MOTOR-START 4394455 - Caterpillar

Connecting Rod Bearing Journals
Refer to Guideline For Reusable Parts And Salvage Operations, SEBF8009, "Main and Connecting Rod Bearings".Refer to Guideline For Reusable Parts and Salvage Operations, SEBF8041, "Specifications for Crankshaft in Caterpillar Engines" for 3500 Engines.Refer to Guideline For Reusable Parts and Salvage Operations, SEBF9217, "Specifications for Crankshaft in Caterpillar Engines" for C7-C32 Engines.Clearance between new bearing and new journal ... 0.070 to 0.178 mm (0.0028 to 0.0070 inch)Main Bearing Journals
Table 1
Main Bearing Journals
Original Size Journal 120.650 0.020 mm (4.7500 0.0008 inch)
Undersize Journal 0.63 mm (0.025 inch) 120.015 0.020 mm (4.7250 0.0008 inch)
Undersize Journal 1.27 mm (0.050 inch) 119.380 0.020 mm (4.7000 0.0008 inch) Main bearing cap with two boltsClearance between new bearing and new journal ... 0.076 to 0.186 mm (0.0030 to 0.0073 inch)Main bearing cap with four boltsClearance between new bearing and new journal ... 0.071 to 0.178 mm (0.0028 to 0.0070 inch)
Table 2
Main Bearing Bore
Original Size of the Bore In the Block 129.891 0.013 mm (5.1138 0.0005 inch)
Oversize Bore 0.63 mm (0.025 inch) 130.526 0.013 mm (5.1388 0.0005 inch)