1999 SUBARU LEGACY Service Repair Manual

8) Separate front exhaust pipe from front catalytic
converter.
S2M0053
B: INSTALLATION
1) Install front catalytic converter to front exhaust
pipe.
CAUTION:
Replace gaskets with new ones.
Tightening torque:
30
±5 N´m (3.1±0.5 kg-m, 22.4±3.6 ft-lb)
S2M0053
2) Tighten bolts which hold front exhaust pipe onto
cylinder heads.
Tightening torque:
30
±5 N´m (3.1±0.5 kg-m, 22.4±3.6 ft-lb)
3) Install center exhaust pipe to front exhaust
pipe.
Tightening torque:
35
±5 N´m (3.6±0.5 kg-m, 26.0±3.6 ft-lb)
S2M0052
4) Connect rear oxygen sensor connector. (Except
2500 cc California spec. vehicles)
B2M0312
5) Lower the vehicle.
6) Connect rear oxygen sensor connector. (2500
cc California spec. vehicles)
S2M0128
7) Connect front oxygen sensor connector.
B2M1979A
S2M0127A
6
2-9[W1B0]SERVICE PROCEDURE
1. Front Exhaust Pipe

8) Connect battery ground cable.
B2M1723
2. Center Exhaust Pipe
A: REMOVAL
1) Disconnect battery ground cable.
B2M1723
2) Lift-up the vehicle.
3) Disconnect rear oxygen sensor connector.
(Except 2500 cc California spec. vehicles)
B2M0312
4) Separate center exhaust pipe and rear catalytic
converter assembly from rear exhaust pipe.
B2M0055
7
[W2A0]2-9SERVICE PROCEDURE
2. Center Exhaust Pipe

8) Connect battery ground cable.
B2M1723
2. Center Exhaust Pipe
A: REMOVAL
1) Disconnect battery ground cable.
B2M1723
2) Lift-up the vehicle.
3) Disconnect rear oxygen sensor connector.
(Except 2500 cc California spec. vehicles)
B2M0312
4) Separate center exhaust pipe and rear catalytic
converter assembly from rear exhaust pipe.
B2M0055
7
[W2A0]2-9SERVICE PROCEDURE
2. Center Exhaust Pipe

5) eparate center exhaust pipe and rear catalytic
converter assembly from front catalytic converter.
S2M0052
6) Remove center exhaust pipe and rear catalytic
converter assembly from hanger bracket.
CAUTION:
IBe careful not to pull down center exhaust
pipe.
IAfter removing center exhaust pipe, do not
apply excessive pulling force on front catalytic
converter and front exhaust pipe.
B: INSTALLATION
1)
CAUTION:
Replace gaskets with new ones.Install center
exhaust pipe and rear catalytic converter assem-
bly.
S2M0156
2) Temporarily tighten bolt which installs center
exhaust pipe to hanger bracket.
B2M0313
3) Install center exhaust pipe to front catalytic con-
verter.
35±5 N´m (3.6±0.5 kg-m, 26.0±3.6 ft-lb)
Tightening torque:
35
±5 N´m (3.6±0.5 kg-m, 26.0±3.6 ft-lb)
S2M0052
4) Install center exhaust pipe to rear exhaust pipe.
Tightening torque:
18
±5 N´m (1.8±0.5 kg-m, 13.0±3.6 ft-lb)
B2M0055
5) Tighten bolt which holds center exhaust pipe to
hanger bracket.
Tightening torque:
35
±5 N´m (3.6±0.5 kg-m, 26.0±3.6 ft-lb)
B2M0313
8
2-9[W2B0]SERVICE PROCEDURE
2. Center Exhaust Pipe

6) Connect rear oxygen sensor connector. (Except
2500 cc California spec. vehicles)
B2M0312
7) Lower the vehicle.
8) Connect battery ground cable.
B2M1723
3. Rear Exhaust Pipe
A: REMOVAL
1) Separate rear exhaust pipe from center
exhaust pipe.
B2M0055
2) Separate rear exhaust pipe from muffler.
CAUTION:
Be careful not to pull down rear exhaust pipe.
S2M0157
3) Remove rear exhaust pipe bracket from rubber
cushion.
NOTE:
To facilitate removal, apply a coat of SUBARU
CRC or equivalent to pipe bracket in advance.
SUBARU CRC (Part No. 004301003)
S2M0158
9
[W3A0]2-9SERVICE PROCEDURE
3. Rear Exhaust Pipe

