Cummins/Onan — Mechanical Latch Replacement (30-60 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
Before you start
- The trip coil cannot be checked with an ohmmeter due to a rectifier circuit contained inside the sealed coil assembly.
Procedure
- Remove the mechanical latch by lifting the locking tab and sliding the mechanical latch out.
- Install the mechanical latch by sliding it into the contactor assembly; it should lock in place.
- Transfer the leads from the old mechanical latch to the new one.
Tools required
- ohmmeter 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.