3.2. 4. Rocker arm shaft assembly 1) Rocker arm shaft Rocker arm shaft run-out Place the rocker arm shaft on two V blocks and inspect the shaft for bend using a dial gauge. If the amount of this run-out is small, press the shaft with a bench press to correct the run-out. Replace the shaft if the measured value exceeds the limit. Rocker arm shaft diameter EDM2037I With an outside micrometer, measure the rocker arm shaft diameter at the point where the rocker arms have been installed. l Replace the rocker arm if the amount of wear is beyond the specified limit.
EA8M3002 2) Rocker arm Visual check Visually check the face of the rocker arm in contact with the valve stem end for scores and step wear. If the wear is small, correct it with an oil stone or grinding paper of fine grain size. Rocker arm with a considerable amount of step wear should be replaced. Diameter of the rocker arm bushing Measure the inside diameter of the rocker arm bushing with an inside micrometer or vernier calipers, and compare the measured values with the rocker arm shaft diameter. If the clearance exceeds the limit, replace either bushing or shaft, whichever worn more.
EA0M4059 - 65 - INSPECTION AND MEASUREMENT Limit 0.2 mm Standard Limit N23.978 ~ N23.959 mm N23.75 mm Standard Limit 0.020 ~ 0.093 mm 0.2 mm