Ford 601 leaking hydraulic fluid in bell housing

dkiger

New User
Just picked up this 601, the previous owner thought for sure the hydraulic fluid in bell housing was coming from the pump (which didnt make since to me since it runs off the cam gear) and he had the pump rebuilt. I installed the rebuilt pump and fired the tractor up only to find (as i suspected) it was still leaking hydraulic fluid in bell housing (more like pouring) and it pour out the timing hole. I know there are two O-ring that go from the pipe to the transmission but logic tells me if those where leaking wouldnt it leak on the outside rather than on the inside of the transmission housing or are those O-rings far enough inside the transmission housing enough to leak there? Or do you suspect i need to split the tractor and go from there. I am not familiar on how the hydro pipes through the transmission so any information you have would be great. The service manual I have shows the diagram on how it works but not enough detail to what the pipes look like.
 
well i am assuming then if its pouring out of the input shaft seal then there must be a leak in one of the tubes filling up the transmission?
I should add that the 3 point is non-functional as well right now which i am assuming is related to the leak.
 

Makes sense. Input shaft seal is bad as well, or it wouldn't leak. Input shaft seals can also leak at normal transmission fluid levels, although likely not as profusely.

Have you pulled the hydraulic dipstick and/or transmission oil level plug to ascertain fluid levels?
 
There is a short section of the hydraulic pressure tube inside the bell housing and that pipe has to seal between the cast and the pipe at the joint where the pump manifold attaches.
 
well that must be where the leak is then cause the transmission fluid level is below the side plug meaning the hydraulic fluid cant be leaking into it else it would have been completely full.

Sounds like ill have to split the tractor.
 
The hyd leak in that area could be a pin hole or crack anywhere in the pressure line or maybe you could get luck by putting an o ring tight around the pressure tube just before the hydraulic manifold. That manifold will come of without splitting the tractor
 

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