1999 SUBARU LEGACY Service Repair Manual

1. Front Catalytic Converter
A: REMOVAL
1) Disconnect battery ground cable.
B2M1723
2) Disconnect front oxygen sensor connector.
B2M1979A
S2M0127A
3) Disconnect rear oxygen sensor connector.
(2500 cc California spec. vehicles)
S2M0128
4) Lift-up the vehicle.
5) Disconnect rear oxygen sensor connector.
(Except 2500 cc California spec. vehicles)
B2M0312
6) Separate center exhaust pipe from front cata-
lytic converter.
S2M0052
7) Remove bolts which hold front exhaust pipe
onto cylinder heads.
CAUTION:
Be careful not to pull down front exhaust pipe
and center exhaust pipe.
S2M0236
2
2-1[W1A0]SERVICE PROCEDURE
1. Front Catalytic Converter

8) Separate front catalytic converter from front
exhaust pipe.
S2M0053
B: INSTALLATION
CAUTION:
Replace gaskets with new ones.
1) Install front catalytic converter to front exhaust
pipe and center exhaust pipe.
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)
S2M0236
3) Install center exhaust pipe to front catalytic con-
verter.
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
3
[W1B0]2-1SERVICE PROCEDURE
1. Front Catalytic Converter

7) Connect front oxygen sensor connector.
B2M1979A
S2M0127A
8) Connect battery ground cable.
B2M1723
2. Rear Catalytic Converter
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
4
2-1[W2A0]SERVICE PROCEDURE
2. Rear Catalytic Converter

7) Connect front oxygen sensor connector.
B2M1979A
S2M0127A
8) Connect battery ground cable.
B2M1723
2. Rear Catalytic Converter
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
4
2-1[W2A0]SERVICE PROCEDURE
2. Rear Catalytic Converter

5) Separate 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.
B2M0313
B: INSTALLATION
CAUTION:
Replace gaskets with new ones.
1) Install center exhaust pipe and rear catalytic
converter assembly.
Temporarily tighten bolt which installs center
exhaust pipe to hanger bracket.
B2M0313
2) Install center exhaust pipe to front catalytic con-
verter.
Tightening torque:
35
±5 N´m (3.6±0.5 kg-m, 26.0±3.6 ft-lb)
S2M0052
3) 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
4) 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
5
[W2B0]2-1SERVICE PROCEDURE
2. Rear Catalytic Converter

5) Connect rear oxygen sensor connector. (Except
2500 cc California spec. vehicles)
B2M0312
6) Lower the vehicle.
7) Connect battery ground cable.
B2M1723
3. Canister
A: REMOVAL AND INSTALLATION
1) Lift-up the vehicle.
2) Loosen two clamps which hold two canister
hoses.
B2M2381A
3) Disconnect evaporation three hoses from can-
ister.
B2M2383
4) Remove canister from body.
S2M0142
6
2-1[W3A0]SERVICE PROCEDURE
3. Canister

5) Connect rear oxygen sensor connector. (Except
2500 cc California spec. vehicles)
B2M0312
6) Lower the vehicle.
7) Connect battery ground cable.
B2M1723
3. Canister
A: REMOVAL AND INSTALLATION
1) Lift-up the vehicle.
2) Loosen two clamps which hold two canister
hoses.
B2M2381A
3) Disconnect evaporation three hoses from can-
ister.
B2M2383
4) Remove canister from body.
S2M0142
6
2-1[W3A0]SERVICE PROCEDURE
3. Canister

5) Installation is in the reverse order of removal.
Tightening torque:
22.5
±7 N´m (2.3±0.7 kg-m, 16.6±5.1 ft-lb)
S2M0143A
4. Purge Control Solenoid
Valve
A: REMOVAL AND INSTALLATION
1) Disconnect battery ground cable.
B2M1723
2) Remove air cleaner assembly and air intake
duct (A) and (B) as a unit. (2200 cc California spec.
vehicles)
B2M2320
3) Remove air intake chamber and air intake duct
as a unit. (Except 2200 cc California spec. vehicles
and 2500 cc Model)

B2M2301
7
[W4A0]2-1SERVICE PROCEDURE
4. Purge Control Solenoid Valve