Cummins/Onan — Arc Chamber Removal and Installation (100-260 Ampere)
Repair & overhaul
From a Cummins/Onan service manual covering: LT 100, LT 150, LT 200, LT 260, LT 30, LT 60. Check it applies to your exact model before use.
Applies to: Cummins/Onan TGHAA
Procedure
- Push down on the quarter-turn fasteners with a screwdriver and rotate 90° in either direction to remove the arc chambers.
- To reinstall, push down on the fasteners and rotate 90° in either direction.
- Release the fastener and check for a secure fit.
Tools required
- screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan TGHAA →
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.