Posted by pete 23 on November 03, 2009 at 11:06:09 from (173.87.147.73):
In Reply to: farmall 350 hyd posted by robison on November 02, 2009 at 21:15:17:
With out knowing history of problem it makes it difficut to diagnose. Like previous poster said, make sure the single to double action control levers are turned properly. It is very common for them to have a bent or broken roll pin which is the stop. When this happens valve will turn too far and dump oil circuit feeding the orfice in regulator valve assembly. Also, if pin has been bent or broken previously some one may have turned valve far enough to bend the internal link to the point that even when lined up correctly on the outside it still uncovers land inside valve. Saw this happen a few times over the years.Reason that happens is because they rust tight and when they let go, bang, too far. If tractor has power steering , does it work correctly. Has it been removed. Has some one installed flow divider spool backwards. Is regulator valve piston in correctly and or pin broke off or internal spring broken. Lot of different things that have to be ruled out. Most likely, problem is in the changing from double to single action if you assembled regulator valve body correctly.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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