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Rocker Arms and Shafts Clearance Inspection Measure the intake rocker shafts and exhaust rocker shaft. 1. Measure the diameter of the shaft at the first rocker location. Surface should be smooth. MICROMETER 2. Zero the gauge to the shaft diameter. MICROMETER CYLINDER BORE 3. Measure the inside diameter of each rocker arm, and check for an out-of-round condition. Rocker Arm-to-Shaft Clearance: (0.0007 - 0.0021 in) Service Limit: 0.08 mm (0.003 in) Inspect rocker arm face for wear. 4. Repeat for all rockers. If over the service limit, replace the rocker shaft and Main Menu Table of Contents |