GUIDE-VALVE 2N9298 - Caterpillar

Illustration 1 g02573162
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 the 4N-0733 Engine Oil Pump Gp and 4n-8734 Engine Oil Pump Gp    
Item     Qty     Part     Specification Description    
-     -     -     Flush 8S-6511 Bushing with the face of the pump cover.    
1     1     2S-2760 Spring     Length under test force is
117.14 mm (4.612 inch).    
Test force is
499 24 N (112 5 lb).
Approximate free length after test is
152.91 mm (6.020 inch).
A     1     4N-5273 Pump Drive Shaft     Diameter of pump drive shaft is
22.217 0.005 mm (0.8747 0.0002 inch).
Bore in oil pump cover for pump drive shaft is
25.400 0.013 mm (1.0000 0.0005 inch).    
B     1     1W-7240 Gear     Length of the gear is
79.375 0.025 mm (3.1250 0.0010 inch).    
Depth of bore is
79.502 0.020 mm (3.1300 0.0008 inch).
2     1     -     Install the bushings so that the bushings are even with the outside of the oil pump body.
Angle from the centerline of the oil pump body to the bushing joint of the bushing is 30 15 degrees.    
D     1     8M-8489 Dowel     Installation depth of the dowel in the oil pump is
6.4 0.5 mm (0.25 0.02 inch).    
E     1     -     Installation depth of the bushing in the oil pump housing is
0.30 0.25 mm (0.012 0.010 inch)