MOUNTING GP-ALTERNATOR & COMPR 3488113 - Caterpillar

Illustration 1 g00598058
Front view
Illustration 2 g00598093
Top view (1) Crankshaft gear (2) Oil pump idler gear (3) Oil pump housing (4) Distance from top surface of supports to top of sleeves ... 5.0 0.5 mm (0.20 0.02 inch) (5) Timing markTurn the crankshaft to top center compression stroke for the No. 1 piston. Align the timing marks on the balancer gears (11) with the holes (6) in the oil pump body. (6) Holes in oil pump body (7) Oil pump drive gear (8) Rear support Diameter of bores ... 48.540 0.025 mm (1.9110 0.0010 inch) Diameter of balancer shafts ... 48.40 0.02 mm (1.906 0.001 inch) (9) Center support Diameter of bores ... 51.561 0.020 mm (2.0300 0.0008 inch) Diameter of balancer shafts ... 48.40 0.02 mm (1.906 0.001 inch)Note: The bearings in the center support must be even with the front face of the support. (10) Oil pump housing Diameter of bores ... 48.540 0.025 mm (1.9110 0.0010 inch) Diameter of balancer shaft ... 48.40 0.02 mm (1.906 0.001 inch) (11) Balancer gears Heat the gear to the following temperature for installation. Do not use a torch. ... 315 °C (599 °F)
Illustration 3 g00598120
View A-A (12) Thrust pin Diameter at each end ... 5.89 0.13 mm (0.232 0.005 inch) (B) Distance across flats ... 6.86 0.03 mm (0.270 0.001 inch) (13) Snap ring (14) Plate (15) Isolator