W4, H governor malfunction

Broot · Dec 30, 2009

I'm working on a Super W4 that hasn't run in years. The last time it was used, it suddenly went wide open beyond top governed speed. Long story shortened, I got it running but governor doesn't work. Can't find anything seized or broken.
I bring in my H and pull the cover off the governor, unhooked the throttle rod so I can manipulate the throttle lever. Can see nothing different between the two governors.
The next problem is that now my H governor isn't working properly. At half throttle position, it snaps from idle to full throttle and won't idle down again.
I'm completely stumped. I didn't unhook anything besides the throttle rod from the hand lever. I didn't adjust anything. I just looked and checked components for freedom of movement
Anyone have any idea what the heck I'm up against here?

Theman · Dec 31, 2009

When an engine won't slow down, the flyweights aren't being allowed to do their job. Freedom of movement is the key. Make sure the weight pivots, thrust bearing, thrust sleeve, cross shaft, and yoke operate smoothly. Also, another area to check is the tube between the governor and the carburetor. My '47 H would surge at an idle sometime and that tube was so full of dirt and crusty scale that the shaft was hard to turn. It seemed that the butterfly (throttle) shaft had worn and the resulting vacuum sucked dust and dirt into that area. There is a felt washer that is supposed to seal this off and it was long gone.

I'm not sure what happened to your H, but the above comment still applies. Good luck.

W4, H governor malfunction

Broot

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Theman

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