Cummins/Onan — Mechanical Latch Service
Repair & overhaul · Mechanical latch (Normal side)
From a Cummins/Onan service manual — check it applies to your exact model before use.
Browse Cummins/Onan generators & specs →
Before you start
- The trip coil cannot be checked with an ohmmeter due to a rectifier circuit inside the sealed coil assembly.
Procedure
- Push the orange release button on top of the latch forward to release the contactor.
- If an ohmmeter check indicates a faulty contact or the trip coil does not function, replace the latch.
- Lift the locking tab on the mechanical latch and slide it out from the contactor.
- Slide the new mechanical latch onto the contactor assembly until it locks 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.
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.