Cummins/Onan — Governor Cup Installation
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Procedure
- Remove snap ring from camshaft center pin; remove governor cup.
- Protect flyballs from damage and loss.
- Inspect flyballs for grooves or flat spots; ball spacer for wear; race surface for grooves or roughness.
- Tilt engine so gear is up; place flyballs equally spaced.
- Install cup and snap ring on center pin.
- Camshaft center pin extends out 3/4 inch from end of camshaft.
- Hold cup against flyballs when measuring; travel distance should be 7/32 inch.
- If less, remove center pin and press new pin in required amount; otherwise grind hub of cup as required.
Specs & values
- Governor cup travel distance 7/32 inch
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.