Cummins/Onan — Prime Raw Water Pump
Maintenance
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKUB, Cummins/Onan MDKWB, Kubota Z482B engine, Kubota D722B engine
Before you start
- The neoprene impeller must never be run dry.
Procedure
- Remove the outlet hose at the pump connection.
- Fill the pump with water and replace components.
- When the genset is started, check the exhaust outlet for delivery of water to the system.
Full service-parts list: Cummins/Onan MDKUB →, Cummins/Onan MDKWB →, Kubota Z482B engine →
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.