Cummins/Onan — Governor Actuator Installation
Repair & overhaul
From a Cummins/Onan service manual covering: C13 N6H, C13N6H, C17 N6H, C17N6H, C20 N6, C20N6H, RS13A. Check it applies to your exact model before use.
Applies to: Cummins/Onan C13 N6H, Cummins/Onan C17 N6H, Cummins/Onan C20 N6, Cummins/Onan RS13A
Procedure
- Attach the governor actuator and mounting bolts to the actuator bracket.
- Assemble the governor linkage with the components bottomed out (upper jam nut, ball socket, lower jam nut, pivot joint).
- Install the governor linkage assembly in the generator set.
- Increase the length of the linkage until the gap between the throttle stop screw and the throttle shaft bracket is 0.25-0.30 mm (0.001 in).
- Verify that the mixer arm can be moved to the fully open position with the linkage installed.
- Tighten the jam nuts against the base of the ball socket and the base of the pivot joint.
- Connect the electrical leads from the wiring harness to the governor actuator. Install the control access panel.
- Connect the generator set battery and reset the display settings. Turn on AC power to the accessories.
- Test run the generator set for 5 minutes with no load. Close the generator set breaker.
Tools required
- General mechanical tools
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Throttle stop screw to throttle shaft bracket gap: 0.25-0.30 mm (0.001 in)
Full service-parts list: Cummins/Onan C20 N6 →
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.