Catalytic Converter - LH Manifold

Catalytic Converter - LH Manifold

WARNING: Before beginning any service procedure, REFER to Safety Warnings . Failure to follow this instruction may result in serious personal injury.

Removal

NOTICE: Do not excessively bend, twist or allow the exhaust to hang from the flexible pipe or damage to the exhaust system may occur.

NOTE: Always install new nuts, studs and gaskets. Clean flange faces prior to new gasket installation to make sure of correct sealing.

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, REFER to Lifting Points .

2. Remove the engine appearance cover.

3. Remove the LH (Left Hand) HO2S (Heated Oxygen Sensor). REFER to Heated Oxygen Sensor (HO2S) - 3.5L Ti-VCT .

4. Remove the 3 heat shield bolts and the heat shield.

5. Disconnect the LH (Left Hand) CMS (Catalyst Monitor Sensor) electrical connector.

6. Remove and discard the top 3 LH (Left Hand) catalytic converter manifold-to-cylinder head nuts.

7. Remove the exhaust Y-pipe. REFER to Exhaust Y-Pipe .

8. Remove and discard the lower 3 LH (Left Hand) catalytic converter manifold-to-cylinder head nuts.

- Remove the LH (Left Hand) catalytic converter manifold and discard the gasket.

9. Remove and discard the 6 LH (Left Hand) catalytic converter manifold-to-cylinder head studs.

Installation

NOTICE: Do not excessively bend, twist or allow the exhaust to hang from the flexible pipe or damage to the exhaust system may occur.

NOTE: Exhaust fasteners are of a torque prevailing design. Use only new fasteners with the same part number as the original. Torque values must be used as specified during reassembly to make sure of correct retention of exhaust components.

1. Install 6 new LH (Left Hand) catalytic converter manifold-to-cylinder head studs.
- Tighten to 12 Nm (106 lb-in).

2. Install a new gasket, the LH (Left Hand) catalytic converter manifold and 3 new lower LH (Left Hand) catalytic converter manifold-to-cylinder head nuts.
- Tighten to 25 Nm (18 lb-ft).

3. Install the 3 new upper LH (Left Hand) catalytic converter manifold-to-cylinder head nuts.
- Tighten to 25 Nm (18 lb-ft).

4. Install the exhaust Y-pipe. REFER to Exhaust Y-Pipe .

5. Connect the LH (Left Hand) CMS (Catalyst Monitor Sensor) electrical connector.

6. Install the heat shield and the 3 heat shield bolts.
- Tighten to 12 Nm (106 lb-in).

7. Install the LH (Left Hand) HO2S (Heated Oxygen Sensor). REFER to Heated Oxygen Sensor (HO2S) - 3.5L Ti-VCT .

8. Install the engine appearance cover.

9. Start engine and check for exhaust leaks.