Pistons, Rods and Cylinder Block Assembly Apply clean engine oil to all parts during assembly. IMPORTANT: Pistons must be installed on the same connecting rod they were removed from. 1. Assemble piston to connecting rod with piston recess on same side as connecting rod “punched” alignment mark. If a new connecting rod is used, assemble piston to connecting rod with piston recess opposite connecting rod bearing insert groove. Oil Ring Gap 1 2. Install piston pin and snap rings. Piston Pin Piston Recess M82046A Piston 5. Install second compression ring, with chamfer toward top of piston, in middle groove. Turn ring until gap is 120 o away from oil ring gap. 6.
Install first compression ring (chrome plated), with manufacturer's mark “T”, “R” or “RN” (near ring gap) toward top of piston, in top groove. Turn ring until gap is 120 o away from second ring gap. Retaining Ring 1st Compression Ring 2nd Compression Ring Alignment Mark 1st Compression Ring Bearing Insert Groove M82275A 2nd Compression Ring 120° 120° 3. Install oil ring expander in bottom ring groove of piston with ends above either end of piston pin. 120° Oil Ring 4. Install oil ring over expander with ring gap opposite (180 o ) of expander ends. M82276A 4/7/95 1-35 AllTractorManuals.com Oil Ring Expander Ex Oil Ex Oil Ring Piston Pin Con Rod necting