PISTON 0023508 - Caterpillar

Specifications for Measurement of the C175 Oil Scavenge Pump
Illustration 41 g06305704
Table 17
Specifications for Reusability for C175 Engine Oil Scavenge Pump Components(1)
Item Name Part Number
342-7800
524-1308
Minimum Maximum
A Length of gears 147.307 mm (5.7995 inch) 147.333 mm (5.8005 inch)
Depth of bores for gears 147.440 mm (5.8047 inch) 147.480 mm (5.8063 inch)
B Diameter of gear shafts 50.787 mm (1.9995 inch) 50.958 mm (2.0062 inch)
Bore in bearings for the gear shafts after assembly 50.878 mm (2.0031 inch) 50.958 mm (2.0062 inch)
Bore in oil pump body for bearings 50.878 mm (2.0031 inch) 50.958 mm (2.0062 inch)
C Distance of the extension of the dowels from the cover 7.500 mm (0.2953 inch) 8.500 mm (0.3346 inch)
D Distance from the end of the idler shaft of the pump to the gear face 41.100 mm (1.6181 inch) 42.100 mm (1.65748 inch)
E Distance from the end of the pump drive shaft to the gear face 41.100 mm (1.6181 inch) 42.100 mm (1.65748 inch)
F Depth of installation for bearings in cover 1.000 mm (0.0394 inch) 2.000 mm (0.0787 inch)
G Depth of bearings in body 1.000 mm (0.0394 inch) 2.000 mm (0.0787 inch)
(1) Oil pump shafts are not reusable.Note: Oil pump shafts are currently not reusable.Assembly Procedure for C175 Oil Scavenge Pump
Illustration 42 g06305706
(A) ( B) Split in the Cap Bearings
(C) ( D) Split in the Body BearingsDuring the installation of the sleeve bearings, the split in the bearings should be 30° from the centerline of the bearing bores, as shown. Use 1P-0510 Driver to install a sleeve bearing (6). Be sure to install the bearings to the correct depth.C175 Pressure Regulator and Pressure Relief Valve
The pressure regulator and pressure relief valve are one combined assembly on C175 engines. The pressure regulator on the C175 engines monitors main engine oil galley pressure and maintains oil pressure independent of engine speed. The relief valve relieves the system if there happens to be a pressure spike.Storage
Proper protection of the individual parts within the