Cummins/Onan — Oil By-Pass − Inspect And Reuse (Horizontal)
Maintenance
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKAJ, Cummins/Onan HDKAK
Procedure
- Disconnect and connect wiring harness, coolant hoses
- Drain and refill engine fluids
- Remove and install cover and panels, oil by-pass valve, O-ring, belt and belt guards
- Clean and visually inspect bore, O-ring, valve assy
- Test run unit
Specs & values
- SRT 07-410
- 1.2 hours
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKAJ →, Cummins/Onan HDKAK →
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.