PIN-SPRING 7Y5272 - Caterpillar

(1) Bore in connecting rod for piston pin bearing ... 55.435 0.013 mm (2.1825 .0005 in) The connecting rod must be heated for installation of piston pin bearing. Do not use a torch.(2) Distance rod may be heated to 175 to 260°C (347 to 500°F) to install the piston pin bearing ... 85.0 mm (3.35 in)(3) Bore in bearing for piston pin (new) ... 50.830 0.008 mm (2.0012 .0003 in)Diameter of piston pin (new) ... 50.795 0.005 mm (2.0000 .0002 in)Thoroughly lubricate piston pin with clean engine oil prior to inserting into piston group and rod assembly.(4) Bearing joint must be at either location ... 10 degrees(5) Distance between center of bearings ... 225.00 mm (8.858 in)(6) Bore in bearing for crankshaft journal ... 82.116 0.030 mm (3.2329 .0012 in)(7) Location for etching cylinder number on connecting rod and cap. Rods and caps are to be marked with numbers 1 thru 6 on the same side of the rod as the bearing retainer notch. Install connecting rod in engine with the part number to the rear of the engine.(8) Tighten connecting rod bolts as follows: a. Before installing bolts, lubricate bolt threads and seating faces of the caps with 2P2506 Thread Lubricant.b. Tighten each bolt to ... 130 7 N m (95 5 lb ft).c. Put an alignment mark on each cap and nut.d. Tighten each nut an additional ... 60 5 degrees (1/6 turn)(9) Bore in connecting rod for crankshaft rod journal bearing ... 86.800 0.013 mm (3.4173 .0005 in)