VALVE GP-RELIEF 1175270 - Caterpillar

(1) Bore in bearing for piston pin (new) ... 2.4513 .0003 in.(62.263 0.008 mm)(2) Bore in connecting rod for bearing ... 4.4400 .0005 in.(112.776 0.013 mm)(3) Distance between center of piston pin and center of crankshaft bearing (new) ... 15.000 in.(381.00 mm)(4) Diameter of piston pin (new) ... 2.4498 .0002 in.(62.225 0.005 mm) Clearance between bearing in rod and piston pin ... .0015 .0005 in.(0.038 0.013 mm)Maximum permissible clearance between bearing in rod and piston pin ... .003 in.(0.08 mm)(5) Clearance between connecting rod bearing and crankshaft bearing surface (journal) ... .0035 to .0077 in.(0.089 to 0.196 mm) Maximum permissible clearance between bearing and crankshaft (worn) ... .012 in.(0.30 mm)(6) Torque on nut for connecting rod: a. Put crankcase oil on threads and nut seat.b. Tighten both nuts to ... 75 5 lb. ft.(100 7 N m)c. Mark each nut and end of bolt.d. Again tighten both nuts (from mark) ... 60° 5°The number of the cylinder is marked on the rod and bearing cap on the side opposite the "V" mark on the top of piston. Piston pin bearing junction and locating notch must be assembled as shown. Bearing junction can be located at either position "A".