Exhaust Manifold Pipe Replacement - Rear

REAR EXHAUST MANIFOLD PIPE





1. Remove exhaust manifold pipe heat shield.





NOTICE: Do not apply grease or silicon products to the heated oxygen sensor. Do not alter the wiring in any way. The wires carry air reference to the sensor.

2. Remove heated oxygen sensor electrical connector.
3. Remove heated oxygen sensor.

CAUTION: MAKE SURE VEHICLE IS PROPERLY SUPPORTED AND SQUARELY POSITIONED ON HOIST.

4. Raise vehicle on hoist.





5. Remove rear exhaust manifold pipe to exhaust manifold nuts





6. Remove rear exhaust manifold pipe to front exhaust manifold pipe attachment bolts.





7. Remove rear exhaust manifold pipe to resonator bolts.
8. Remove rear exhaust manifold pipe from vehicle.

INSTALLATION

NOTICE: Do not tighten fasteners at this time.





1. Install exhaust manifold pipe to exhaust manifold gasket, position pipe into vehicle.
2. Install rear exhaust manifold pipe to exhaust manifold nuts.





3. Position gasket and install front exhaust manifold pipe to rear exhaust manifold pipe bolts.





4. Position gasket and install exhaust manifold pipe to resonator bolts and tighten
Torque:
Exhaust Manifold Pipe Bolts: 20 Nm (15 ft. lbs.)
5. Tighten exhaust manifold pipe to exhaust manifold nuts
Torque:
Exhaust Manifold Pipe-to-Exhaust Manifold Nuts: 30 Nm (25 ft. lbs.)
6. Tighten rear exhaust manifold pipe to front exhaust manifold pipe bolts
Torque:
Exhaust Manifold Pipe Bolts: 20 Nm (15 ft. lbs.)





7. Lower vehicle from hoist

NOTICE: Always use a pickle-based anti-seized compound Saturn PIN 21485279 (or equivalent) on the threads of the oxygen sensor. If the oxygen sensor is replaced, do not apply anti-seize to the new sensor. New sensors have anti-seize pre-applied. Never use silicon product; silicon products will cause damage to oxygen sensor.

8. Install heated oxygen sensor
Torque:
Oxygen Sensors (Lower Exhaust Pipe): 45 Nm (33 ft. lbs.)
9. Connect heated oxygen sensor harness connector





10. Install exhaust manifold pipe heat shield
Torque:
Exhaust Manifold Pipe Heat Shield Bolts: 8 Nm (71 inch lbs.)
11. Start engine and check for exhaust leaks