Timing Cover: Service and Repair

Engine Front Cover

Material:

Removal

1. WARNING: If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to Fire Suppression System.

With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Maintenance/Service and Repair.
2. Release the fuel system pressure. For additional information, refer to Fuel Delivery and Air Induction.
3. Disconnect the battery ground cable. For additional information, refer to Battery.
4. Remove both valve covers.
5. Remove the coolant pump. For additional information, refer to Cooling System.
6. Remove the crankshaft front seal.
7. Remove the 4 bolts and position the power steering pump aside.
8. Remove the oil pan drain plug and drain the engine oil.
9. Remove the 4 front oil pan-to-engine front cover bolts.

10. NOTE: Limousines are equipped with 2 bolts retaining the shield.

Remove the bolt(s) and the shield.
11. Remove the bolt and the belt idler pulley.





12. Remove the bolts and the stud bolts in the sequence shown.





13. Remove the engine front cover from the front cover-to-cylinder block dowel.

14. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surface. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to remove all traces of the gasket material.

Clean the gasket surfaces with a plastic scraping tool and metal surface cleaner.

Installation

1. NOTE: If the engine front cover is not secured within 4 minutes, the sealant must be removed and the sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of wetness, or for 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.





Apply sealant along the cylinder head-to-block surface and the oil pan-to-cylinder block surface.





2. Install the engine front cover on the front cover-to-cylinder block dowel and loosely install the bolts.











3. Tighten the front cover fasteners in the sequence shown to 25 Nm (18 ft. lbs.).
4. Install the idler pulley and the bolt.
^ Tighten to 25 Nm (18 ft. lbs.).

5. NOTE: Limousines are equipped with 2 bolts retaining the shield.

Install the shield and the bolts(s).
^ Tighten to 25 Nm (18 ft. lbs.).
6. Loosely install the 4 front oil pan bolts.

7. NOTE: Make sure to tighten the bolts in 2 stages.

Tighten the 4 front oil pan bolts in 2 stages.
^ Stage 1: Tighten to 20 Nm (15 ft. lbs.).
^ Stage 2: Tighten an additional 60 degrees.
8. Install the oil pan drain plug.
^ Tighten to 13 Nm (10 ft. lbs.).

9. NOTE: The front lower hole in the power steering pump is not used.

Position the power steering pump and install the 4 bolts.
^ Tighten to 25 Nm (18 ft. lbs.).
10. Install a new crankshaft front oil seal.
11. Install the coolant pump. For additional information, refer to Cooling System.
12. Install the valve covers.
13. Connect the battery ground cable. For additional information, refer to Battery.
14. Fill the engine with clean engine oil.

15. WARNING: If equipped with fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System.

If equipped with fire suppression system, repower the system.