Cummins/Onan — Removing Generator Control Housing
Repair & overhaul
From a Cummins/Onan service manual covering: C30 D6, C33 D5, C35 D6, C38 D5. Check it applies to your exact model before use.
Applies to: Cummins/Onan C30 D6, Cummins/Onan C33 D5, Cummins/Onan C35 D6, Cummins/Onan C38 D5
Before you start
- Generator is heavy; use assistant and hoist of sufficient capacity.
Procedure
- Disconnect line cables and conduit; mark each cable.
- Disconnect remote control wiring and conduit; mark each wire.
- Disconnect engine wiring harness connections in control and output boxes.
- Disconnect generator control leads (winding taps) in output box.
- Disconnect cables to mounted line circuit breaker if present.
- Attach hoist to output box, loosen mounting bolts, remove box.
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 C35 D6 →
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.