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2-106 FC045 PISTON PIN AND PISTON-PIN 1. Measure the piston pin diameter at each end and in the center. Acceptable piston pin measurement must be within specifications. If any measurement varies by more than 0.02 mm (0.001 in.), the pis- ton pin and bearing must be replaced as a set. AN056 2. Insert a snap gauge into each piston-pin bore; then remove the gauge and measure it with a microme- ter. The diameter measurement must be within specifications. Take two measurements to ensure accuracy. AC092 CONNECTING-ROD SMALL END 1. Insert a snap gauge into each connecting-rod small end bore; then remove the gauge and measure it with a micrometer. AN061 2. The diameter measurement must be within specifi- cations. CRANKSHAFT RUNOUT 1. Using the V Blocks (p/n 0644-022), support the crankshaft on the surface plate. NOTE: The V blocks should support the crank- 2. Mount a dial indicator and base on the surface plate. Position the indicator contact point against the crankshaft location point F (PTO-end) from the crankshaft end. Zero the indicator and rotate the crankshaft slowly. Note the amount of crankshaft runout (total indicator reading). NOTE: For runout location point specifications, 3. Position the indicator contact point against the crankshaft location point D (MAG-end) from the crankshaft end. Zero the indicator and rotate the crankshaft slowly. Note the amount of crankshaft runout (total indicator reading). FC046 |