Rocker Arm Assembly: Service and Repair

ARMS-ROCKER

REMOVAL





NOTE: This procedure is for in-vehicle service with camshafts installed.

1. Remove cylinder head cover
2. Remove spark plugs.
3. Rotate engine until the camshaft lobe, on the follower being removed, is positioned on its base circle (heel). Also, the piston should be a minimum of 6.3 mm (0.25 inch) below TDC position.

CAUTION: If cam follower assemblies are to be reused, always mark position for reassembly in their original positions.

4. Using Valve Spring Compressor 8215A (1) and Adapter 8436 (2) slowly depress valve assembly until rocker arm can be removed.
5. Repeat removal procedure for each rocker arm.

INSPECTION





Inspect the rocker arm lash adjuster pocket (1) and roller (3) for wear or damage. Make sure the oil squirt hole (2) is not plugged. Replace as necessary.

INSTALLATION





1. Lubricate rocker arm with clean engine oil.
2. Using Valve Spring Compressor 8215A (1) and Adapter 8436 (2) slowly depress valve assembly until rocker arm can be installed on the hydraulic lifter and valve stem.
3. Repeat installation procedure for each rocker arm.
4. Install spark plugs.
5. Install cylinder head cover.