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Allis Chamlers D17 Govenor

B

Blackseal

New User
I have a Allis Chamlers D17 1965 vintage
When I start the engine it will run for a short time and then go to fast idol. No matter where I place the throttle it will run at high idol.
I can move the carburetor linkage eaisly with a very light touch and slow it down, when I let it go it will very slowly return to high idol.
What is going on
 
The "governor" is a balancing act between a spring and centrifugal force acting on the governor weights.
Your "throttle" lever is really a governor control. When you "open" the throttle, you're putting more tension on the spring, opening the throttle plate in the carb. The increased engine speed acts on the weights, and you get a higher "governed" speed.
If you get no speed increase, the spring is likely broken.
If you can't reach maximum recommended speed, it could be adjustment, or a weak spring.
In your case, the weights are not reacting properly. Your governor needs attention. The weights are soft metal and subject to wear where they pivot. They can break. If a piece of that soft metal gets in the gear train, it will grind off, get in the oil, and do damage.
 
First check to see if all the carborater external springs are there, and are the correct ones. Then try the bend the governor arm wider, or narrower trick, as described in the manual. If all else fails, pull the governor, and look for wear in the shaft. on the weights etc.
 
broken governor weights have replaced them twice on mine offer the years they say they break from running to high of rpms
 
Is it possible to inspect and change the weights without removing the governor?
This tractor has power steering and if I read correctly, I would have to split the tractor and remove the timing gear cover etc.
Could get myself into a real jam here if I try to do this myself.
It may have to go to the garage to be repaired.
 
1965 vintage with power steering pump on the dist/gov drive? I would have thought by then it would have the belt drive pump.
It's been so long since I've been into one I can't remember. Seems to me between the gov. cover and the dist. drive you could get at it all.
 
mine is a 63 took radiator off and went thru the front cover of governor left it on tractor put in new weights pins clips and bushing you can try to mark timing gears but you will probably have to re time it mine broke used long pinch grabber to fish pieces out of fly wheel
 
You are right, the power steering pump is belt driven, and I believe that if the radiator were removed the weights and spring could be replaced.
You guys are very helpful
 
If i remember right I pulled the distributor and the gov weights came out with it. Replaced the weights. This was on a 1958 D17 and it has been 35 years ago.
 
I had the same problem with mine a Series III after I stored it this last winter. It ran fine when I put it away but when I got it out in May it was doing what you are descibing. There is a set screw on the linkage from the throttle that runs to the governer behind the side panel. Mine must have came loose and allowed the linkage to shift. I held the governer arm to the idle position and and adjusted the linkage and it has been running fine ever since. I was just about to tear into the weights when I noticed the slop in the linkage to the governer. Hope your fix is as simple as mine.
 
SO, I MET A FELLOW WHO OWNS A SALVAGE YARD IN RED BUD ILL, IT IS CALLED NORTHSIDE SALVAGE.
HE AND HIS FATHER FARM AND WORK ON ONLY ALLIS CHAMLERS TRACTORS. HE HAD 39 TRACTORS WHEN I WENT TO VIST ON SATURDAY
I BOUGHT A GEAR AND GOVERNOR FLY WEIGHT ASSEMBLY FROM HIM AND HE WAS KIND ENOUGH TO SHOW ME THE R & R ON A D17 HE HAD THERE. ACTUALLY VERY SIMPLE, SET THE DISTRIBUTOR AT #1 TOP CENTER, REMOVE THE THREE BOLTS AND REMOVE THE GOVERNOR GEAR AND FLYWEIGHTS AND THE DISTRIBUTOR ALL AT ONCE. I WAS ABLE TO REMOVE THE BROKEN FLYWEIGHTS WITH A COAT HANGAR, INSTALLED THE FLYWEIGHT ASSEMBLY ON THE DISTRIBUTOR SHAFT AND REINSTALLED IN THE ENGINE BLOCK. STARTED ON THE FIRST REVOLUTIOPN AND RUNS FINE. I HAD VISIONS OF HAVING TO SPLIT THE TRACTOR
 
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