Cummins/Onan — Disconnecting Generator Set Systems (Set Removal)
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKAQ, Cummins/Onan HDKAR
Before you start
- Generator set is heavy; use adequate lifting devices and keep hands and feet clear.
- Leakage of fuel presents a fire or explosion hazard; plug all fuel line openings and keep an ABC fire extinguisher nearby.
Procedure
- Disconnect the generator set negative (-) battery cable at the battery terminal.
- Disconnect the generator set positive (+) battery cable from the starter solenoid.
- Disconnect the remote control plug wire from the generator set (if applicable).
- Disconnect the generator set load wires; tag for identification when reconnecting.
- Disconnect the exhaust system and support brackets or hangers to allow set removal.
- Disconnect the fuel line at the generator set fuel pump; securely plug the fuel line end.
- Verify the set is adequately supported before loosening any mounting bolts or supports.
Tools required
- Adequate lifting devices Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKAQ →, Cummins/Onan HDKAR →
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.