6) Connect rear oxygen sensor connector. (Except
2500 cc California spec. vehicles)
B2M0312
7) Lower the vehicle.
8) Connect battery ground cable.
B2M1723
3. Rear Exhaust Pipe
A: REMOVAL
1) Separate rear exhaust pipe from center
exhaust pipe.
B2M0055
2) Separate rear exhaust pipe from muffler.
CAUTION:
Be careful not to pull down rear exhaust pipe.
S2M0157
3) Remove rear exhaust pipe bracket from rubber
cushion.
NOTE:
To facilitate removal, apply a coat of SUBARU
CRC or equivalent to pipe bracket in advance.
SUBARU CRC (Part No. 004301003)
S2M0158
9
[W3A0]2-9SERVICE PROCEDURE
3. Rear Exhaust Pipe

B: INSTALLATION
CAUTION:
Replace gaskets with new ones.
1) Install rear exhaust pipe bracket to rubber cush-
ion.
NOTE:
To facilitate installation, apply a coat of SUBARU
CRC or equivalent to mating area of rubber cush-
ion in advance.
SUBARU CRC (Part No. 004301003)
S2M0158
2) Install rear exhaust pipe to muffler.
Tightening torque:
48
±5 N´m (4.9±0.5 kg-m, 35.4±3.6 ft-lb)
S2M0157
3) Install rear exhaust pipe to center exhaust pipe.
Tightening torque:
18
±5 N´m (1.8±0.5 kg-m, 13.0±3.6 ft-lb)
B2M0055
4. Muffler
A: REMOVAL AND INSTALLATION
1) Separate muffler from rear exhaust pipe.
S2M0157
2) Remove left and right rubber cushions.
CAUTION:
Be careful not to pull down muffler.
NOTE:
To facilitate removal, apply a coat of SUBARU
CRC or equivalent to mating area of rubber cush-
ions in advance.
SUBARU CRC (Part No. 004301003)
B2M0062
3) Remove front rubber cushion, and detach muf-
fler assembly.
NOTE:
To facilitate removal, apply a coat of SUBARU
CRC or equivalent to mating area of rubber cush-
ion in advance.
SUBARU CRC (Part No. 004301003)
B2M0063
10
2-9[W3B0]SERVICE PROCEDURE
4. Muffler

B: INSTALLATION
CAUTION:
Replace gaskets with new ones.
1) Install rear exhaust pipe bracket to rubber cush-
ion.
NOTE:
To facilitate installation, apply a coat of SUBARU
CRC or equivalent to mating area of rubber cush-
ion in advance.
SUBARU CRC (Part No. 004301003)
S2M0158
2) Install rear exhaust pipe to muffler.
Tightening torque:
48
±5 N´m (4.9±0.5 kg-m, 35.4±3.6 ft-lb)
S2M0157
3) Install rear exhaust pipe to center exhaust pipe.
Tightening torque:
18
±5 N´m (1.8±0.5 kg-m, 13.0±3.6 ft-lb)
B2M0055
4. Muffler
A: REMOVAL AND INSTALLATION
1) Separate muffler from rear exhaust pipe.
S2M0157
2) Remove left and right rubber cushions.
CAUTION:
Be careful not to pull down muffler.
NOTE:
To facilitate removal, apply a coat of SUBARU
CRC or equivalent to mating area of rubber cush-
ions in advance.
SUBARU CRC (Part No. 004301003)
B2M0062
3) Remove front rubber cushion, and detach muf-
fler assembly.
NOTE:
To facilitate removal, apply a coat of SUBARU
CRC or equivalent to mating area of rubber cush-
ion in advance.
SUBARU CRC (Part No. 004301003)
B2M0063
10
2-9[W3B0]SERVICE PROCEDURE
4. Muffler