Farmall A governor

grandpa Love

Well-known Member
What's the possibility that this accounts for 99% of my throttle response issues? Parts have been ordered from YT.
cvphoto7196.jpg


cvphoto7197.jpg
 
Can't tell by your picture, is the ball thrust bearing "bad"?

Just remember, the governor spring tries to pull the throttle butterfly open, and centrifugal force acting on the weights "fights" the spring and holds back engine speed.

When the forces are equal at a given setting of the throttle lever, that is the engine speed the governor will maintain, within reason.

A broken spring means that speed won't rise above idle, MOST other governor problems will result in "overspeeding", "poor response" is typically caused by the mechanism being "sticky"

Be sure that the weights can move freely and that the "fingers" on the weights and the "fingers" on the "fork" are smoothly radiused, and don't have a noticeable "flat spot". If they DO, that will affect governor response.

Also, be sure you assemble the spacer, the two bearing races, and the bearing itself correctly (25 and 26).

Check the condition of the spring (26) inside the hollow front end of the governor shaft and be sure the "governor shaft bumper pin" (30) is in place.

Also check the condition of the "governor bumper spring" (27) partially inside the "governor bumper spring body" (28).

<img src = "https://i.imgur.com/nm9r0jI.jpg">
 
Number 16 shaft and bushings or brgs. can stick from that gooey stuff and the number 14 shaft and housing can wear a bunch.
 
Bob, thanks for the advice. Bearing is missing several balls. New one ordered. Also the big spring in cover has been ordered. How does the oil and sludge get in there? Should I spray some lube on everything before I put it back together?
 
Wash it out good. I pre lube the parts when I reassemble. You should replace the races for the bearing also, I believe they come with the bearing.

Dave
 
(quoted from post at 09:27:40 03/03/20) Bob, thanks for the advice. Bearing is missing several balls. New one ordered. Also the big spring in cover has been ordered. How does the oil and sludge get in there? Should I spray some lube on everything before I put it back together?

"How does the oil and sludge get in there?"

The governor is "splash oiled" by oil carried up by the timing gears.

Water vapor from combustion byproducts that sneak past the rings like to "hang out" in the governor (I suppose it's one of the cooler-running parts of the engine and it condenses there) and makes the sludgy mess you see.

Certain later versions of that engine design had a line leading from the governor housing to the intake air plumbing ahead of the carburetor to vent that area, a sort of simple PCV system.

When assembling, I'd use a little wheel being grease on the ball bearing and drizzle a little engine oil over the parts in the governor just before bolting it back in place.
 

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