Hydraulic Issues

[Buck Thorn]

Just purchased B7200 with loader. Tractor runs great, pops right off at start. Everything functions properly, until. . .
Once the machine warms up I lose hydraulic pressure to loader and 3-point hitch. If i turn the machine off and let it cool, I get all functions back, until. . . same thing. I have been told that perhaps the hydraulic fluid is too light? Thoughts on that or other possibilities?

 

[dragfan66]

I am in for answers myself, having a similar problem on a B7500.
Loader works, but the hitch quit working during a project.

 

[GreensvilleJay]

low on oil ?
cooling rad plugged ?

 

[Springer]

Pull the filler plug and check if your fluid is real foamy.
I had a "tech" service my BX and put a auto filter in place of the hydralic filter.
An auto oil filter expects about 60 psi max. Hydralic pressures in tractors ~1850 psi. After about a week, my filter collapsed and my pressure did all kinds of funny things.