Cummins/Onan — Oil Pump Removal and Reinstallation
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan NHP / NHPV engine
Procedure
- Crankcase turned on left side.
- Unscrew oil pump assembly from intake cup.
- Check oil pump thoroughly for worn parts.
- Oil the pump to prime it before reinstalling.
- Install a new pump assembly if required.
- To reassemble, reverse the procedure.
Specs & values
- Components not available individually except gaskets and suction cup
Source: Cummins/Onan service 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.