3116 and 3126 Truck Engines Engine Oil Pump – Disassemble

Disassembly Procedure
Start By:

Remove the engine oil pump. Refer to Disassembly and Assembly, “Engine Oil Pump – Remove”.
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
Remove shaft assembly (11) and shaft assembly (12) from oil pump body (9) .


Illustration 6 g00824021
Remove the following items from oil pump body assembly (7) : the bolt and the washer, spring (14) and oil pressure relief plunger (13)

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