Timing Chain: Service and Repair

TIMING CHAIN AND SPROCKETS REPLACEMENT


Removal Procedure
1. Disconnect both the battery negative cables from the batteries.
2. Rotate the engine to TDC.
3. Remove the engine front cover from the engine block.





4. Remove the bolt from the timing chain sprocket to the camshaft.





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





6. Remove the timing chain and sprocket from the camshaft.





7. Remove the sprocket from the crankshaft.
8. Replace the wood drift key if damaged.

Installation Procedure





1. Install the crankshaft sprocket on the crankshaft.

Important: Make sure the timing marks are aligned.





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: Refer to Fastener Notice in Service Precautions.





4. Install the bolts from the timing chain sprocket to the camshaft.
Tighten the bolts to 170 Nm (125 ft. lbs.).
5. Install the engine front cover to the engine block.
6. Connect both the battery negative cables to the batteries.
7. Perform the TDC off set timing procedure.