CAT 22 governor problem

I've never owned or worked on a 22 but from your pictures it looks like there are 4 bolts on the front side of the timing gear housing that could go through to the governor housing. Could be interesting trying to reassemble and get the magneto drive timed right.

Anybody else ever worked on a 22 governor???

hello Ray .you can remove the breather on top to see inside ,if spring is broken you can remove the tube above the mag ,lets you do one end of the spring and then the other end thougth the beather ,bruce oz

Thanks, guys. I took off the breather assembly and control rod housing and confirmed that the spring was broken. I found that it was a help to remove the hood so I could see down into the governor case. I went to Lowe's and found a spring that will probably work fine. It was the right length and maybe a little stiffer, but it will probably be OK. While I have it apart I will clean it up, make a new gaiter, make new gaskets, spray some paint, and reassemble it. I don't think I will need to do anything to the magneto as I do not need to get into the bottom end of the governor. I'll try to take some photos of the guts of the governor and post them in case someone else has a similar problem. I must have looked pretty funny trying to operate the dozer with a broken governor. I tied a string to the governor throttle linkage and operated it with one hand. With my other hand I operated the dozer blade control, and with my other hands I operated the steering clutches and gear shift. I must have had four hands to make it all work together. It wasn't pretty, but I got the job done. Ray

A stiffer spring will make the engine run faster,don't wind it up to tight.

Thanks, guys. I took off the breather assembly and control rod housing and confirmed that the spring was broken. I found that it was a help to remove the hood so I could see down into the governor case. I went to Lowe's and found a spring that will probably work fine. It was the right length and maybe a little stiffer, but it will probably be OK. While I have it apart I will clean it up, make a new gaiter, make new gaskets, spray some paint, and reassemble it. I don't think I will need to do anything to the magneto as I do not need to get into the bottom end of the governor. I'll try to take some photos of the guts of the governor and post them in case someone else has a similar problem. I must have looked pretty funny trying to operate the dozer with a broken governor. I tied a string to the governor throttle linkage and operated it with one hand. With my other hand I operated the dozer blade control, and with my other hands I operated the steering clutches and gear shift. I must have had four hands to make it all work together. It wasn't pretty, but I got the job done. Ray

Hey, a SKILLED operator would hold the throttle string in his teeth.😆

It's tough to chew and spit with a string held between my teeth. 😆

OK, here is a summary of my experience in repairing the governor on my CAT 22, 2F5209. I'll refer to the photos attached. Photo 0047 shows the governor before I took it apart. My guess was that the spring was broken, That turned out to be the case. Photo 254 shows the governor with the breather and throttle control rod housing removed. Photo 255 shows the governor housing seen from the top. You can see the linkage where the business end of the spring connects. It helps if you remove the hood so you can see down into the governor. Photo 256 shows a bolt that I found riding loosely on top of the cam on the accessory shaft. Does anyone know what purpose this bolt serves? I don't see any purpose. Perhaps there was something other than a bolt originally and this is a Vermont mechanic's substitute? I found that the spring was in fact broken. I we3nt to my local True Value hardware store and found a spring that was close in length and stiffness. Photo 248 shows the original spring, and the replacement spring I used. I measured the spring constant and found the spring from True Value to be less that 5% stiffer. Close enough. I disassembled the components and cleaned and painted them. See photo 250 of all the parts before assembly. Photo 252 shows the two sub-assemblies after assembly. I installed the control rod housing first (photo 25😎 and attached the spring to the linkage in the governor housing (see photo 260). Finally, I installed the breather, and connected the throttle control rod linkage (photo 263). I started the CAT and pushed some dirt around. Works great. I cannot see any difference in engine speed. BTW, I noticed that the filter element in the breather is in pretty bad shape. Does anyone know where I can find some of that material? Ray

Hi Ray,
that stray bolt may be a substitute fuel pump push rod. The bolt head in pic 260, I guess is the location of the bolt pictured in pic 256 you are refering to. Sometimes the fuel pump linkage and the end of the pushrod wears and a longer pushrod is needed to get the pump to stroke enough--old V8 side valve Fords' suffered from this problem. Last one I restored I made an adjustable pushrod for it.
I guess if it works and has done before I would re-use it, a kind of suck it and see deal.
Cheers,
Eddie B.