Camshaft: Service and Repair

Removing/Installing Camshaft:

REMOVE OR DISCONNECT
1. Upper fan shroud.
2. Radiator.
3. Valve lifters. Refer to Lifter, Valve. Service and Repair
4. Timing cover. Refer to Timing Cover / Service and Repair. Service and Repair
5. Timing chain and sprocket.

IMPORTANT All camshaft bearing journals are the same diameter and care must be exercised in removing the camshaft to avoid bearing damage.

6. Camshaft.

INSTALL OR CONNECT
^ Coat the camshaft lobes and journals with a high quality engine oil supplement (GM Engine Oil Supplement or equivalent).
^ When a new camshaft is installed, install new oil and filter. It is also recommended that all valve lifters be replaced to insure durability of the camshaft lobes and lifter feet.

1. Camshaft.

CAUTION All camshaft bearing journals are the same diameter and care must be exercised in installing the camshaft to avoid bearing damage.

2. Timing chain and sprocket. Refer to Timing Chain / Service and Repair. Service and Repair
Tighten
^ Sprocket Bolts to 23 Nm (17 ft. lb.)
3. Timing cover. Refer to Timing Cover / Service and Repair. Service and Repair
Tighten
^ Bolts to 24 Nm (18 ft. lb.)
^ Studs to 29 Nm (22 ft. lb.)
4. Valve lifters. Refer to Lifter, Valve / Service and Repair. Service and Repair
5. Radiator
6. Upper Fan Shroud