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Timing Cover: Service and Repair




Engine Front Cover Replacement

Special Tools

EN 46109 - Engine Front Cover Installation Guide Pins

Removal Procedure

1. Remove the engine cover. Intake Manifold Cover Replacement - Rear Intake Manifold Cover Replacement - Rear.

2. Remove the intake manifold. Refer to Intake Manifold Replacement Intake Manifold Replacement.

3. Remove the camshaft covers. Refer to Camshaft Cover Replacement - Left Side Camshaft Cover Replacement - Left Side and Camshaft Cover Replacement - Right Side Camshaft Cover Replacement - Right Side.

4. Drain the engine coolant. Refer to Cooling System Draining and Filling (GE 47716) Cooling System Draining and Filling (GE 47716)Cooling System Draining and Filling (LFX, Static Fill) Cooling System Draining and Filling (Static Fill)Cooling System Draining and Filling (LSA, LS3, L99 Static Fill) Cooling System Draining and Filling (Static Fill).

5. Disconnect the purge vent hose from the water outlet.

6. Remove the water outlet with the radiator hose and reposition aside. Refer to Radiator Outlet Hose Replacement (LS3, L99) Radiator Outlet Hose ReplacementRadiator Outlet Hose Replacement (LSA) Radiator Outlet Hose ReplacementRadiator Outlet Hose Replacement (LFX) Radiator Outlet Hose Replacement

7. Remove the accessory drive belts. Refer to Drive Belt Replacement Service and Repair

8. Remove the A/C compressor and power steering belt tensioner. Refer to Drive Belt Tensioner Replacement Service and Repair

9. Remove the generator bracket with the generator and the belt tensioner. Refer to Generator Bracket Replacement (LS3/L99) Generator Bracket ReplacementGenerator Bracket Replacement (LFX) Generator Bracket ReplacementGenerator Bracket Replacement (LSA) Generator Bracket Replacement.

Note: Do not disconnect the power steering pipes or drain the power steering fluid.

10. Remove the power steering fluid reservoir and reposition the power steering fluid reservoir in order to provide access. Refer to Power Steering Fluid Reservoir Bracket Replacement (LFX) Power Steering Fluid Reservoir Bracket Replacement

Note: Do not disconnect the power steering pipes/hoses.

11. Remove the power steering pump upper front bolt and loosen the remaining two bolts.

12. Remove the crankshaft balancer. Refer to Crankshaft Balancer Removal 7. Crankshaft Balancer Removal.

13. Remove the camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust , Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake , Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust and Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake.

14. Remove the camshaft position actuator solenoid valves from the front cover. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake , Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust , Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake , and Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust.




15. Remove the engine front cover with the water pump. Refer to Engine Front Cover Removal 12. Engine Front Cover Removal.

16. Disassemble the engine front cover. Refer to Engine Front Cover Disassemble 74. Engine Front Cover Disassemble.

Note: Do NOT use sharp and/or metal gasket scrapers in order to clean the sealing surfaces.

17. Carefully clean the engine front cover sealing surfaces. Refer to Engine Front Cover Cleaning and Inspection 75. Engine Front Cover Cleaning and Inspection.

Note: Insert a piece of cardboard between the oil pan front and the oil pump in order to prevent any contaminants from falling into the oil pan.

18. Carefully clean the engine front cover sealing surfaces. Refer to Engine Front Cover Cleaning and Inspection 75. Engine Front Cover Cleaning and Inspection.

19. Use compressed air in order to remove any engine coolant from the engine cooling passages and from the top of the oil pan scraper (windage tray).

Installation Procedure

1. Assemble the engine front cover. Refer to Engine Front Cover Assemble 76. Engine Front Cover Assemble.




2. Use the EN 46109 - engine front cover installation guide pins in order to install the engine front cover. Refer to Engine Front Cover Installation 121. Engine Front Cover Installation.

3. Install the camshaft position actuator solenoid valves to the front cover. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake , Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust , Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake , and Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust.

4. Install the camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust , Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake , Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust and Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake.

5. Install the crankshaft balancer. Refer to Crankshaft Balancer Installation 127. Crankshaft Balancer Installation.

6. Install the power steering pump.

7. Install the power steering pump pulley.

8. Install the power steering fluid reservoir. Refer to Power Steering Fluid Reservoir Replacement (LFX) Power Steering Fluid Reservoir ReplacementPower Steering Fluid Reservoir Replacement (L99, LS3) Power Steering Fluid Reservoir Replacement.

9. Install the generator bracket with the generator and the belt tensioner. Refer to Generator Bracket Replacement (LS3/L99) Generator Bracket ReplacementGenerator Bracket Replacement (LFX) Generator Bracket ReplacementGenerator Bracket Replacement (LSA) Generator Bracket Replacement.

10. Install the A/C compressor and power steering belt tensioner.

11. Install the accessory drive belts.

12. Install the water outlet.

13. Install the purge vent hose to the water outlet.

14. Fill the cooling system. Refer to Cooling System Draining and Filling (GE 47716) Cooling System Draining and Filling (GE 47716)Cooling System Draining and Filling (LFX, Static Fill) Cooling System Draining and Filling (Static Fill)Cooling System Draining and Filling (LSA, LS3, L99 Static Fill) Cooling System Draining and Filling (Static Fill).

15. Install the camshaft covers. Refer to Camshaft Cover Replacement - Left Side Camshaft Cover Replacement - Left Side and Camshaft Cover Replacement - Right Side Camshaft Cover Replacement - Right Side.

16. Install the intake manifold. Refer to Intake Manifold Replacement Intake Manifold Replacement.

17. Install the engine cover. Refer to Intake Manifold Cover Replacement - Rear Intake Manifold Cover Replacement - Rear.

18. Fill the cooling system. Refer to Cooling System Draining and Filling (GE 47716) Cooling System Draining and Filling (GE 47716)Cooling System Draining and Filling (LFX, Static Fill) Cooling System Draining and Filling (Static Fill)Cooling System Draining and Filling (LSA, LS3, L99 Static Fill) Cooling System Draining and Filling (Static Fill).

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