Cylinder Head Replacement - Right
Cylinder Head Replacement - Right^ Tools Required
- J 36660-A Electronic Torque Angle Meter
Removal Procedure
1. Disconnect the negative battery cable.
2. Drain the cooling system.
3. Remove the engine cooling fan assembly.
4. Remove the generator mounting bracket.
5. Remove the generator mounting bracket stud from the cylinder head.
6. Remove the lower intake manifold.
7. Remove the exhaust manifold.
8. Remove the oil level indicator and tube.
9. Remove the spark plug wire harness and spark plug wire support.
10. Remove the bolt and the ground strap from the rear of the cylinder head.
11. Remove the bolt and the ground wires from the rear of the cylinder head.
12. Secure the ground strap and the ground wires out of the way.
13. Remove the valve pushrods.
14. Remove the spark plugs.
15. Remove the cylinder head bolts.
Notice: After removal, place the cylinder head on two wood blocks to prevent damage.
16. Remove the cylinder head.
17. Remove and discard the cylinder head gasket.
18. Remove the dowel pins (cylinder head locator) (if required).
19. Clean the engine block and the cylinder head sealing surfaces.
Notice: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
20. Clean the cylinder head bolts and the engine block bolt holes.
21. For further service to the cylinder head refer to the following:
^ Refer to Cylinder Head Disassemble.
^ Refer to Cylinder Head Cleaning and Inspection.
^ Refer to Valve Guide Reaming/Valve and Seat Grinding.
^ Refer to Cylinder Head Assemble.
Installation Procedure
1. Clean the cylinder head gasket surfaces on the engine block.
2. Inspect the dowel pins (cylinder head locator) for proper installation.
3. Clean the cylinder head gasket surfaces on the cylinder head.
Important: Do not use any type sealer on the cylinder head gasket (unless specified).
4. Install the NEW cylinder head gasket in position over the dowel pins (cylinder head locator).
5. Install the cylinder head onto the engine block. Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket.
6. Apply sealant GM P/N 12346004 or equivalent to the threads of the cylinder head bolts.
Notice: Refer to Fastener Notice in Service Precautions.
7. Install the cylinder head bolts finger tight.
8. Tighten the cylinder head bolts in sequence on the first pass.
^ Tighten the bolts in sequence on the first pass to 30 Nm (22 ft. lbs.).
9. Use the J 36660-A in order to tighten the cylinder head bolts in sequence on the final pass.
^ Rotate the long bolts (1, 4, 5, 8, and 9) an additional 75°.
^ Rotate the medium bolts (12 and 13) an additional 65°.
^ Rotate the short bolts (2, 3, 6, 7, 10, and 11) an additional 55°.
10. Install the valve pushrods.
11. Install the lower intake manifold.
12. Install the spark plug wire harness and the spark plug wire support and bolts.
^ Tighten only the rear spark plug wire support bolt to 12 Nm (106 inch lbs.).
13. Remove the front spark plug wire support bolt. The front spark plug wire support bolt is used to fasten the oil level indicator tube, and will be installed within the oil level indicator tube installation procedure.
14. Install the spark plugs.
15. Install the oil level indicator tube and indicator.
16. Install the exhaust manifold.
17. Install the bolt and the ground wires to the rear of the cylinder head.
^ Tighten the ground wire bolt to 35 Nm (26 ft. lbs.).
18. Install the bolt and the ground strap to the rear of the cylinder head.
^ Tighten the ground strap bolt to 35 Nm (26 ft. lbs.).
19. Install the stud for the generator mounting bracket.
^ Tighten the generator mounting bracket stud to 20 Nm (15 ft. lbs.).
20. Install the generator mounting bracket.
21. Install the engine cooling fan assembly.
22. Fill the cooling system.
23. Connect the negative battery cable.