OIL PUMP REMOVAL. See Figure 8-3 and Figure 8-4.
If engine has been pulled from generator set for shop maintenance, start at step c, below.
Drain engine oil and remove lube oil hoses and fittings associated with the prelube pump B3, oil sight gage,
lubricant temperature thermostat S101, lube oil heater H113, and lubricant temperature switch OT2, from the
oil pan, and remove the on engine duplex fuel filter set and by-pass oil filter set in accordance with the
Operator and Organizational Maintenance Manual.
See Figure 8-3 and proceed as follows to remove oil pan access plate and increase clearance beneath
engine oil pan.
Avoid dropping oil pan access plate (3) into skid base.
Remove hexagon head capscrews (1) and lockwashers (2).
Lift edge of oil panel access plate (3), grip firmly, and remove.
Remove oil pan assembly in accordance with paragraph 9-38.
Remove capscrews (1, Figure 8-4) and locknuts (2) to remove bracket damp (3).
Remove capscrews (4) and Iockplates (5) to disconnect support brackets (6 and 13) from engine.
Remove capscrews (7), lockplates (8), oil suction tube (9), and remove and discard flange gasket (10).
Remove capscrews (11), locknuts (12), and bracket damp (3) from support bracket (13).
Remove capscrews (14 and 16), lockplates (15 and 17), oil connection (18), and remove and discard the
gasket (19) and seals (20).
Remove the capscrews (21), lockplates (22), transfer tube (23), pressure relief housing (30), and remove and
discard the seal (20) and relief gasket (31).
Two persons may be required to perform the following procedure.
Remove hexagon head capscrews (24), lockplates (25), and oil pump assembly and shims (26), if used.
OIL PUMP DISASSEMBLY. See Figure 8-4.
Remove capscrews (27), lockplates (28), and lubricating pump cover (29).
Spring tension is released when retaining pin (33) is removed.
Hold tension on washer (34) and spring (35) to prevent loss of
Remove roll pin dowel (32), retaining pin (33), plain washer (34), relief spring (35), and relief plunger (36).
Remove hexagon head capscrews (37), and lockplates (38). Install two 5/16 inch, 18 thread, 1 1/4 inch long
capscrews in the threaded recesses of the lubrication pump cover (39) over the dowel pins in the lubricating
pump body (47). Turn in the capscrews against the dowel pins in the lubricating pump body (47) to remove
the lubricating pump cover (39). Remove and discard the lubricating pump gasket (40).
Do not remove the bushings (46), or the gears (41 and 44) from the
shafts (42 and 45) unless inspection shows them to be defective.
Remove lubricating pump gear (41) and lubricating pump shaft (42) as an assembly.
Using a suitable press, press lubricating pump shaft (42) out of lubricating pump drive gear (41).
Remove lubricating pump gear (44) and lubricating pump shaft (45) as an assembly.