Sundstrand Hydrogear leak and ATF?

[c175inMA 8]

Hi all, I have a Bronco 14 which sat for a while. I got it running and within the first minute of driving the transmission started leaking fluid. It leaked a steady stream of fluid. The leak appears to be from where the speed control goes into the pump. Does anyone know where I can get parts? I believe there are a couple of o-rings that need to be replaced. Anyone done this before? The other thing i noticed when i removed the transmission and drained the fluid was that it had what appears to be ATF in it, not oil. Would running ATF in the transmission hurt it? Should i clean it out and use oil or continue with ATF? If i clean it out how would be the best way to do it? I also need to replace an axle seal so what i really need is a parts supplier right now, but any input would be great. I believe that transmission model is 90-2046. Thank you all in advance. Paul

[Martin 2,133]

much has been written and discussed on this subject......

 

heres some reading, im sure you will find all the info you need...

 

 

[c175inMA 8]

Thank you for those links. I did do a search but i guess i didn't look hard enough. Does anyone know about the automatic transmission fluid? If it's not hurting anything i'd just leave it and not bother cleaning out the whole system.

[c175inMA 8]

Alright i did some more research and found out that either will work. Thanks for your help. 

[Martin 2,133]

yes, either atf or oil will work, just don't mix the two of them. if you have atf in there now i would top it off with that. unless you want to flush the whole system stick with the atf......

[wh79d160 52]

I believe the speed control seal is actually a regular seal. I got numbers off of mine & got one from my bearing supplier.

[oaktown1987 82]

those do take atf

[Kevbo 80]

In my 1075 I have a Sundstrand transmission as well. Mine too came with ATF. I recommend draining the fluid, replacing the filter, and replace with Mobil 1 Synthetic ATF. After you get the leaks fixed of course!

 

 

See thread:

Edited April 21, 2013 by Kevbo