Cummins/Onan — Fuel Pump Removal
Repair & overhaul
From a Cummins/Onan owner's manual covering: K1800, K2000E, K38, K50, KT38, KTA38, KTA50, KTTA38, KTTA50, KtA38, KtA50, KttA38. Check it applies to your exact model before use.
Applies to: Cummins/Onan K38, Cummins/Onan K50, Cummins/Onan KTA38, Cummins/Onan KTA50, Cummins/Onan K38 and K50 engine
Procedure
- Disconnect the negative battery cable first, then the positive cable.
- Clean the fuel pump and surrounding area before removing it.
- Disconnect the wires to the fuel shutoff valves.
- Disconnect the linkage from the throttle lever.
- Remove throttle/braking cylinder air inlets, vent line and bracket mounting capscrews, if applicable.
- Disconnect the fuel tubing and air hose.
- Remove the four mounting capscrews and the fuel pump.
- Remove the drive coupling and remove and discard the gasket.
Full service-parts list: Cummins/Onan K38 →, Cummins/Onan K50 →, Cummins/Onan KTA38 →, Cummins/Onan KTA50 →
Source: Cummins/Onan owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.