Subaru Legacy 2004 Service Manual page 328

EXHAUST
11) Remove the front oxygen (A/F) sensor and rear
oxygen sensor. <Ref. to FU(H4SO 2.0)-32, RE-
MOVAL, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H4SO 2.0)-33, REMOVAL, Rear Oxygen Sen-
sor.> or <Ref. to FU(H4SO 2.5)-34, REMOVAL,
Front Oxygen (A/F) Sensor.> <Ref. to FU(H4SO
2.5)-35, REMOVAL, Rear Oxygen Sensor.>
B: INSTALLATION
1) Install the front oxygen (A/F) sensor and rear ox-
ygen sensor. <Ref. to FU(H4SO 2.0)-32, INSTAL-
LATION, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H4SO 2.0)-33, INSTALLATION, Rear Oxygen
Sensor.> or <Ref. to FU(H4SO 2.5)-34, INSTALLA-
TION, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H4SO 2.5)-35, INSTALLATION, Rear Oxygen
Sensor.>
2) Install the front exhaust pipe to center exhaust
pipe.
NOTE:
Use a new gasket.
Tightening torque:
!
40.8 N m (4.2 kgf-m, 30.1 ft-lb)
3) Install the front and center exhaust pipe assem-
bly to the vehicle.
4) Temporarily tighten the bolt which holds the cen-
ter exhaust pipe to hanger bracket.
Front Exhaust Pipe
5) Install the nuts to cylinder head which hold front
exhaust pipe.
Tightening torque:
30 N
6) Install the under cover.
7) Tighten the bolts which install the center exhaust
pipe to rear exhaust pipe.
Tightening torque:
18 N
8) Tighten the bolt which holds the center exhaust
EX-00217
pipe to hanger bracket.
Tightening torque:
35 N
EX-00216
EX(H4SO 2.0)-8
!
m (3.1 kgf-m, 22.4 ft-lb)
!
m (1.8 kgf-m, 13.0 ft-lb)
!
m (3.6 kgf-m, 26.0 ft-lb)
EX-00215
EX-00214
EX-00216