Cylinder Head
Cylinder HeadMaterial:
Removal
1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Maintenance/Service and Repair.
2. Remove the lower intake manifold.
3. Remove the A/C compressor. For additional information, refer to Heating and Air Conditioning.
4. Remove the generator. For additional information, refer to Alternator.
5. Remove the power steering pump.
6. Remove the bolts and the generator mounting bracket.
7. Remove the bolts and the rocker arms.
8. Remove the nut and detach the wiring harness bracket.
9. Remove the 2 stud bolts from the rear of the A/C compressor mounting bracket.
10. Remove the accessory drive belt tensioner.
11. Remove the bolts and remove the front of the A/C compressor mounting bracket.
12. Remove the exhaust manifolds.
13. NOTE: RH shown, LH similar.
Remove the 2 cylinder block coolant drain plugs.
14. Remove and discard the 8 cylinder head bolts.
15. Remove the cylinder heads.
16. Remove and discard the cylinder head gaskets.
Installation
1. CAUTION: 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.
CAUTION: Observe all warnings or cautions and follow all application directions contained on the packaging of the silicone gasket remover and the metal surface prep.
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.
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.
2. Check the cylinder head for flatness.
3. Clean the cylinder head bolt holes in the cylinder block. Make sure all coolant, oil or other foreign material if removed.
4. NOTE: The "V" notch in the head gasket faces the front of the engine.
Install new cylinder head gaskets.
5. Install the cylinder heads.
6. Install the bolts.
^ Tighten the bolts in 5 stages in the sequence shown.
^ Stage 1: Tighten to 50 Nm (37 ft. lbs).
^ Stage 2: Loosen one full turn.
^ Stage 3: Tighten to 30 Nm (22 ft. lbs).
^ Stage 4: Tighten 90 degrees.
^ Stage 5: Tighten an additional 90 degrees.
7. NOTE: RH shown, LH similar.
Install the 2 cylinder block coolant drain plugs.
^ Tighten to 24 Nm (18 ft. lbs).
8. Install the exhaust manifolds.
9. Install the A/C compressor mounting bracket and bolts.
^ Tighten to 47 Nm (35 ft. lbs).
10. Install the accessory drive belt tensioner.
^ Tighten to 27 Nm (20 ft. lbs).
11. Install the stud bolts to the A/C compressor mounting bracket.
^ Tighten to 47 Nm (35 ft. lbs).
12. Position the wiring harness bracket and install the nut.
^ Tighten to 10 Nm (89 inch lbs).
13. NOTE: Do not tighten the rocker arm bolts at this time.
Install the rocker arms and bolts.
14. Install the generator mounting bracket and bolts.
^ Tighten to 47 Nm (35 ft. lbs).
15. Install the power steering pump.
16. Install the generator. For additional information, refer to Alternator.
17. Install the A/C compressor. For additional information, refer to Heating and Air Conditioning.
18. Install the lower intake manifold.
19. Drain the engine oil.
20. Fill the engine with clean engine oil.
21. Fill and bleed the cooling system.
22. Fill the power steering system.
23. Charge the A/C system. For additional information, refer to Heating and Air Conditioning.