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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. Refer to Fuel Injector Sight Shield Replacement (LLT) (Fuel Injector Sight Shield Replacement).
2. On models equipped with LP1 and LY7 engines, remove the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement (LP1, LY7) (Lower Intake Manifold Replacement (LP1, LY7)).
3. On models equipped with LLT engines, remove the intake manifold. Refer to Intake Manifold Replacement (Intake Manifold Replacement).
4. On all models remove the camshaft covers. Refer to Camshaft Cover Replacement - Left Side (LLT) (Camshaft Cover Replacement - Left Side) and Camshaft Cover Replacement - Right Side (LLT) (Camshaft Cover Replacement - Right Side).
5. 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 (Static Fill) (Cooling System Draining and Filling (Static Fill)).
6. Disconnect the purge vent hose from the water outlet.
7. Remove the water outlet with the radiator hose and reposition aside. Refer to Water Outlet Replacement (Service and Repair).
8. Remove the accessory drive belts. Refer to Water Pump and Generator Belt Replacement (Water Pump and Generator Belt Replacement) and Air Conditioning Compressor and Power Steering Pump Belt Replacement (Air Conditioning Compressor and Power Steering Pump Belt Replacement).
9. Remove the A/C compressor and power steering belt tensioner. Refer to Air Conditioning Compressor and Power Steering Pump Belt Tensioner Replacement (Air Conditioning Compressor and Power Steering Pump Belt Tensioner Replacement).
10. Remove the generator bracket with the generator and the belt tensioner. Refer to Generator Bracket Replacement (LLT) (Generator Bracket Replacement).

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


11. Remove the power steering fluid reservoir and reposition the power steering fluid reservoir in order to provide access.
12. Remove the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement (Power Steering Pump Pulley Replacement).

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


13. Remove the power steering pump upper front bolt and loosen the remaining two bolts. Refer to Power Steering Pump Pulley Replacement (Power Steering Pump Pulley Replacement).
14. Remove the crankshaft balancer. Refer to Crankshaft Balancer Removal (10. Crankshaft Balancer Removal).
15. Remove the camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7) (Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7)) , Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (LP1, LY7) (Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (LP1, LY7)) , 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).
16. 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 (LP1, LY7) (Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake (LP1, LY7)) , and Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7) (Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7)).




17. Remove the engine front cover with the water pump. Refer to Engine Front Cover Removal (15. Engine Front Cover Removal).
18. Disassemble the engine front cover. Refer to Engine Front Cover Disassemble (77. Engine Front Cover Disassemble).

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


19. Carefully clean the engine front cover sealing surfaces. Refer to Engine Front Cover Cleaning and Inspection (78. Engine Front Cover Cleaning and Inspection).

Important: 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.


20. Carefully clean the engine front cover sealing surfaces. Refer to Engine Front Cover Cleaning and Inspection (78. Engine Front Cover Cleaning and Inspection).
21. 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 (79. Engine Front Cover Assemble).




2. Use the EN 46109 in order to install the engine front cover. Refer to Engine Front Cover Installation (126. 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 (LP1, LY7) (Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake (LP1, LY7)) , and Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7) (Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7)).
4. Install the camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7) (Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (LP1, LY7)) , Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (LP1, LY7) (Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (LP1, LY7)) , 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 (132. Crankshaft Balancer Installation).
6. Install the power steering pump. Refer to Power Steering Pump Pulley Replacement (Power Steering Pump Pulley Replacement).
7. Install the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement (Power Steering Pump Pulley Replacement).
8. Install the power steering fluid reservoir. Refer to Power Steering Fluid Reservoir Replacement (V6) (Service and Repair).
9. Install the generator bracket with the generator and the belt tensioner. Refer to Generator Bracket Replacement (LLT) (Generator Bracket Replacement).
10. Install the A/C compressor and power steering belt tensioner. Refer to Air Conditioning Compressor and Power Steering Pump Belt Tensioner Replacement (Air Conditioning Compressor and Power Steering Pump Belt Tensioner Replacement).
11. Install the accessory drive belts. Refer to Air Conditioning Compressor and Power Steering Pump Belt Replacement (Air Conditioning Compressor and Power Steering Pump Belt Replacement) and Water Pump and Generator Belt Replacement (Water Pump and Generator Belt Replacement).
12. Install the water outlet. Refer to Water Outlet Replacement (Service and Repair).
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 (Static Fill) (Cooling System Draining and Filling (Static Fill)).
15. Install the camshaft covers. Refer to Camshaft Cover Replacement - Left Side (LLT) (Camshaft Cover Replacement - Left Side) and Camshaft Cover Replacement - Right Side (LLT) (Camshaft Cover Replacement - Right Side).
16. On models equipped with LLT engines, install the intake manifold. Refer to Intake Manifold Replacement (Intake Manifold Replacement).
17. On models equipped with LP1 and LY7 engines, install the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement (LP1, LY7) (Lower Intake Manifold Replacement (LP1, LY7)).
18. On all models, install the engine cover. Refer to Fuel Injector Sight Shield Replacement (LLT) (Fuel Injector Sight Shield Replacement).
19. 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 (Static Fill) (Cooling System Draining and Filling (Static Fill)).

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