Camshaft, Engine: Removal: Camshaft
- Remove both cylinder heads. Refer to CYLINDER HEAD, REMOVAL .CAUTION:
The 6.4L Multi Displacement System (MDS) engine uses both standard roller lifters and deactivating roller lifters. The deactivating roller lifters must be used in cylinders 1, 4, 6, 7. The deactivating lifters can be identified by the two holes in the side of the lifter body, for the latching pins.
CAUTION:Whenever the camshaft is replaced, all lifters must be replaced. If the lifter and retainer assemblies are to be reused, identify the lifters to ensure installation in their original location or engine damage could result.
CAUTION:The lifter and retainer assembly must be installed as a unit.
- Remove the lifters (2) and retainer (1) as an assembly. Refer to LIFTER(S), HYDRAULIC, ROLLER, REMOVAL .
- Remove the radiator. Refer to RADIATOR, ENGINE COOLING, REMOVAL .
- Remove the A/C condenser. Refer to CONDENSER, A/C, REMOVAL .
- Remove the timing chain and camshaft phaser. Refer to CHAIN AND SPROCKETS, TIMING, REMOVAL .
- Remove the camshaft thrust plate (1).CAUTION:
Use care when removing the camshaft, do not damage the camshaft bearings with the camshaft lobes.
- Install a long bolt (2) into the front of the camshaft to aid in removal.
- Remove the camshaft using care not to damage the camshaft bearings with the camshaft lobes (1).NOTE:
For any camshaft lobe or roller lifter failure, the oil pan must be removed for inspection of metal contamination of the oil pick-up. If metal is found remove the oil control valve, inspect for metal contamination of the main oil galley. If the oil control valve has metal contamination remove all of the rod and main caps to inspect the bearings. Repair as necessary.