MF 4255 hydraulic upgrade?

[AaronK]

Bought a MF 4255 with the slope nose hood and 24 speed power shuttle. I am having issues with the power shuttle getting jumpy after running a few hours, and then the tractor shuts down with oil pressure lights coming on. Not short on motor or hydraulic oil. I read elsewhere that Massey made a kit to replace the hydraulic filter and fix this problem? Anyone know more about this kit? Love the tractor if it wasn't for this issue after running for 4 hours at a time.

 

[Phillip w]

I can't speak for mf, but some allis Chalmers models had a seal that would go bad. When this would happen it would push hydraulic oil into the transmission. The seal is about a 15 dollar part, but you had to split the tractor in two to install it. Some really season allis Chalmers mechanics figured out a way to bypass it. I don't know if you got something like this is going on, but it might be something to look into.