[AT] Allis question

[Gilbert Schwartz]

Brad; Sounds like you may have a lost or broken surge spring. There is 
supposed to be one that hooks to the rod that runs from the governor to the 
carb. The spring hooks to that rod and also to the block drain. It keeps the 
governor from reacting too quickly. Some times one of the hooks will  rust 
and break off. You'll usually find the broken spring swinging loosely on the 
rod OR laying on the floor under the tractor, depending on which hook broke 
off. (usually the drain end rusts off first) If that fix don't get it, I'm 
guessing the problem is inside the governor. I'd check the weights in there 
next. It's not a big deal. Gil
----- Original Message ----- 
From: "Gunnells, Bradley R" <brad-gunnells at uiowa.edu>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Sunday, March 12, 2006 9:01 PM
Subject: [AT] Allis question


I thougt I'd change things up with a tractor related question.

Today I noticed something different about my 1945 Allis WC. I started it up 
and let it run (warm up) for a few minutes. As I was backing out of the pole 
barn (about 1/2 throttle) it kind of lurched and sped up. I throttled it 
down and continuted to back out.

I put it in forward gear and took off, I reached down to open the throttle 
and it opened up and reved much higher at full throttle than normal. I 
hooked on to the trailer and continued to use it but careful not to throttle 
it up too much. It would rev much higher than normal if I opened it up. It 
would idle down when the throttle was closed without any problem.

Does this sound like a governor spring? I was looking at the IT shop manual 
I have and there appears to be only one. The repair/overhaul directions say 
to pull it out with the mag and it's mount. But this would appear to leave 
the spring and throttle/carb shafts in the remaining housing. There is a 
cover that can be removed to access (or at least see) the spring.

Before I begin tearing things apart I thought I'd see if anyone has had a 
similar happening. Or am I even on the right track. If I do have a broken 
spring (or other part) where are some good places to find them. Is the AGCO 
dealer going to have them (is this a common part)? I use this tractor a fair 
bit (it's my favorite) so I'd like to limit the down time.

Thanks for any suggestions.
Brad




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