Front Gear Train The purpose of this test is to check lift pump flow. Disconnect the filter head fuel supply line quick disconnect at the high pressure fuel pump inlet fitting. Attach the fuel drain hose, Part Number, 4918433, fuel supply line from the filter head. Place the end of the hose in a graduated… Read More »
Front gear train engines use an electric motor driven lift pump that is located in the fuel tank, which is installed by the OEM. For repair related information, refer to the OEM service information. Rear gear train engines do not utilize an electric motor driven lift pump. An OEM-installed hand priming pump is used to… Read More »
Front Gear Train Install a new seal ring on the front of the fuel pump assembly. Be sure the seal ring is not twisted. Lubricate the seal ring and the mounting bore of the gear housing with clean 15W-40 engine oil. The fuel pump driveshaft nose and drive gear shaft mating surfaces must be clean… Read More »
Rear Gear Train Install a new seal ring on the front of the fuel pump assembly. Be certain the seal ring is not twisted . Lubricate the seal ring and the mounting bore of the gear housing with clean 15W-40 engine oil. The pump driveshaft nose and drive gear shaft mating surface must be clean… Read More »
Clean the fuel pump with solvent. Dry with compressed air. Inspect the driveshaft and gear for damage. Replace if damage is found. Inspect the o-ring seal for damage. Replace if damage is found. Inspect the o-ring seal area for damage. Clean and repair any burred surfaces. Inspect the gear housing, high-pressure pump mounting bore, and… Read More »
Rear Gear Train Use a fuel pump retention tool, Part Number 3164707, and a 1f2-inch breaker bar to retain the fuel pump drive gear. Loosen the clamp load of the fuel pump drive gear retaining nut by rotating it counterclockwise. Do not remove the retaining nut from the shaft. Install a bearing separator, Part Number… Read More »
Front Gear Train Remove the fuel pump drive access cover with a 3/8-inch drive ratchet. NOTE: The engine barring tool, Part Number 3824591, can be used to prevent the crankshaft from rotating while removing the retaining nut. Remove the fuel pump drive gear retaining nut and lock washer. Install the spacer, Part Number 4918317, from… Read More »
If the engine will not start, disconnect the high-pressure fuel outlet line from the high-pressure injection pump. Refer to Procedure 006-071 in Section 6. Disconnect the fuel pump actuator connector. Insert a piece of tubing over the outlet fitting of the fuel pump and route it into a 500 ml [17 oz] graduated beaker, Part… Read More »
There are three different mounting locations available for high-pressure fuel pumps. The pump can be mounted in a high or low position on rear gear train engines or high position on the front gear train engines. Rear gear train (low mount shown). Shown is the high-pressure fuel pump on a front gear train engine.
Rear Gear Train Place the fuel heater, gasket side facing up, against the filter head. NOTE: Do not apply an excessive amount of thread locker due to its being passed into the fuel pump after installation. Apply thread locker, Part Number 3375068, or equivalent, to the filter spud. Install the fuel filter spud. Torque Value:… Read More »