Rocker Arm Assembly: Service and Repair

- Tools Required
- J43223 Rocker Arm Removal
- SA9124E 4 Pivot Bar
- 310191 Screw

Removal





1. Remove the spark plug wires, accessory drive belt, fresh air hose, and cam cover assembly. Disconnect fuel injector electrical connectors if removing intake rocker arm assemblies or intake Lash adjusters.
2. Install rocker arm removal tool J43223 to the cylinder head rail. The tool consists of the following components:
J43223-1 Compressor
J43223-2 Bracket
J43223-3 Sliding Bracket
SA9124E-4 Pivot Bar
310191 Screw

IMPORTANT: Position the crankshaft and camshafts as described in the following steps to prevent valves from contacting pistons. If valves contact pistons, the valve stem keys may become dislodged from the valve stem retaining groove. This could result in significant engine damage.





3. Position the crankshaft at TDC with the pip marks on the camshaft sprockets at the 12 o'clock position. Next, rotate the crankshaft 90° past TDC. With the crankshaft at this position, the following rocker arm assemblies and lash adjusters can be removed.
#1 Intake #1 Exhaust
#2 Intake #3 Exhaust





4. To remove the remaining rocker arm assemblies or lash adjusters, rotate the crankshaft an additional 360°. The following rocker arm assemblies and lash adjusters can be removed.
#2 Exhaust #3 Intake
#4 Intake #4 Exhaust
5. Position compressor over valve spring and compress valve spring by rotating screw.
6. With magnet or fingers, remove rocker arm assemblies and/or hydraulic lash adjusters.


Installation
1. With rocker arm removal tools assembled to cylinder head rail and valve spring compressed, install hydraulic lash adjuster and rocker arm assembly.
2. Remove rocker arm tool J43223.
3. Install cam cover assembly, PVC fresh air house, accessory drive belt, and spark plug wires.