Piston Pin Replacement
- Piston pin is press fit into connecting rod and has sliding fit in piston. To remove, set piston and rod assembly in Hydraulic Press (Pin Stand KV101070S0). Press pin out of rod. DO NOT damage piston during removal.
- Check pin and pin hole for signs of gauling or excessive wear. Using micrometer and telescopic hole gauge, measure diameter of piston pin, piston pin hole, and rod small end. Determine pin-to-piston and pin-to-rod clearance.
- Standard pin diameter is .7872-.7874" (19.995-20.000 mm). Standard piston pin hole inside diameter is .7875-.7879" (20.003-20.012 mm).
- Check pin-to-piston clearance and pin-to-rod interference fit in specifications table. To assemble piston and rod, warm piston to room temperature.
- Lubricate with oil and insert pin into piston with finger pressure only. Hold piston and rod in proper alignment and press in pin. See Fig 1 . Assemble with oil hole of rod big end toward right side of block.