Exhaust Manifold Replacement - Left Side LY7
Removal Procedure
Warning: Refer to Exhaust Service Warning in the Preface section.
Warning: Refer to Protective Goggles and Glove Warning in the Preface section.
- Remove the exhaust manifold heat shield. Refer to
Exhaust Manifold Heat Shield Replacement - Left Side.
- Remove the oil level indicator. Refer to
Oil Level Indicator and Tube Replacement.
- Remove the catalytic converter nuts.
- Remove the exhaust manifold bolts.
Note: Do not reuse the gasket.
- Remove the exhaust manifold and discard the exhaust manifold gasket.
- Clean and inspect the exhaust manifold. Refer to
Exhaust Manifold Cleaning and Inspection - Left Side.
Installation Procedure
Note: Inspect the catalytic converter seal/heat shield sealing surface. Replace the seal/heat shield if the sealing surface is worn or damaged.
- Install the catalytic converter seal/heat shield to the catalytic converter.
- Install a NEW exhaust manifold gasket to the exhaust manifold.
- Install the exhaust manifold with the gasket to the catalytic converter and the cylinder head.
Caution: Refer to Fastener Caution in the Preface section.
- Install the exhaust manifold bolts and tighten to
20 N·m (15 lb ft).
- Install the catalytic converter nuts and tighten to
50 N·m (37 lb ft).
- Install the oil level indicator. Refer to
Oil Level Indicator and Tube Replacement.
- Install the exhaust manifold heat shield. Refer to
Exhaust Manifold Heat Shield Replacement - Left Side.
Exhaust Manifold Replacement - Left Side V8 and LHD
Removal Procedure
Warning: Refer to Exhaust Service Warning in the Preface section.
Warning: Refer to Protective Goggles and Glove Warning in the Preface section.
- Remove the air cleaner housing assembly. Refer to
Air Cleaner Assembly Replacement.
- Remove the nut securing the air conditioning (A/C) lines to the left hand shock tower.
Position the lines aside to provide tool access to the exhaust manifold shield front bolt.
- Remove the front upper heat shield bolt.
- Disconnect the master cylinder electrical connector.
- Remove the master cylinder mounting nuts.
Position the master cylinder towards the engine to gain tool access to the exhaust manifold shield rear bolt.
- Remove the rear upper heat shield bolt.
- Disconnect both Bank 2 heated oxygen sensor pigtail connectors from the wiring harness connector.
- Remove the power steering gear. Refer to
Steering Gear Replacement.
- Remove the lower intermediate steering shaft. Refer to
Lower Intermediate Steering Shaft Replacement.
- Remove the exhaust system. Refer to
Exhaust System Replacement.
- Remove the Bank 2, Sensor 1 heated oxygen sensor. Refer to
Heated Oxygen Sensor Replacement - Bank 2 Sensor 1.
- Remove the remaining exhaust manifold heat shield bolt and remove the shield.
- Remove the left exhaust manifold bolts and nuts. Discard the exhaust manifold bolts.
- Remove the exhaust manifold studs, if necessary.
- Remove the left exhaust manifold and gasket from the engine. Do not reuse the gasket.
- Clean and inspect the left exhaust manifold. Refer to
Exhaust Manifold Cleaning and Inspection - Left Side.
Installation Procedure
- Use a NEW exhaust manifold gasket.
- Position the left exhaust manifold and gasket to the left cylinder head.
Caution: Refer to Fastener Caution in the Preface section.
- Install the left exhaust manifold studs, nuts and NEW bolts.
• | Tighten the exhaust manifold studs to
6 N·m (53 lb in). |
• | Tighten the exhaust manifold nuts to
25 N·m (18 lb ft). |
• | Tighten the exhaust manifold bolts to
25 N·m (18 lb ft). |
- Install the exhaust manifold heat shield to the manifold with the lower bolt and tighten to
10 N·m (89 lb in).
- Install the Bank 2, Sensor 1 heated oxygen sensor. Refer to
Heated Oxygen Sensor Replacement - Bank 2 Sensor 1.
- Install the exhaust system. Refer to
Exhaust System Replacement.
- Install the lower intermediate steering shaft. Refer to
Lower Intermediate Steering Shaft Replacement.
- Install the power steering gear. Refer to
Steering Gear Replacement.
- Lower the vehicle.
- Connect the heated oxygen sensor pigtail connectors to the wiring harness connector.
- Install the rear upper heat shield bolt and tighten to
10 N·m (89 lb in).
- Install the master cylinder and connect the master cylinder electrical connector. Refer to
Master Cylinder Replacement.
- Install the front upper heat shield bolt and tighten to
10 N·m (89 lb in).
- Install the nut securing the A/C lines to the left hand shock tower and tighten to
10 N·m (89 lb in).
- Install the air cleaner housing assembly. Refer to
Air Cleaner Assembly Replacement.