Timing Cover: Service and Repair

REMOVAL PROCEDURE






1. Disconnect the battery negative cables from the batteries.
2. Drain the cooling system.
3. Remove the upper fan shroud from the radiator.
4. Remove the drive belt from the pulleys.
5. Raise the vehicle.
6. Remove the lower fan shroud from the radiator.
7. Remove the A/C compressor from the mounting bracket and reposition to the side.
8. Remove the power steering pump from the mounting bracket.






9. Remove the left mounting bracket from the engine block.
10. Remove the generator from the mounting bracket.
11. Remove the vacuum pump from the mounting bracket.






12. Remove the right mounting bracket from the engine block.
13. Remove the water pump from the engine front cover.
14. Remove the crankshaft balancer from the crankshaft.
15. Remove the crankshaft position sensor from the engine front cover.






16. Remove the fuel injection drive gear from the camshaft.
17. Remove the fuel injection pump mounting bolts.






18. Remove the bolts from the engine front cover and the oil pan, please refer to Engine, Cooling and Exhaust/Engine/Engine Lubrication/Oil Pan, Engine/Service and Repair/ Service and Repair

IMPORTANT: Mark the fuel line clips, so that they can be re-installed on the proper stud.

19. Remove the fuel line clips from the studs.






20. Remove the engine front cover from the engine block.

INSTALLATION PROCEDURE

^ Tools Required
- J 22102 Seal Installer






1. Use the J 22102 to install a new crankshaft front cover oil seal.






2. Apply a 2 mm (3/32 inch) bead of anaerobic sealant GM P/N 1052357 to the engine front cover.
3. Apply a 5 mm (3/16 inch) bead of RTV sealant GM P/N 12345739 to the engine front cover sealing surface that mates with oil pan, please refer to Engine, Cooling and Exhaust/Engine/Engine Lubrication/Oil Pan, Engine/Service and Repair/ Service and Repair






4. Install the engine front cover to the engine block

NOTICE: Refer to Fastener Notice in Service Precautions.






5. Install the engine front cover mounting bolts
Tighten the engine front cover mounting bolts to 40 Nm (30 ft. lbs.).






6. Install the left mounting bracket to the engine front cover.
7. Install the power steering pump to the mounting bracket.






8. Install the A/C compressor to the mounting bracket and reposition to the side.






9. Install the right mounting bracket to the engine front cover.
10. Install the generator to the mounting bracket.
11. Install the vacuum pump to the mounting bracket.
12. Install the fuel injection pump mounting bolts.
13. Install the water pump to the engine block.

IMPORTANT: Check the marks on the fuel line clips made during removal. Ensure that the fuel line clips are re-installed on the proper studs.






14. Install the fuel pump drive gear to the camshaft and align the timing marks.
Tighten the bolts to 25 Nm (20 ft. lbs.).

15. Install the fuel return line clips.
16. Install the crankshaft position sensor to the engine front cover.
17. Install the crankshaft balancer to the crankshaft.
18. Install the lower fan shrouds to the radiator.
19. Lower the vehicle.
20. Install the drive belt on the pulleys.
21. Install the upper fan shroud to the radiator.
22. Connect the battery negative cables to the batteries.
23. Refill the cooling system.
24. Reset the fuel injection pump timing.
25. Perform the TDC offset timing procedure.