3116 and 3126 Truck Engines Unit Injector Hydraulic Pump – Remove

Removal Procedure

Start By:

Remove the fuel transfer pump. Refer to Disassembly and Assembly, “Fuel Transfer Pump – Remove”.
Remove the injection actuation pressure control valve. Refer to Disassembly and Assembly, “Injection Actuation Pressure Control Valve – Remove”.


Illustration 1 g00644692

Disconnect tube assemblies (4) and (6) from unit injector hydraulic pump (1). Cap the tube assemblies immediately.

Remove bolts (5) from unit injector hydraulic pump (1). Remove unit injector hydraulic pump (1) .

Remove oil inlet port (2) and oil outlet port (3) from unit injector hydraulic pump (1) .


Illustration 2 g00644693

Remove bolt (8) and the washer from gear (9). Remove gear (9). Remove O-ring seal (7) .

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