Posted by Allan In NE on July 23, 2009 at 06:46:10 from (148.78.100.118):
In Reply to: Re: 656 Hydro Problems posted by theponyroper on July 23, 2009 at 06:20:07:
Pard,
This is just an uneducated guess. I'm an old man but spent my life working on hydraulics and have been thru what you're facing a few times.
We've got one of two or three possibilities going on here. The problem "could be" up at the control head, but I kind of doubt it. However, there is a procedure to check which is giving you the headache, be it the control head or the transmission itself.
Better guess tho:
Either there is a crack in one of the small feed lines at the forward pressure regulator or forward check valve down in the transmission
OR
And more common, they normally just beat the heck out of those pressure regulator and directional check valves......especially, in forward range. Further, the "fails when hot" thing sure points at the valves.
My email is open. If ya want, shoot me an email and I'll send you the pictures of the repair.
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