Just checking, boss said if there was backpressure causing the cyl to open you could confirm by cracking loose the line. Idle = no call for a or b to open.
I cracked the fittings at the cylinders at device 2 and found there is pressure at one side. at idle should this be or no ? Also followed the drain line back to tank and it's a long distance, plus connects to other tank lines converging and going back to tank. at one point it takes a 90 and goes...
hydromech- leakage thru the #2 valve...for sure because tools are falling out of the arm that is supposed to be locked when a or b are supposed to be turned off (cylinder retracts when pressure off ). I could hook up a gage but i know there would be some pressure. Hydtools- adding a check to...
Please have a look at this circuit and see if you can give me some advice. The device labeled 2 is the one in question. This is a valve supplying fluid to 2 small cylinders. cylinders extend and allow fingers to locate on a machine tool holder. When valve is off cylinder retracts and locks onto...
Just making an update to this thread. I did remove the manifold the checkvalve is mounted to and all piping connects to. The checkvalve drain line is correct to drawing and seemed good. Shutting off system now works fine most of the time. Have no idea how condition improved but is not fixed for...
Thanks for your replies. I am not at a point yet to do any digging on the system. The response I am getting from engineering is that this is a issue they don't see very often. They do say reversing the pump is not good. This is a system that is on a number of our machines and works fine. I have...
I will check the pressure. Last time a tank was low the up stroke pressure was really fluctuating ( not able to assist heavy demand ). One procedure I got on this job was how to set up the pressure reducing valve. Turn in the valve to almost closed, then open till you see pressure drop, then...
I think the only thing that improved was the check valve is closing everytime but there is still issues. it drops to zero first which is unusual. the inrush sound is even of concern to the customer as it is so loud. I see where the check / pressure reducing valve drain seem to be tied into each...
Regarding the gage, it reads in Mpa's, Help me with the x y are you looking at the 689 jpeg which shows dr 2 coming out on both sides of the manifold? Really appreciate the help.
Thanks Hydromech, I don't think the drain is tied into the pressure / return lines going out to the Y cable carrier. attached pic which shows the check valve mounting surface.
