gmc Workshop Repair Guides

GMC Workshop Manuals

< PREV PAGE NEXT PAGE >
Page 1
background image

Camshaft Gear/Sprocket: Service and Repair

To check for worn camshaft lobes without disassembling the engine, refer to "Measuring Camshaft Lobe Lift."

Remove or Disconnect

1. Front end sheet metal as required, depending on body builder design.

^

Drain the cooling system.

2. Radiator, fan shroud, fan, and pulley.
3. Air cleaner.
4. Fuel pump.
5. Rocker arm cover, as outlined previously.
6. Distributor.
7. Pushrod covers, as outlined previously.
8. Hydraulic lifters, as outlined previously.
9. Torsional damper, as outlined previously.

10. Timing gear cover, as outlined previously.

^

Align the timing marks.

11. Thrust plate bolts (39).
12. Camshaft. Support the camshaft carefully to avoid damage to the camshaft bearings. On some vehicles, it may be necessary to disconnect the front

engine mounting and raise the engine to provide clearance.

Inspect

-

Camshaft lobes and journals for scratches, pitting, and wear.

-

Timing gear for damaged teeth.

Measure

Engine, Cooling and Exhaust > Engine > Camshaft, Lifters and Push Rods > Camshaft Gear/Sprocket > Component Information > Service and Repair

< PREV PAGE NEXT PAGE >