Cummins/Onan — Water Pump #132-0110 Disassembly
Repair & overhaul
From a Cummins/Onan service manual covering: 12.0MDJC, 15.0MDJF, 3.0MDJA, 6.0MDJB, 7.5MDJE. Check it applies to your exact model before use.
Applies to: Cummins/Onan 3.0MDJA, Cummins/Onan MDJA, Cummins/Onan MDJC, Cummins/Onan MDJE, Cummins/Onan MDJF, Cummins/Onan MDJA engine, Cummins/Onan MDJB engine, Cummins/Onan MDJE engine, Cummins/Onan MDJC engine, Cummins/Onan MDJF engine
Procedure
- Remove water inlet fitting, drive belt pulley, cover screws, and pump cover gasket.
- Unscrew threaded impeller from pump shaft counterclockwise.
- Slide seal seat, wear face, and bellows assembly off shaft.
- Loosen clamp screw and slide pump body off pedestal.
- Remove bearing lock ring and drive shaft and bearing assembly out of pedestal.
Full service-parts list: Cummins/Onan 3.0MDJA →, Cummins/Onan MDJA →, Cummins/Onan MDJC →, Cummins/Onan MDJE →, Cummins/Onan MDJF →
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.