ADAPTER 3N7254 - Caterpillar

(1) Before installation do not heat thrower, sleeve or gear higher than maximum temperature of ... 300° F(149° C)(2) Diameter of crankshaft bearing surface (journal) for connecting rod bearing* ... 4.3750 .0005 in.(111.125 0.013 mm) Clearance between connecting rod bearing and crankshaft (new) ... .0028 to .0059 in.(0.069 to 0.150 mm)Maximum permissible clearance ... .008 in.(0.20 mm)(3) Diameter of crankshaft bearing surface (journal) for main bearing* ... 5.2500 .0005 in.(133.350 0.013 mm) Clearance between main bearing and crankshaft (new) ... .0045 to .0076 in.(0.117 to 0.193 mm)Maximum permissible bearing clearance between main bearing and crankshaft (worn) ... .009 in.(0.23 mm)(4) End play for the crankshaft ... .010 to .025 in.(0.25 to 0.64 mm)*Bearings are available in .025 in. (0.64 mm) and .050 in. (1.27 mm) undersize. Decrease the above standard measurements the amount the bearing is undersize.