The most clarifying explanation on the topic i’ve heard, thank you sir!
@shhs61272 ай бұрын
Helou i have mini digger libra 216S.. it loses presure slowly... When i lift boom it wil came to ground slowly when engine is running or not.. What do you think problem is ??? Thanks..
@onazram14 ай бұрын
Brilliant and simple explanation..
@hunningtonmissango38705 ай бұрын
Nice logic 🎉
@zabidi596 ай бұрын
Do like to share this informative video please.
@StoesA7 ай бұрын
Well explained!
@mahamilawal18877 ай бұрын
Great video , i would like to know , Can i deadhang the pump from the system if from the pump discharge it goes not only to a relief valve but a control block that contains a relief valve, a main spool etc, thanks.
@award7959 ай бұрын
Thank you very much for recording this video. I’ve found very few others that are actually helpful. I have a bobcat 863 that the auxiliary hydraulics lose pressure as the machine warms up. Any specific recommendations for this problem? Greatly appreciate your time.
@shhs61272 ай бұрын
Did you find answer to your problem, a have similar .. lose power - pressure slowly... If engine is running or not... Boom will come to ground slowly...
@Clapsonchoochoo9 ай бұрын
Thanks for the video
@bipl898911 ай бұрын
There is "no difference". You cannot seperate pressure and flow. Each one is the result of the other. A pump adds energy into the system. Hydraulic Energy is pressure x flow. How much of each one results is determined by how efficiently a pump can convert Energy to the pressure component of Energy, ie potential energy, and flow energy, ie kinetic energy. The pump's efficiency is strongly related to how much flow is running through it at any given time. At BEP, you get the best efficiency and the highest value of pressure x flow for the electric energy being supplied to the pump. At off BEP flows, low flows produce high pressures and high flows produce low pressures. Adding pipe and equipment into the system changes the resistance to flow and that causes the pump to change its efficiency, which causes a new Pressure x Flow output combination from the pump. You cannot seperate pressure, from flow, or resistance. Look at the hydraulic and electrical analogy. You will see that you are trying to separate amps and resistor and voltage. Electrical engineers do not ever try to separate them. Why bother, the result is the result of all three. Set any two Volts, Amps and you know the last, Ohms, one. Same for pressure, flow and resistance from pipe/valve/equipment. BTW, electrical valves are called transistors.
@jarvisconrad2348 Жыл бұрын
Wow good lecture.....if i only had lecturers of this tone i could be the next Elon.
@Happy_Harry Жыл бұрын
Great video, but I don't believe my pump has a compensator. I have a Roper Log Splitter that won't split anymore. The cylinder goes out, but will not push into the wood anymore. No leaks. So either its the pump, the actuator valve or the cylinder? Normally the actuator valve handle would self return to the neutral position when the cylinder fully retracts. It will not do that anymore either. When trying to push into the wood, the engine bogs down. It normally would bog down if it encountered a very hard piece of wood or at the end of cylinder stroke. Any thoughts or help would be much appreciated. I still have a lot of wood to split before winter.
@JackWeeks Жыл бұрын
@@Happy_Harry Definitely start by removing the directional valve, taking it apart and cleaning everything. Look for a built in relief valve and see if it is stuck open. Carburetor cleaner is good for cleaning these valves, just be sure to remove the cleaner with new hydraulic oil afterward. Good luck to you!
@awarahajilatif3331 Жыл бұрын
thanks
@user-kv6zd2re3c Жыл бұрын
If you have no pressure its meaning that all pistons inside destroyed 🤣🤣🤣🤣, not just compensator dirty))
@lehlohonoloshaunmokone8818 Жыл бұрын
7 mins to explain one of the most confusing(at least I thought it was) concepts in the world. Thank you.
@JackWeeks Жыл бұрын
Thank you very much for your kind comment!
@GulabKhan-tp3qy Жыл бұрын
Good morning
@oduahikenna4026 Жыл бұрын
My accumulator is gushing out oil from the charging valve. What does that mean?
@JackWeeks Жыл бұрын
What type of accumulator do you have - bladder or piston? If it is a bladder accumulator, the bladder must be ruptured. If it is a piston accumulator, your piston seals may need replacing.
@oduahikenna4026 Жыл бұрын
Thank you sir for the video.
@martinbyrne715 Жыл бұрын
Knob turners name, " not me". Awesome.😂😂
@michaelkpeli4885 Жыл бұрын
I would like join
@ATPLTKI Жыл бұрын
Clear, concise, brilliant. "Who changed that?" "Not Me" So true.
