Cylinder Head LH: Removal
WARNING: This page is about a different variant/trim than selected.
NOTE:
During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces that enters the oil passages, coolant passages or the oil pan, can cause engine failure.
NOTE:
If the cylinder head is replaced, a new secondary timing chain tensioner will need to be installed. Refer to Variable Camshaft Timing (VCT) Unit .
- With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview .
- Release the fuel system pressure. Refer to: Fuel System Pressure Release .
- Disconnect the battery ground cable. Refer to: Battery Disconnect and Connect - Vehicles With: Single Battery . Refer to: Battery Disconnect and Connect - Vehicles With: Dual Batteries .
- Remove the LH turbocharger. Refer to: Turbocharger LH .
- Install the transmission crossmember and the bolts.
- Remove the stand and the wooden block.
Use the General Equipment: Wooden Block
Use the General Equipment: Vehicle/Axle Stands
- Remove the LH camshafts. Refer to: Camshafts .
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NOTE: Do not use power tools to remove the bolt or damage to the upper LH timing chain guide may occur.
Remove the bolt and the upper LH timing chain guide.
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- Disconnect the heater hose. Use the General Equipment: Hose Clamp Remover/Installer
- Remove the bolts and the coolant crossover manifold and coolant inlet tube assembly.
- Discard the gaskets.
- Loosen the flare nuts, remove the bolt and the high-pressure fuel tube.
- Disconnect the LH fuel charge harness electrical connector.
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- Detach the wiring harness retainer.
- Remove the stud bolt and ground strap.
- Disconnect the CMP sensors electrical connectors.
- Remove the bolts and the CMP sensors.
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NOTE: If the components are to be reinstalled, they must be installed in the same positions. Mark the components for installation into their original locations.
Remove the valve tappets.
- Inspect and install new components as necessary.
- Remove and discard the M6 bolt.
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NOTE: Place clean shop towels over exposed engine cavities. Carefully remove the towels so foreign material is not dropped into the engine. Any foreign material (including any material created while cleaning gasket surfaces) that enters the oil passages or the oil pan, may cause engine failure.NOTE: Aluminum surfaces are soft and can be scratched easily. Never place the cylinder head gasket surface, unprotected, on a bench surfaceNOTE: The cylinder head bolts must be discarded and new bolts must be installed. They are tighten-to-yield designed and cannot be reused.
- Remove and discard the bolts.
- Remove the cylinder head.
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NOTE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to remove all traces of the head gasket.
Make sure that the mating faces of the cylinder head are clean and free of foreign material.
- Remove and discard the cylinder head gasket.
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NOTE: Place clean, lint-free shop towels over exposed engine cavities. Carefully remove the towels so foreign material is not dropped into the engine. Any foreign material (including any material created while cleaning gasket surfaces) that enters the oil passages or the oil pan, may cause engine failure.NOTE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to remove all traces of the head gasket.
Make sure that the mating faces of the engine block are clean and free of foreign material.
- Support the cylinder head on a bench with the head gasket side up. Check the cylinder head distortion and the cylinder block distortion. Refer to: Cylinder Head Distortion . Refer to: Cylinder Block Distortion .