Camshaft: Service and Repair

Timing Chain And Sprocket Alignment:

1. Remove valve lifters and engine front cover as previously described.
2. Remove fuel pump and pushrod.
3. Remove radiator.
4. On models with A/C, discharge A/C system and remove A/C condenser.
5. On all models, remove timing chain and sprocket, refer to TIMING CHAIN.
6. Withdraw camshaft from engine, using care not to damage camshaft bearings.
7. Reverse procedure to install. When installing timing chain, align valve timing marks as shown in Fig. 41. Whenever a new camshaft is installed, coat lobes with GM Engine Oil Supplement or equivalent. It is also recommended that valve lifters be replaced to ensure durability of camshaft lobes and lifter feet.