C175-16 and C175-20 Generator Set Engines Caterpillar


Oil Pump

Usage:

C175-20 BXR


Illustration 1g03176936

Table 1
Specification for 340-9261 Engine Oil Pump Gp 
Item  Qty  Part  Specification Description 
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. 
340-9262 Drive Shaft As  Diameter is 50.793 ± 0.005 mm (1.9997 ± 0.0002 inch).
Distance (B) from end of the shaft to gear face is 91.40 ± 0.05 mm (3.598 ± 0.002 inch)
266-5370 Oil Pump Shaft Assembly  Diameter is 50.795 ± 0.005 mm (1.9998 ± 0.0002 inch).
Distance (C) from end of the shaft to gear face is 41.5 ± 0.5 mm (1.63 ± 0.02 inch)
266-5372 Gear  Length of the new gear is 137.160 ± 0.013 mm (5.4000 ± 0.0005 inch).
Depth of the bore in the oil pump body for new gear is 137.30 ± 0.02 mm (5.406 ± 0.001 inch).
Before installation, bore in the gear for shaft assemblies is 50.732 ± 0.008 mm (1.9973 ± 0.0003 inch)


Illustration 2g03176937
266-5366 Oil Pump Body As

Table 2
Item  Qty  Part  Specification Description 
Position for the bushing joints from the centerline through the bushing bores of the oil pump body assembly is 30 ± 15 degrees. 
262-0562 Bushing  After installation, bore in the bushing for oil pump drive shaft assembly is 50.918 ± 0.040 mm (2.0046 ± 0.0016 inch).
Installation depth (F) is 1.50 ± 0.25 mm (0.059 ± 0.010 inch)
255-4854 Bushing  After installation, bore in the bushing for oil pump shaft assembly is 50.918 ± 0.040 mm (2.0046 ± 0.0016 inch).
Installation depth (F) is 1.50 ± 0.25 mm (0.059 ± 0.010 inch)


Illustration 3g03176938
255-4842 Oil Pump Cover

Table 3
Item  Qty  Part  Specification Description 
Position for the bushing joints from the centerline through the bushing bores of the oil pump cover is 30 ± 15 degrees. 
255-4854 Bushing  After installation, bore in the bushing for oil pump shaft assembly is 50.918 ± 0.040 mm (2.0046 ± 0.0016 inch).
Installation depth (J) is 1.5 ± 0.5 mm (0.06 ± 0.02 inch)
262-0562 Bushing  After installation, bore in the bushing for oil pump drive shaft assembly is 50.918 ± 0.040 mm (2.0046 ± 0.0016 inch).
Installation depth (J) is 1.5 ± 0.5 mm (0.06 ± 0.02 inch)
7N-5683 Dowel  Extension of dowels from the oil pump cover is 8.0 ± 0.5 mm (0.31 ± 0.02 inch)

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