Cylinder Head Replacement - Left

Cylinder Head Replacement - Left Side

Special Tools

J 45059 Angle Meter


Removal Procedure





1. Drain the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) (Service and Repair)Cooling System Draining and Filling (Static Fill) (Service and Repair) .
2. Remove the drive belt. Refer to Drive Belt Replacement (Service and Repair) .
3. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement (Service and Repair) .
4. Remove the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side (4.3L) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (4.8L, 5.3L, 6.0L, and 6.2L) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (6.6L) (Exhaust Manifold Replacement - Left Side) .
5. Remove the left side pushrods. Refer to Valve Rocker Arm and Push Rod Replacement (Service and Repair) .
6. Remove the junction block bracket bolt.
7. Position the bracket and wiring harness aside.




8. Loosen the power steering (P/S) pump rear bracket nut.
9. Remove the P/S pump rear bracket front nut.
10. Remove the bolts and nut for the P/S pump bracket.
11. Leave the air conditioning (A/C) compressor, if equipped, and the P/S pump on the bracket.
12. Slide the P/S pump bracket off of the stud and set aside.




13. Remove the P/S pump bracket stud.




14. Remove the harness ground bolt.
15. Position the harness ground (4) and ground strap (5).




16. Remove the engine coolant temperature (ECT) sensor.




17. Remove the spark plugs.




18. Remove the spark plug wire support bolts and support.




19. Remove and discard the cylinder head bolts.




20. Remove the cylinder head.




21. Remove and discard the cylinder head gasket.




22. Remove the cylinder head locator pins, if necessary.
23. Clean and inspect the cylinder head, if necessary. Refer to Cylinder Head Cleaning and Inspection (Overhaul) .
24. Disassemble the cylinder head, if necessary. Refer to Cylinder Head Disassemble (Overhaul) .



Installation Procedure





1. Assemble the cylinder head, if necessary. Refer to Cylinder Head Assemble (Overhaul) .
2. Install the cylinder head locator pins, if necessary.





Important: Do not use any type of sealer on the cylinder head gasket.


3. Install a NEW cylinder head gasket.




4. Install the cylinder head.




5. Apply sealant to the threads of the NEW cylinder head bolts. Refer to Sealers, Adhesives, and Lubricants (Specifications) for the correct part number.
6. Install the cylinder head bolts finger tight.





Notice: Refer to Fastener Notice .

7. Tighten the cylinder head bolts using the sequence shown.

1. Tighten the bolts a first pass to 30 N.m (22 lb ft).
2. Tighten the long bolts (1, 4, 5, 8, 9) a final pass to 75 degrees using J 45059 .
3. Tighten the medium bolts (12, 13) a final pass to 65 degrees using J 45059 .
4. Tighten the short bolts (2, 3, 6, 7, 10, 11) a final pass to 55 degrees using J 45059 .






8. Install the spark plug wire support and bolts.

Tighten the bolts to 12 N.m (106 lb in).





9. Install the spark plugs.
10. If installing NEW spark plugs measure for the correct gap. Adjust the spark plug gap if necessary.

Spark plug gap to 1.52 mm (0.060 in).


* Tighten the plugs in a USED cylinder head to 15 N.m (11 lb ft).
* Tighten the plugs on the initial installation of a NEW cylinder head to 30 N.m (22 lb ft).






11. Install the ECT sensor. If reusing the old sensor, apply sealant to the threads. Refer to Sealers, Adhesives, and Lubricants (Specifications) for the correct part number.

Tighten the sensor to 20 N.m (15 lb ft).





12. Position the ground strap (5) and harness ground (4).
13. Install the harness ground bolt.

Tighten the bolt to 16 N.m (12 lb ft).





14. Install the P/S pump bracket stud.

Tighten the stud to 20 N.m (15 lb ft).





15. Slide the P/S pump bracket rearward.
16. Install the bolts and nuts for the P/S pump bracket.
17. Install the P/S pump rear bracket front nut.
18. Tighten the P/S pump rear bracket nut.

Tighten the bolts and nuts to 41 N.m (30 lb ft).





19. Position the bracket and wiring harness.
20. Install the junction block bracket bolt.

Tighten the bolt to 25 N.m (18 lb ft).

21. Install the left side pushrods. Refer to Valve Rocker Arm and Push Rod Replacement (Service and Repair) .
22. Install the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side (4.3L) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (4.8L, 5.3L, 6.0L, and 6.2L) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (6.6L) (Exhaust Manifold Replacement - Left Side) .
23. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement (Service and Repair) .
24. Install the drive belt. Refer to Drive Belt Replacement (Service and Repair) .
25. Fill the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) (Service and Repair)Cooling System Draining and Filling (Static Fill) (Service and Repair) .