Camshafts / Camshaft Followers / Lash Adjusters

1. Rotate the crankshaft anti-clockwise at least 60°, then rotate clockwise to TDC No. 1 (crankshaft key 30° before vertical).
2. At TDC No.1, the timing marks on the REAR of the camshaft sprockets should be precisely aligned as shown.

In a correctly timed engine, when No. 1 cylinder is at TDC compression the timing marks on the rear of the camshaft sprockets will always align.

Timing marks on the timing chains, camshaft and crankshaft sprockets will only aligned once every 122 crankshaft revolutions on a correctly timed engine.

Be aware - engine oil will bleed from timing chain tensioner.

Camshafts / Camshaft Followers / Lash Adjusters

Removal

1. Remove the engine from vehicle (Refer to 'Engine', page 3-1-4)
2. Remove the inlet manifold (Refer to 'Inlet Manifold', page 3-2-7).
3. Drain the engine coolant (Refer to 'Coolant Drain / Fill', page 3-4-3).
4. Remove the accessory drive belt (Refer to 'Drive Belt', page 3-6-1).
5. Remove the thermostat housing (Refer to 'Thermostat', page 3-4-5).
6. Remove the camshaft cover (Refer to 'Camshaft Cover', page 3-11-1).
7. Remove the timing cover (Refer to 'Timing Cover', page 3-11-3).
8. Remove the timing chains (Refer to 'Valve Timing Chains', page 3-10-1)
9. Progressively release all bolts that secure each bearing cap.

The thrust camshaft bearing cap, of each camshaft (No.1 and No. 8 cap), must be removed first and installed last.

10. Withdraw the bearing caps. Ensure they are retained in the sequence withdrawn.
11. Withdraw the camshafts.
12. Remove the camshaft followers and lash adjusters. Ensure they are retained in the sequence removed.