BUSHING 4V4453 - Caterpillar

(1) Bore in bearing for piston pin (new): 5S6360 Rod ... 1.5017 .0003 in.(38.143 0.008 mm)8N1894 Rod ... 1.5017 .0003 in.(38.143 0.008 mm)5S2793 Rod ... 1.7012 .0003 in.(43.210 0.008 mm)6N8069 Rod ... 1.7012 .0003 in.(43.210 0.008 mm)Maximum permissible clearance between bearing and piston pin (worn) ... .003 in.(0.08 mm)(2) Bore in connecting rod for bearing ... 3.2500 .0005 in.(82.550 0.013 mm)(3) Distance between center of piston pin and center of crankshaft bearing (new) ... 9.595 .001 in.(243.71 0.02 mm)(4) Diameter of piston pin (new): 9H4016 Pin ... 1.5003 .0002 in.(38.108 0.005 mm)7N9804 Pin ... 1.5003 .0002 in.(38.108 0.005 mm)8M6487 Pin ... 1.6998 .0002 in.(43.175 0.005 mm)7N9805 Pin ... 1.6998 .0002 in.(43.175 0.005 mm)(5) Clearance between connecting rod bearing and crankshaft bearing surface (journal) ... .0030 to .0066 in.(0.076 to 0.168 mm) Maximum permissible clearance between bearing and crankshaft (worn) ... .010 in.(0.25 mm)(6) Torque on nut for connecting rod: a. Put engine oil on threads and nut seat.b. Tighten both nuts to ... 30 3 lb. ft.(40 4 N m)c. Mark each nut and end of bolt.d. Again tighten both nuts (from mark) ... 90°Install the connecting rod in the piston with the slot for the bearing tab on the same side as the V mark on the piston.Make reference to Special Instructions, Form No. GMG02394 and SMHS7366 for information about checking and reconditioning connecting rods.