Rocker Arm and Shaft Disassembly, Reassembly, and Inspection

Rocker Arm and Shaft Disassembly, Reassembly, and Inspection

Disassembly

1. Rocker Arm Assembly - Disassembly

NOTE:
* Identify parts as they are removed so they can be reinstalled in their original locations.
* Inspect the rocker arm shaft and rocker arms.
* If reused, the rocker arms must be installed in their original location.
* When removing, or installing the rocker arm assembly, do not remove the camshaft holder bolts. The bolts will keep the holders and the rocker arms on the shaft.
* Bundle the intake rocker arms with rubber bands to keep them together as a set, and remove the bands after the intake rocker arms have been installed.
* When replacing the intake rocker arm assembly, remove the fastening hardware from the new intake rocker arm assembly.





Inspection

1. Rocker Arm and Shaft - Inspection





1. Measure the diameter of the shaft at the first rocker location.





2. Zero the gauge (A) to the shaft diameter.

3. Measure the inside diameter of the rocker arm, and check it for an out-of-round condition.











4. Repeat for all rocker arms and both shafts. If the clearance is beyond the service limit, replace the rocker shaft and all out of service limit rocker arms. If any VTEC rocker arm needs replacement, replace the rocker arms (primary, mid, and secondary), as a set.





5. Inspect the rocker arm pistons (A). Push on each piston manually. If it does not move smoothly, replace the rocker arm set.

NOTE: Apply new engine oil to the rocker arm pistons when reassembling.

Reassembly

1. Rocker Arm Assembly - Reassembly

NOTE:
* Identify parts as they are removed so they can be reinstalled in their original locations.
* If reused, the rocker arms must be installed in their original location.
* When removing, or installing the rocker arm assembly, do not remove the camshaft holder bolts. The bolts will keep the holders and the rocker arms on the shaft.
* Bundle the intake rocker arms with rubber bands to keep them together as a set, and remove the bands after the intake rocker arms have been installed.
* Prior to reassembling, clean all the parts in solvent, dry them, and apply new engine oil to all contact points.
* When replacing the intake rocker arm assembly, remove the fastening hardware from the new intake rocker arm assembly.