CHAMBER A. 3S2750 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-0510 Driver Gp 1
B 1P-2320 Combination Puller 1 Start By:
Remove the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Note: For information on the reusability of the engine oil pump, refer to Guideline For Reusable Parts And Salvage Operations, SEBF8167, "Reconditioning Procedures 3114 and 3116 Engines".
Illustration 1 g00614664
Remove the bolts from tube assembly for the pickup of oil (2), and the gasket from the engine oil pump. Remove the bolt and outlet elbow (1) from the engine oil pump.
Illustration 2 g00614677
Remove bolt (3), washer (4), and idler gear (5) from the engine oil pump.
Illustration 3 g00614683
Use Tooling (A) and a suitable press in order to remove the bearing from idler gear (5).
Remove shaft (6) of engine oil pump from oil pump body assembly (7).
Use Tooling (B) to remove drive gear (8).
Illustration 4 g00614689
Remove bolts (10). Separate oil pump body (9) from oil pump body assembly (7).
Illustration 5 g00614694
Before removing the drive shaft from the pump housing, be sure that no burrs exist on the drive shaft. If the drive shaft has burrs on it, the bores in the pump housing may be scratched.
Remove shaft assembly (11) and shaft assembly (12) from oil pump body (9).
Illustration 6 g00824021
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Remove the following items from oil pump body assembly (7): the bolt and the washer, spring (14) and oil pressure relief plunger (13)