In-Vehicle Repair: Camshafts: Removal
WARNING: This page is about a different variant/trim than selected.
CAUTION:
During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure.
CAUTION:
The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if you loosen the pulley. Therefore, the engine must be retimed each time the damper is removed. Otherwise severe engine damage can occur.
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING AND LIFTING .
- Check the valve clearance prior to removal of the camshafts. For additional information, refer to VALVE CLEARANCE CHECK .
- Remove the timing chain and sprockets. For additional information, refer to TIMING DRIVE COMPONENTS .
- Mark the position of the camshaft lobes on the No. 1 cylinder for assembly reference.
- Remove the camshafts from the engine.
- Loosen the camshaft bearing cap bolts in the sequence shown in Fig 2, one turn at a time. Repeat until all the tension is released.
- Remove the camshaft bearing caps.
- Remove the camshafts.
CAUTION:
Failure to follow the camshaft loosening procedure can result in damage to the camshafts.