Camshaft: Service and Repair

Camshaft





Special Tool(s)

Removal
1. Remove the roller followers.
2. Remove the LH timing chain for the LH side and both timing chains for the RH side. Service and Repair





3. Install the special tool.





4. Remove the exhaust camshaft sprocket and the intake camshaft bolt, washer and spacer.





5. Remove the special tool.





6. Compress the tensioner and install a lock pin.





7. Remove the timing chain, the sprocket, and intake camshaft sprocket spacer.





8. NOTE: LH shown; RH similar.

Remove the bolts.





9. CAUTION: The outer bolts on the outer cam bearing cap (exhaust) are longer and must be returned to the same location or engine damage may occur.

NOTE: Identify the camshaft to cylinder head location. Caps are not interchangeable.

Remove the bolts and the camshaft bearing cap assemblies.





10. Remove the camshafts.

Installation





1. NOTE: LH shown; RH similar.

Install the camshafts.
^ Lubricate the camshafts with clean engine oil.





2. Install the camshaft bearing cap assemblies and tighten the bolts in the sequence shown.





3. Install the bolts.





4. CAUTION: Timing marks must be at 12 o'clock and indexed at 6 o'clock.

Install the camshaft sprockets and the chain as an assembly.





5. Remove the lockpin from the chain tensioner.





6. Install the special tool.





7. Install the camshaft spacer, washer and bolt and hand-tighten the bolt.





8. Install the camshaft sprocket, washer and bolt, and hand-tighten the bolt.





9. Tighten the bolts in two stages:
^ Stage 1: Tighten to 40 Nm (30 ft. lbs.).
^ Tighten an additional 90 degrees.
10. Remove the special tool.
11. Install the left timing chain for the left side or both timing chains for the right side. Service and Repair
12. Install the roller followers.