TRANSFORMER 7W4377 - Caterpillar

Illustration 1 g00295804 (1) Fuel injection pump gear Bore ... 36.00 to 36.06 mm (1.417 to 1.420 inch)Tighten the four bolts to the following torque. ... 28 N m (21 lb ft)Tighten the two torx screws to the following torque. ... 9 N m (7 lb ft)Note: The torx screws retain the timing plate on the front of the gear. This plate is installed in the factory after the fuel injection pump timing has been accurately set to the top center position on the compression stroke of the No. 1 cylinder. If the timing plate is moved, the timing of the fuel injection pump must be set.Note: The crankshaft must not be turned unless the fuel injection pump gear is installed.Note: Do not remove the nut that retains the hub of the fuel injection pump to the shaft of the fuel injection pump. If the hub is removed, the hub must be positioned by correctly trained personnel and special test equipment. (2) Camshaft gear Diameter of the camshaft gear bore ... 34.930 to 34.950 mm (1.3752 to 1.3760 inch)Outside diameter of camshaft hub ... 34.900 to 34.920 mm (1.3741 to 1.3747 inch)Clearance between the camshaft gear and the camshaft hub ... 0.008 to 0.048 mm (0.0003 to 0.0019 inch) (3) Tighten the bolt for the camshaft gear to the following torque. ... 95 N m (70.0682 lb ft) (4) Idler gear and hub Diameter of the idler gear bore ... 57.14 to 57.18 mm (2.250 to 2.251 inch)Width of the idler gear and split bearing assembly ... 30.14 to 30.16 mm (1.186 to 1.187 inch)Inside diameter of the idler gear bearing ... 50.78 to 50.80 mm (1.999 to 2.000 inch)Outside diameter of the idler gear hub ... 50.70 to 50.74 mm (1.996 to 1.998 inch)Clearance of the bearing on the idler gear hub ... 0.04 to 0.10 mm (0.002 to 0.004 inch)Idler gear end play ... 0.10 to 0.20 mm (0.004 to 0.008 inch)Maximum permissible end play ... 0.38 mm (0.015 inch)Backlash (minimum) ... 0.08 mm (0.003 inch) (5) Tighten the bolts for the idler gear to the following torque: ... 44 N m (33 lb ft) (6) Crankshaft gear Diameter of the bore of the crankshaft gear ... 47.625 to 47.650 mm (1.8750 to 1.8760 inch)Outside diameter of the crankshaft for the crankshaft gear ... 47.625 to 47.645 mm (1.8750 to 1.8758 inch)Clearance of the crankshaft gear on the crankshaft for a press fit ... 0.015 0.035 mm (0.0006 0.0014 inch) (7) Oil pump idler gear Inside diameter of the bearing ... 22.230 to 22.260 mm (0.8750 to 0.8766 inch)Outside diameter of the idler gear shaft ... 22.19 to 22.21 mm (0.873 to 0.874 inch)Clearance of the gear on the shaft ... 0.020 to 0.066 mm (0.0008 to 0.0026 inch)Idler gear end play ... 0.012 to 0.643 mm (0.0005 to 0.0253 inch)Timing gear backlash (minimum) ... 0.08 mm (0.003 inch)Balancer (If equipped)
Diameter of drive shaft for front bearing ... 28.562 to 28.575 mm (1.1245 to 1.1250