Remove the two quick connect hoses for the grapple, then try to reconnect...no-go. Pressure remains in (apparently) the grapple side.
If so there's no time for thermal expansion / contraction in the grapple lines therefore another potential answer is that there is still residual pressure in the lines because he isn't relieving it like he expects he is.The grapple fully closed, power off, actuate the hydraulic lever to what I thought would relieve hydraulic pressure.
Remove the two quick connect hoses for the grapple, then try to reconnect
Me too.
Or is it me neither.
I always get those confused.
Flatface couplers are worse because they are designed to not leak during connection.
Well, as a newbie to stuff like this, I too have this question/problem. I recently hooked up some hydraulic lines for my grapple (everything is new to me, even the tractor) and when I disconnected the grapple I went to connect the two lines on the grapple side together and NO GO! Flat-face connectors, 1/2". I'm not exactly superman, but I'm no weakling either, but no way was I able to push the two connectors together. If I'm reading correctly, one should do this after things are warm: I was doing this cold- tractor and all. Learned something new today!:thumbsup:
What you did was release the couplers with a "load". To prevent that you should shut the tractor off, then cycle the grapple controls to release any pressure, then disconnect.
Most common problem that is being discussed here is pressure that builds in the grapple system after it has been disconnected. Such as from heat expansion that occurs because of uncoupling during cool ambient temps then trying to recouple during warm ambient temps.
I only recall operating the valve lever, and dropping the lid (which had been parked open). Didn't seem like an issue disconnecting the hoses, didn't feel like there was much pressure.