I've gotten (and ignored) this question for years. How to find an internal hydraulic piston leak without disassembling the ram.
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You don't need a gauge just remove the pressure line on one end and fire up the machine and pressurize the other end when the cylinder is fully extended. If fluid is bypassing it's gonna leak out the end with the hose removed. Easy.
In my grader all functions are work great but when I use blad up down blad slow up and down what was the problem
you do not need to block of the piston end…its better not to block it at all!!!!!!!!!!!!!!
I know I’m late to the party but you can’t always remove the blind end hose and cap the fitting if you raise your implement..
Took longer to realise than I’d like to admit, that the force was applied via the vice, rather than the other way round.
Have you ever heard of a Cylinder Gland Nut unscrewing itself over time and if so what might you suggest would be a potential cause?
Thanks. More stuff to think about
Does oil compress? Just had to bust your balls man.
"Old Chimera" – that was my nickname back in high school.
Worked construction for a very short time… always wondered about the magic that was going on inside those hydraulic cylinders… thanks
Really enjoyed this video, heaps of good info for us newbies. Would have loved to see you go to a white board and make some sketches and throw in some figures from a pump so that you know what size cylinder you need, rods, pistons etc. Can you buy the pistons from a hydraulic supply along with the pipe, seals and wear rings etc. Many thanks and all the best for 2019
Hmm. Surely a quicker method would be to open up the return end and put pressure on the ram whilst held tight. Leakage would immediately indicate a leaking seal. However in my experience on rams most leakage is across the counterbalance valves.
A boot?
Hey AvE thought I would mention that in my experience of bad piston seals i can normally feel heat on the outside of the cylinder where that oil is rushing past a bad piston seal. If i feel that i know its in the cylinder and not a valve or another leak.
Keep your hydraulic cylinder in a vice!
I have a pair of hydraulic cylinders on my ladder rack, their purpose is to bring the ladder down when you push up on a lever, however im having the problem that they are stiff, how do I go on maintaining them so they can close and open smooth like when they were new? TIA