Cummins/Onan — Contactor Closing Coil and Trip Coil Replacement (100-260 Ampere)
Repair & overhaul · Contactor coil assembly
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
Before you start
- The closing coil and trip coil cannot be checked with an ohmmeter due to a rectifier circuit contained inside the sealed coil assembly.
Procedure
- Remove the transfer switch mounting bolts and move the assembly out until clearance for removing the coil assembly is obtained.
- Press in on the orange button on the side of the coil assembly and slide the assembly out of the contactor assembly.
- Reinstall by holding in the orange button while inserting the coil assembly into the contactor assembly.
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.