Answer
Apr 10, 2025 - 10:29 AM
The pump driveshaft nose and drive gear shaft mating surface must be clean and dry prior to assembly.
Wipe off the driveshaft and gear with solvent and a lint free cloth. Do not touch the mating surface after wiping.
Install the drive gear onto the driveshaft.
Install the driveshaft lock washer and retaining nut and hand-tighten.
Use the fuel pump gear retention tool, Part Number 3164707, and a ½-inch breaker bar to hold the drive gear in place while tightening the drive gear retaining nut.
Torque Value: 105 n•m [ 77 ft-lb ]Lubricate the seal ring and the mounting bore of the gear housing with clean 15W-40 engine oil.
Note : Timing of the high-pressure pump with the crankshaft is not required.
Install the fuel pump on the gear housing.
Position the injection pump to the mounting flange on the gear housing while aligning the injection pump shaft through the back of the injection pump gear .
Note : The engine barring tool, Part Number 3824591, can be used to help align the gear s.
After the pump is positioned flat to the mounting flange, install three pump mounting nuts (3) and hand-tighten only.
Note : Do not attempt a final tightening at this time. Do not attempt to tighten (pull) the pump to gear housing using the mounting nuts. Damage to the pump or gear housing can occur.
The pump must be positioned flat to the mounting flange before attempting to tighten the three mounting nuts.
Tighten the fuel pump mounting fasteners.
