hole cover from back plate, and then turn
adjusting screw using a slot-type screwdriver until
brake shoe separates from the drum.
G4M0242
NOTE:
If brake drum is difficult to remove, drive it out by
installing an 8-mm bolt into bolt hole in brake drum.
G4M0243
8) Using a flare-nut wrench, disconnect brake pipe
from wheel cylinder.
CAUTION:
Cover open end of wheel cylinder to prevent
entry of foreign particles.
G4M0244
9) Disconnect parking brake cable end.
G4M0241
10) Remove bolts which secure trailing link
assembly to rear housing.
CAUTION:
Discard old self-locking nut. Replace with a
new one.
G4M0246
16
4-2[W2A2]SERVICE PROCEDURE
2. Rear Axle

11) Remove bolts which secure lateral link assem-
bly to rear housing.
CAUTION:
Discard old self-locking nut. Replace with a
new one.
G4M0245
12) Disengage BJ from housing splines, and
remove rear drive shaft assembly. If it is hard to
remove, use STs.
ST1 926470000 AXLE SHAFT PULLER
ST2 927140000 PLATE
CAUTION:
IBe careful not to damage oil seal lip when
removing rear drive shaft.
IWhen rear drive shaft is to be replaced, also
replace inner oil seal with a new one.
G4M0247
13) Remove bolts which secure rear housing to
strut, and separate the two.
G4M0249
B: DISASSEMBLY
1) Using ST1 and ST2, remove hub from rear
housing.
ST1 927080000 HUB STAND
ST2 927420000 HUB REMOVER
G4M0250
2) Remove back plate from rear housing.
3) Using a standard screwdriver, remove outer
and inner oil seals.
CAUTION:
Use new oil seals.
4) Using flat bladed screwdriver, remove snap
ring.
H4M1003
5) Using ST1 and ST2, remove bearing by press-
ing inner race.
ST1 927430000 HOUSING STAND
ST2 927440000 BEARING REMOVER
CAUTION:
IDo not remove bearing unless damaged.
IDo not re-use bearing after removal.
G4M0252
17
[W2B0]4-2SERVICE PROCEDURE
2. Rear Axle