@JackWeeks Жыл бұрын
Thank you very much for your kind comment!
@ATPLTKI Жыл бұрын
@@JackWeeks I had an argument about this, well, discussion really, with a guy who was supposed to be the supervisor. He didn't get that pumps that "do" high pressure, are simply capable of producing flow against a higher resistance than a low-pressure pump.
@JackWeeks Жыл бұрын
@@ATPLTKI Well, I'm glad you found it helpful!
@anythingunderthesun5586 Жыл бұрын
I need to save this video
@JackWeeks Жыл бұрын
So glad you found it helpful!
@brianb5779 Жыл бұрын
Jack i know this is a big ask so i understand if your not able. I have a hydraulic system (for you extremely basic) but would love to understand how the whole system works, not only for troubleshooting but also just to understand how it works. Would i be able to email you pictures/info and you could explain the operation. Again i know its a big ask so i understand if your unable but it never hurts to ask and i love understanding how a system actually works. Thanks in advance whichever your response is, im hooked on your teaching videos. Brian
@JackWeeks Жыл бұрын
Thank you for your kind comments! Yes, I would be glad to help. Email me any time at [email protected] (GPM Hydraulic Consulting is no longer in business, so I am on my own now).
@brianb5779 Жыл бұрын
@Jack Weeks Jack you made my day more than you know. So i give as much info as possible i will email you tomorrow so i can get pictures together and as much info to give you as possible to try and save you as much back and forth as possible. I will include in the subject line pretty obvious its coming from me. You have me excited like a little kid Jack so thank you so much.
@danlarson8154 Жыл бұрын
Quick question. So if you would open the flow control after the system checks out would the pressure now drop because of the load? My system reads 2600 psi with no load but when hooked up to the cylinder for an 4 post auto lift it falls to 800 psi. Cylinder has been rebuilt so that isn’t the cause. Just wondering why the lift seems to be running slower. Thank you for your help. Dan
@JackWeeks Жыл бұрын
Hi Dan. Thanks for your question. Yes, the pressure would drop once you open the flow control, assuming there are no other flow controls in the system. If the only resistance downstream is the load, then the pressure would drop to load pressure. However, if there are any flow controls limiting speed, the pressure would stay at the pump compensator setting since the stroke of the pump would be limited by the flow controls on the actuator. Hope this helps!
@danlarson8154 Жыл бұрын
@@JackWeeks Thank you sir for your help.
@houndsmanone4563 Жыл бұрын
Thanks, enjoyed the humor. 👍🏽🤠 4/10/23
@peter_castle Жыл бұрын
You are awesome sir!
@PABLOJUNCTIONDEEP Жыл бұрын
🇿🇦 Thanks for the lesson Jack
@TrailMaker2 Жыл бұрын
hello, I have the problem with my pump, every time I turn it on, it cant build up pressure but when I open the valve all the way open after 10 seconds it grabs hard and after that it works fine, like nothing ever happen. Can you help me solve the problem? I had this problem before I put new oil and new oil filter.
@Brian_yeah_that_brian_Strang Жыл бұрын
Calm down son you’re doing fine
@boarderlinesk8media433 Жыл бұрын
I’ve got a 755 jd tractor I’m looking to buy a backhoe with a recommended psi of 300 more than my tractor says it will produce. Can I still use the attachment with 300psi less than it says it needs?
@raquelsapalaran2907 Жыл бұрын
Great tutorial, thank you for sharing your knowledge, God bless and more powers.
@JackWeeks Жыл бұрын
Thank you very much!
@eliespo6143 Жыл бұрын
So if it did go down the whole pump needs to be replaced? Please lmk
@JackWeeks Жыл бұрын
Yes, if the flow drops significantly (more than 10% on most industrial machines) when the pressure is increased to normal system pressure, the pump is bad and must be replaced.
@pnachtwey Жыл бұрын
Pumps convert electrical to hydraulic energy.
@charlesmac4356 Жыл бұрын
Sir weeks is a genius in hydraulics
@revrafferty Жыл бұрын
Excellent training. If I were in his company, he would be on my contact list.
@bobthomas702 Жыл бұрын
awesome teacher
@bucksnortbumblefuk6872 Жыл бұрын
Why didn't the pressure drop when you opened the needle valve at the end.
@JackWeeks Жыл бұрын
Thank you for your response! The pressure didn't drop because the directional valve downstream was closed. In this particular case, a closed center directional valve was used, so strictly speaking, the compensator and relief could have been set without closing the needle valve. We recommend that it be closed because so many different configurations are out there and someone may be using this video who has, for instance, a tandem center valve rather than the closed center valve in the demo system shown.
