Subaru 2002 IMPREZA Service Manual page 804

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EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

B: INSTALLATION

Replace gaskets with new ones.

1) Install the front catalytic converter to front ex-

Tightening torque:

30 N·m (3.1 kgf-m, 22.4 ft-lb)

2) Install the front and center exhaust pipe assem-

bly to the vehicle. And temporarily tighten the bolt

which installs center exhaust pipe to hanger brack-

3) Tighten the nuts which hold front exhaust pipe

onto cylinder heads.

Tightening torque:

30 N·m (3.1 kgf-m, 22.4 ft-lb)

FRONT CATALYTIC CONVERTER

EC(w/oOBD)-4

4) Tighten the bolts which install front and center

exhaust pipe assembly to rear exhaust pipe.

Tightening torque:

18 N·m (1.8 kgf-m, 13.0 ft-lb)

5) Tighten the bolt which holds front and center ex-

haust pipe assembly to hanger bracket.

Tightening torque:

35 N·m (3.6 kgf-m, 26.0 ft-lb)

6) Install the under cover.

7) Lower the vehicle.

8) Connect the front oxygen sensor connector.

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2001 impreza