Cylinder Head - Removal
Cylinder Head - 4.6L (2V)
Removal
All cylinder heads
1. Remove the engine. For additional information, refer to Engine Engine - Removal.
2. NOTICE: Use care when lowering the engine, to prevent damage to the oil pan.
Lower the engine onto wooden blocks.
3. Remove the Engine Lifting Bracket.
4. Install the Engine Lifting Bracket Set.
5. Install the Engine Lifting Bracket Set.
6. Mount the engine on a suitable work stand.
7. If equipped with cylinder block drain plugs, remove the 3 bolts and the RH engine support insulator.
8. NOTE: LH shown, RH similar.
If equipped, remove the cylinder block drain plugs and drain the coolant in a suitable container.
9. Disconnect the LH radio frequency interference capacitor and Cylinder Head Temperature (CHT) sensor electrical connectors.
10. Disconnect the Camshaft Position (CMP) sensor electrical connector.
11. Disconnect the RH radio frequency interference capacitor electrical connector.
12. Disconnect the Knock Sensor (KS) electrical connector.
13. Disconnect the Engine Oil Pressure (EOP) switch electrical connector and wiring harness retainer.
14. Disconnect all of the harness routing clips and connector retainers. Remove the engine control sensor wiring harness.
15. NOTE: RH shown, LH similar.
Remove the 2 nuts and the 2 radio interference capacitors.
16. Remove the oil level indicator tube support bracket nut.
17. Remove the bolt and the oil level indicator and tube.
- Discard the O-ring seal.
18. NOTICE: 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 which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE: The fasteners are part of the valve cover and should not be removed.
NOTE: LH shown, RH similar.
Remove the valve covers.
- Fully loosen the fasteners and remove the valve covers.
- Clean the valve cover mating surface of the cylinder heads with silicone gasket remover and metal surface prep. Follow the directions on the packaging.
19. Remove the bolt and the CMP sensor.
20. Remove the bolt and the accessory drive belt idler pulley.
21. Remove the 4 bolts and the coolant pump pulley.
22. Remove the bolt and the crankshaft position (CKP) sensor.
23. Remove the crankshaft pulley bolt and washer.
- Discard the crankshaft pulley bolt.
24. Using the Crankshaft Vibration Damper Remover, remove the crankshaft pulley.
25. Using the Crankshaft Front Oil Seal Remover, remove and discard the crankshaft front seal.
26. Remove the 4 front oil pan bolts.
27. NOTE: Correct fastener location is essential for assembly procedure. Record fastener location.
Remove the 15 fasteners.
28. Remove the engine front cover from the cylinder block.
29. Remove the crankshaft sensor ring from the crankshaft.
30. Remove the 8 spark plugs.
31. NOTE: Camshaft roller follower is removed for clarity.
Install the Valve Spring Compressor Spacer between the valve spring coils to prevent valve stem seal damage.
32. NOTICE: The camshaft roller followers must be reinstalled in their original locations. Record the camshaft roller follower locations. Failure to follow these instruction may result in engine damage.
NOTE: Position the cam lobe away from the camshaft roller follower prior to removing each camshaft roller follower.
Use the Valve Spring Compressor to compress the valve springs and remove the all of the camshaft roller followers.
33. Position the crankshaft with the keyway at the 12 o'clock position.
34. NOTICE: If one or both of the tensioner mounting bolts are loosened or removed, the tensioner-sealing bead must be inspected for seal integrity. If cracks, tears, separation from the tensioner body or permanent compression of the seal bead is observed, install a new tensioner or engine damage may occur.
Remove the timing chain tensioning system from both timing chains.
1. Remove the 4 bolts.
2. Remove the 2 timing chain tensioners.
3. Remove the timing chain tensioner arms.
35. Remove the timing chains and crankshaft sprocket.
36. Remove the timing chain guides.
1. Remove the 2 bolts.
2. Remove the LH timing chain guide.
3. Remove the 2 bolts.
4. Remove the RH timing chain guide.
RH cylinder head
37. Remove the RH exhaust manifold.
1. Remove and discard the 8 nuts.
2. Remove the RH exhaust manifold.
3. Remove and discard the 2 RH exhaust manifold gaskets.
38. Remove and discard the 8 exhaust manifold-to-cylinder head studs.
39. Clean and inspect the exhaust manifold.
LH cylinder head
40. Remove the LH exhaust manifold.
1. Remove the 8 nuts.
2. Remove the LH exhaust manifold.
3. Remove and discard the 2 LH exhaust manifold gaskets.
41. Remove and discard the 8 exhaust manifold-to-cylinder head studs.
42. Clean and inspect the exhaust manifold.
All cylinder heads
43. Install the Cylinder Head Remover/Installers on both ends of the cylinder head being serviced.
44. NOTICE: The hydraulic lash adjusters must be reinstalled in their original locations. Record the hydraulic lash adjuster locations. Failure to follow these instructions may result in engine damage.
Remove the hydraulic lash adjusters.
45. NOTICE: The cylinder head must be cool before removing it from the engine. Cylinder head warpage can result if a warm or hot cylinder head is removed.
NOTICE: Place clean shop towels over exposed engine cavities. Carefully remove the towels so foreign material is not dropped into the engine. Failure to follow these instructions may result in engine damage.
NOTICE: The cylinder head bolts must be discarded and new bolts must be installed. They are a tighten-to-yield design and cannot be reused. Failure to follow these instructions may result in engine damage.
NOTICE: 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.
NOTICE: Aluminum surfaces are soft and can be scratched easily. Never place the cylinder head gasket surface, unprotected, on a bench surface. Failure to follow these instructions may result in engine damage.
NOTE: LH shown, RH similar.
Remove the bolts and the cylinder head.
- Discard the cylinder head gasket.
- Discard the cylinder head bolts.
46. NOTICE: 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.
NOTICE: Observe all warnings or cautions and follow all application directions contained on the packaging of the silicone gasket remover and the metal surface prep. Failure to follow these instructions may result in engine damage.
NOTE: If there is no residual gasket material present, metal surface prep can be used to clean and prepare the surfaces.
Clean the cylinder head-to-cylinder block mating surfaces of both the cylinder head and the cylinder block in the following sequence.
1. Remove any large deposits of silicone or gasket material with a plastic scraper.
2. Apply silicone gasket remover, following package directions, and allow to set for several minutes.
3. Remove the silicone gasket remover with a plastic scraper. A second application of silicone gasket remover may be required if residual traces of silicone or gasket material remain.
4. Apply metal surface prep, following package directions, to remove any remaining traces of oil or coolant and to prepare the surfaces to bond with the new gasket. Do not attempt to make the metal shiny. Some staining of the metal surfaces is normal.
47. NOTE: LH shown, RH similar.
Support the cylinder heads on a bench with the head gasket side up. Check the cylinder head distortion and the cylinder block distortion, paying particular attention to the oil pressure feed area.
