Cylinder Head RH: 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 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 .
Disconnect the LH HO2S catalyst monitor sensor and the wiring harness retainers.

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Disconnect the RH HO2S and catalyst monitor sensor.

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NOTE: Clean the catalytic converter-to-muffler sealing surfaces.

Remove the exhaust flange bolts and detach the exhaust hanger.

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Remove and discard the LH catalytic converter flange nuts.

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NOTE: Clean the catalytic converter-to-exhaust manifold sealing surfaces.

Remove and discard the RH catalytic converter flange nuts and position rearward.

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Remove the RH camshafts. Refer to: Camshafts .
Remove the lower intake manifold. Refer to: Lower Intake Manifold .
Disconnect the RH CMP sensor electrical connectors.

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Remove the bolts and the RH CMP sensors.

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NOTE: Do not use power tools to remove the bolt or damage to the upper RH timing chain guide may occur.

Remove the bolt and the RH timing chain guide.

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Disconnect the CHT sensor electrical connector.

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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.

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Inspect and install new components as necessary.

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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 surface
  
  NOTE: 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.

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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.

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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 .