Rocker Arms and Shaft Inspection
Inspection1. Remove the rocker arm assembly.
2. Measure the diameter of the shaft at the first rocker location.
3. Zero the gauge (A) to the shaft diameter.
4. Measure the inside diameter of the rocker arm, and check it for an out-of-round condition.
Rocker Arm-to-Shaft Clearance:
Standard (New):
Intake: 0.026 - 0.067 mm (0.0010 - 0.0026 inch)
Service Limit: 0.067 mm (0.0026 inch)
Exhaust: 0.026 - 0.077 mm (0.0010 - 0.0030 inch)
Service Limit: 0.077 mm (0.0030 inch)
5. Repeat for all rockers and both shafts. If the clearance is over the limit, replace the rocker shaft and all overtolerance rocker arms. If any intake rocker arm needs replacement, replace all three rocker arms in that set (primary, mid, and secondary).
VTEC Rocker Arms
6. Inspect the rocker arm pistons (A). Push them manually. If they do not move smoothly, replace the rocker arm set.
NOTE:
- Apply oil to the pistons when reassembling.
- When reassembling the primary rocker arm (B), carefully apply air pressure to the oil passage of the rocker arm.