Cummins/Onan — Removal of Engine-Generator-Muffler Assembly
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKC, Cummins/Onan HDKCA, Cummins/Onan HDKCB
Before you start
- Disconnect negative battery cable before removing housing panel or access door.
Procedure
- Remove all housing panels except inner bulkhead.
- Drain cooling system and disconnect radiator and vent hoses.
- Remove blower assembly and radiator.
- Disconnect generator cooling air tube, battery cables and base grounding strap.
- Disconnect wiring harness lead to fuel pump and fuel hoses at engine.
- Disconnect flexible connector from muffler outlet flange.
- Attach hoist to lifting eye, remove center bolts of three isolation mounts, lift assembly away.
Tools required
- Hoist Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan HDKC →, Cummins/Onan HDKCA →, Cummins/Onan HDKCB →
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.