BODY 3C8629 - Caterpillar

Illustration 1 g02632019
Before operation, the pump must be lubricated with clean engine oil and the pump must turn freely by hand or damage to parts can be the result.
Table 1
Specification for 198-1508 Engine Oil Pump Gp
Item Qty Part Specification Description
1 1 2S-2760 Spring Length under test force is 117.14 mm (4.612 inch).
Test force is 499 24 N (112.2 5.4 lb).
Approximate free length after test is 152.91 mm (6.020 inch).
2 1 202-3572 Drive Shaft As Diameter of shaft is 22.217 0.005 mm (0.8747 0.0002 inch).
3 1 145-8503 Idler Shaft Assembly Diameter of shaft is 22.217 0.005 mm (0.8747 0.0002 inch).
4 2 4N-5274 Bushing Bore of the bushing after installation is 20.361 0.008 mm (0.8016 0.0003 inch)
Installation depth is 1.52 mm (0.060 inch)
Position of the bearing joint from the centerline through the bearing bore is 30 15 degrees.
B 1 7W-7141 Pump Gear Length is 65.07 0.05 mm (2.562 0.002 inch).
Depth of bore for the pump gear is 65.197 0.020 mm (2.5668 0.0008 inch).
C 1 1W-7240 Gear Length is 79.375 0.025 mm (3.1250 0.0010 inch)
Depth of bore for the gear is 79.502 0.02 mm (3.1299 0.0008 inch)
Illustration 2 g02632020
Table 2
Specification for 198-1508 Engine Oil Pump Gp
Item Qty Part Specification Description
E - - Position of the bearing joint from the centerline through the bearing bore is 30 15 degrees.
F 2 7N-2156 Bushing Installation depth is 0.30 0.25 mm (0.012 0.010 inch).
G 2 8M-8489 Dowel Dimensions to install the dowels from the bottom surface of the oil pump body is 6.4 0.5 mm (0.25 0.02 inch).