No hydraulics

[guybo211]

Recently while mowing my steering started jerking as if I was low on fluid.
I stopped the machine, checked oil (ok) but then after restarting had no hydraulics except for brakes (1982 2040). Since then I have drained old hyd oil, replaced the hyd filter and sump screen but to no avail. Still no hydrtaulics. Main pump shaft is turning and there are no unusual noises and no hot spots to indicate an internal leak. Ideas?

 

[ctlguy]

stroke control valve ?

 

[guybo211]

Where is it located and how do I troubleshoot it?

 

[ctlguy]

for the most part of testing on these closed center systems you will need to tap into the hyd system with a gauge when testing for standby pressure, adjusting the stroke control valve, etc. You could always pull the valve and see if there is something keeping it from moving. Stroke control valve lives on the bottom right hand side of the pump. I would access jdparts and look at the parts diagram. Have your s/n handy lots of options, and if you plan on doing a lot of this work on the unit yourself I would bite the bullet and purchase a tech manual probably runs a couple hundred but a very detailed book. Again have your s/n handy. Good luck.

 

[guybo211]

Thanks for your time. Time for me to call in the pros, I guess.

 

[guybo211]

Thanks for your time. Time for me to call in the pros, I guess.

 

[tjnoonanndt]

looks like no oil feed from trany pump either broken oil ring or gasket sounds like big surgery. when hyd stops take of hose top of hy pump you should have oil if not its supply from trany pump

 

[guybo211]

It was indeed the tranny pump--stripped. Now my bank acct is also.