IMPELLER 6N6423 - Caterpillar

Illustration 1 g06281270
Table 1
Item Qty Part Specification Description
Before you install the pump, lubricate the moving parts with clean engine oil. Rotate the pump by hand to ensure that the pump rotates freely.
1 1 236-6733 Spring Length under test force is 82.87 mm (3.263 inch).
Test force is 709 35 N (160 8 lb).
Free length after test is 130 mm (5 inch).
2 1 516-6890 Drive Diameter of the new shaft is 22.217 0.005 mm (0.8747 0.0002 inch).
Distance from the end of the shaft to the gear face is 53.00 0.25 mm (2.087 0.010 inch).
3 1 516-6891 Shaft Idler Diameter of the new shaft is 22.217 0.005 mm (0.8747 0.0002 inch).
Distance from the end of the shaft to the gear face is 36.50 0.25 mm (1.437 0.010 inch).
Illustration 2 g06281275
116-1979 Oil Pump Body As
Table 2
Item Qty Part Specification Description
4 2 7N-2156 Bushing Installation depth (D) is 0.30 0.25 mm (0.012 0.010 inch).
Position (B) of bushing joints from the centerline through the bearing bores is 30 15 degrees.
5 2 8M-8489 Dowel Protrusion (E) is 6.4 0.5 mm (0.25 0.02 inch).
Illustration 3 g06281284
127-6356 Pump Cover
Table 3
Item Qty Part Specification Description
6 2 8S-6511 Bushing Install the bushing flush with face (7).
Position (F) of bushing joints from the centerline through the bearing bores is 30 15 degrees.