Timing Chain

TIMING CHAIN





1. Remove timing chain cover Engine Timing Cover(s) - Removal.

NOTE: The crankshaft timing mark (3) or (5) can be in one of two locations depending on whether the engine is early production (5), late production (3) or assembled with service parts (3). In all cases the keyway (2) will always be in the 9:00 position, in line with the ladder frame mounting surface (1) when the engine is at TDC.

2. Verify that the engine is still set to TDC.

NOTE: If the timing chain plated links can no longer be seen, the timing chain links corresponding to the timing marks must be marked prior to removal if the chain is to be reused.

3. Mark chain link (4) corresponding to crankshaft timing mark (3) or (5).





4. With the engine still set to TDC, verify that the marks on the camshaft sprockets (3) are in line with the cylinder head cover sealing surface (2). If the marks do not line up, the timing chain is not correctly installed.
5. Mark chain link (1) corresponding to camshaft timing mark.





6. Remove timing chain tensioner (5) . Engine Timing Tensioner - Removal
7. Remove timing chain (2).