OIL PUMP ASSEMBLY 7S1849 - Caterpillar

Illustration 1 g03079576
Table 1
Specification for 7N-8715 Engine Oil Pump Gp
Item Qty Part Specification Description
The rotation of the drive gear is clockwise when you view the engine oil pump from the drive end.
Before you install the pump, lubricate the moving parts with clean engine oil. Rotate the pump by hand in order to ensure that the pump rotates freely.
1 1 298-6387 O-Ring Seal Before assembly, lubricate the bore lightly with 5P-3975 Rubber Lubricant.
Illustration 2 g03079678
Table 2
Specification for 7N-8715 Engine Oil Pump Gp
Item Qty Part Specification Description
2 1 2S-2760 Spring Length under test force is 117.14 mm (4.612 inch).
Test force is 499 24 N (112 5 lb).
Free length after test is 152.91 mm (6.020 inch).
Illustration 3 g03079836
Section A-A
Table 3
Specification for 7N-8715 Engine Oil Pump Gp
Item Qty Part Specification Description
C 2 7N-6733 Gear Length of new gear is 54.000 0.015 mm (2.1260 0.0006 inch).
Depth of the bore in the oil pump body for the new gear is 54.15 0.02 mm (2.132 0.001 inch).
D 2 7W-1017 Shaft Diameter is 31.742 0.008 mm (1.2497 0.0003 inch).
After assembly, bore in the 7W-0060 Bushing for the new shaft assembly is 31.811 0.013 mm (1.2524 0.0005 inch).
E 2 4M-3248 Hollow Dowel Extension from the oil pump cover is 6.0 0.5 mm (0.24 0.02 inch).
F - - Distance from the end of the idler shaft to the gear face is 34.0 0.5 mm (1.34 0.02 inch).
G 1 7N-5058 Pump Drive Shaft Diameter is 31.742 0.008 mm (1.2497 0.0003 inch).
After assembly, bore in the 7W-0060 Bushing for the new shaft assembly is 31.811 0.013 mm (1.2524 0.0005 inch).
H - - Distance from the end of the shaft to the gear face is 47.0 0.5 mm (1.85 0.02 inch).
J 1 7W-0050 Pump Cover Installation depth of 7W-0060 Bushing in the pump cover is 1.5 0.5 mm (0.06 0.02 inch).
K 1 7W-0051 Oil Pump Body As Installation depth of 7W-0060 Bushing in the oil pump body assembly is 1.5 0.5 mm (0.06 0.02 inch).
Illustration 4 g03079878
Table 4
Specification for 7N-8715 Engine Oil Pump Gp
Item Qty Part Specification Description
L 2 7N-2043 Dowel Extension from the oil pump cover is 6.0 1.0 mm (0.24 0.04 inch).
Illustration 5 g03079902
Illustration 6 g03079958
Table 5
Specification for 7N-8715 Engine Oil Pump Gp
Item Qty Part Specification Description
M - - Position of 7W-0060 Bushing joints from the centerline through the bearing bores is 45 15 degrees.