GEAR 8S6345 - Caterpillar

On later oil pumps, the alignment dowel has been removed.(1) Bore in bearing of idler gear ... 28.600 0.048 mm (1.1260 .0019 in) Diameter of shaft for the idler gear ... 28.512 0.013 mm (1.1225 .0005 in)Clearance between bearing and shaft ... 0.028 to 0.150 mm (.0011 to .0059 in)(2) Clearance between gear and body of pump ... 0.05 to 0.66 mm (.002 to .026 in)(3) Diameter of shafts for pump ... 22.217 0.005 mm (.8747 .0002 in) Bore in bearings for shafts ... 22.286 0.051 mm (.8774 .0020 in)(4) Length of gears ... 50.808 0.025 mm (2.0003 .0010 in) Depth of bore in pump body for gears ... 50.935 0.020 mm (2.0053 .0008 in)Clearance between end of gears and pump body ... 0.081 to 0.173 mm (.0032 to .0068 in)(5) Length of gears ... 38.070 0.025 mm (1.4988 .0010 in) Depth of bore in pump body for gears ... 38.197 0.020 mm (1.5038 .0008 in)Clearance between end of gears and pump body ... 0.081 to 0.173 mm (.0032 to .0068 in)(6) Torque for bolt that holds drive gear to drive shaft ... 43 7 N m (32 5 lb ft) Install the bearings in the cover and body for the oil pump so the bearing junctions (joints) are in the position shown.