Timing Chain: Service and Repair

Camshaft Timing Chain and Sprocket Replacement

Removal Procedure






1. Disconnect both the battery negative cables from the batteries.
2. Rotate the engine to TDC.
3. Remove the upper fan shroud from the radiator. Refer to Engine Coolant Fan Shroud Replacement Fan Shroud Replacement (Upper).
4. Remove the drive belt from the water pump pulley. Refer to Drive Belt Replacement Service and Repair.
5. Remove the lower fan shroud from the radiator. Refer to Engine Coolant Fan Shroud Replacement Fan Shroud Replacement (Lower).
6. Remove the crankshaft balancer from the crankshaft. Refer to Crankshaft Balancer Replacement Service and Repair.
7. Remove the water pump from the engine block. Refer to Water Pump Replacement Service and Repair.
8. Remove the engine front cover from the engine block. Refer to Engine Front Cover Replacement Service and Repair.
9. Remove the bolt from the timing chain sprocket to the camshaft.






10. Remove the fuel injection pump drive gear from the camshaft.






11. Remove the timing chain and sprocket from the camshaft.
12. Replace the wood drift key if damaged. Refer to Timing Chain and Camshaft Sprocket Removal 19. Timing Chain and Sprockets Removal.






13. Remove the sprocket from the crankshaft.

Installation Procedure

Important: Make sure the timing marks are aligned.






1. Install the crankshaft sprocket on the crankshaft.






2. Install the camshaft sprocket with the timing chain to the engine block.






3. Install the fuel injection pump drive gear to the camshaft.






Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the bolts from the timing chain sprocket to the camshaft.

Tighten
Tighten the bolts to 170 Nm (125 lb ft).

5. Install the engine front cover to the engine block. Refer to Engine Front Cover Replacement Service and Repair.
6. Install the water pump to the engine front cover. Refer to Water Pump Replacement Service and Repair.
7. Install the crankshaft balancer to the crankshaft. Refer to Crankshaft Balancer Replacement Service and Repair.
8. Install the lower fan shroud to the radiator. Refer to Engine Coolant Fan Shroud Replacement Fan Shroud Replacement (Lower).
9. Install the drive belt on the drive pulleys. Refer to Drive Belt Replacement Service and Repair.
10. Install the upper fan shroud to the radiator. Refer to Engine Coolant Fan Shroud Replacement Fan Shroud Replacement (Upper).
11. Connect both the battery negative cables to the batteries.
12. Perform the TDC off set timing procedure. Refer to Fuel Injection Pump Top Dead Center Offset Adjustment Service and Repair.