Cylinder Head: Removal
WARNING: This page is about a different variant/trim than selected.
NOTE:
Do not loosen or remove the crankshaft pulley bolt without first installing the special tools as instructed in this procedure. The crankshaft pulley and the crankshaft timing sprocket are not keyed to the crankshaft. The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction. For that reason, the crankshaft sprocket is also unfastened if the pulley bolt is loosened. Before any repair requiring loosening or removal of the crankshaft pulley bolt, the crankshaft and camshafts must be locked in place by the special service tools, otherwise severe engine damage can occur.
NOTE:
During engine repair procedures, cleanliness is extremely important. All parts must be thoroughly cleaned and 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.
- With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting .
- Release the fuel system pressure. Refer to: Fuel System Pressure Release .
- Drain the cooling system. Refer to: Engine Cooling System Draining, Vacuum Filling and Bleeding .
- Remove the following items:
- Remove the intake manifold. Refer to: Intake Manifold .
- Remove EGR valve. Refer to: Exhaust Gas Recirculation (EGR) Valve .
- Remove EGR cooler. Refer to: Exhaust Gas Recirculation (EGR) Cooler .
- Remove EGR inlet tube. Refer to: Exhaust Gas Recirculation (EGR) Inlet Tube .
- Remove the valve tappets. Refer to: Valve Tappets .
- Disconnect the HO2S wiring harness connector and detach the wiring harness retainers.
- Remove the bolt and position the coolant tube aside.
- Inspect the coolant tube O-ring seal and replace if damaged.
- Remove the bolt and position the coolant tube aside.
- Inspect the coolant tube O-ring seal and replace if damaged.
- Disconnect the ECT sensor wiring harness electrical connector and the retainer.
- Remove the bolt and ground wire.
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- Detach the wiring harness retainers from the fuel rail.
- Remove the fuel rail insulator.
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- Detach the fuel rail wiring harness retainer from the fuel rail.
- Disconnect the fuel rail pressure sensor and fuel rail electrical connectors.
- Position the fuel rail wiring harness aside.
- Release the clamp and position the coolant hose aside. Use the General Equipment: Hose Clamp Remover/Installer
- Remove the nuts, bolt and the turbocharger heat shield.
- Remove the turbocharger nuts and the studs.
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- Remove the cylinder head bolts.
- Discard the bolts.
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NOTE: When removing or installing the cylinder head, use care to prevent excessive movement of the turbocharger. Excessive movement may cause damage to the turbocharger oil return tube resulting in an engine oil leak.
With the aid of an assistant, lift the cylinder head to clear the locating dowels in the cylinder block and remove the cylinder head.
- Remove and discard the turbocharger gasket.
- Remove and discard the cylinder head gasket.
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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.
Clean the cylinder head sealing surfaces.
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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.NOTE: Clean the cylinder head bolt holes in the cylinder block. Make sure all coolant, oil or other foreign material is removed.
Clean the cylinder block sealing surfaces.
- Inspect the cylinder head sealing surfaces.
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- Check the cylinder head distortion. Refer to: Cylinder Head Distortion .
- Check the cylinder block distortion. Refer to: Cylinder Block Distortion .