@bucksnortbumblefuk6872 Жыл бұрын
@Jack Weeks Thank you for the reply! So I have a vickers p.c pump and have it set to 1k psi. Relief is at 1300 or so. Are vickers pumps always noisy? If I dial the pump down to say 500psi it's a lot less noisy. Also, prime mover is maxed out at 50 amps when I have it set to 1000psi. Can that attribute to pump noise? 3 phase motor, data plate says 50 amps max. It's on a bagging machine, feeds product into bag, then presses it down, seals it etc. When the comp pump hits set pressure, it's maintaining set pressure so should the motor always pull x amount of amps? Thanks so much again.
@bucksnortbumblefuk6872 Жыл бұрын
@@JackWeeks I wish I had a flow meter so I could do some math to see what hp is required.
@JackWeeks Жыл бұрын
@@bucksnortbumblefuk6872 A higher pressure will indeed contribute to noise, but it shouldn't be excessive. There may be some other issue as well, such as an air leak or blockage in the suction line, or worn bearings, depending on the sound it is making. The current draw of the drive motor will not be constant even though the pressure is maintained. Current will also change based on speed and load resistance as those change.
@bucksnortbumblefuk6872 Жыл бұрын
@Jack Weeks pump is new, but guy before me was cavitating it bad as i started my repairs with fixing the inlet/supply. Several fittings loose. Also there is a 90* bend in front of the pump I don't really like. Thanks again for the reply.
@levyngwenya5948 Жыл бұрын
I'm curious about compasentor
@JackWeeks Жыл бұрын
I'm glad to hear that! Many people misunderstand the compensator. I hope your curiosity drives you to learn as much as you can. Happy troubleshooting!
@bjarneandreasen487 Жыл бұрын
A pump creates pressure and it the system resistance making the level of flow rate, not as explained here!
@defaultytuser Жыл бұрын
Very useful! I keep this video on a 'rewatch' playlist that I revisit every time I need to dig up some lost knowledge , and I've come to this one many times over the years but never commented. Thanks a lot Jack!!
@JackWeeks Жыл бұрын
Thanks, D! I'm glad it has helped!
@bkm0768 Жыл бұрын
Nice information sir
@charlesmac4356 Жыл бұрын
Hi sir jack it's moog RKP pump 80cc with loadsensing compensator which one is set 2nd on the pump compensator if relief valve is setted 200 bar
@charlesmac43562 жыл бұрын
Yes sir it's true someone turned the pressure above system relief valve and thanks once again
@charlesmac43562 жыл бұрын
Hi sir Jack thanks for teaching me something i didn't know about torque horsepower controller it amazing because didn't know where to start to set or increase flow as the system relief valve is settled 120 on kawasaki axial piston pump and the roller screen the rollers are running fast and oil is very hot you can cook meat with this hydraulic oil and just touching the tank your hands are burning also electric motor and pump they hot and tripping
@JackWeeks2 жыл бұрын
Hi Charles. You didn't mention before that the oil was overheating. That may be a separate issue from the breakers tripping, Check to be sure that your pump compensator is set below your system relief. The relief valve in such a system should never open because it is usually only a backup in case the pump compensator fails to limit pressure. Make sure the relief valve is set high enough above the compensator that it does not dump. Your oil should cool down then.
@JackWeeks2 жыл бұрын
Actually, upon rereading your original question, you clearly DID mention that the oil was hot, but apparently I chose to ignore that for some reason. Your whole problem is likely to be that someone turned the pressure up on the pump and got it set above the relief valve. See this video on setting them: kzbin.info/www/bejne/oIqzhKqedsypeK8
@charlesmac43562 жыл бұрын
How to set a kawasaki axial piston pump K3vg280 with torque horsepower on the hpu because it is the system trips while operating and where should I decrease flow or increase it on the controller
@JackWeeks2 жыл бұрын
Hi Charles, thanks for your question! That pump should have a volume stop (manual volume limiter) on it. This is simply a screw that limits the travel of the swash plate. Turn it clockwise and that should make the system stop tripping.
@charlesmac43562 жыл бұрын
@@JackWeeks thanks Jack you simply the best people like you deserve more in this hydraulic departments you explain things easily thanks buddy
@emranhossain62812 жыл бұрын
Good🇧🇩
@piedpiper83552 жыл бұрын
I follow on the procedure however I have a trailer that has the pump submerged in the reservoir with a Honda engine on top. Kinda like a big ice cream machine with paddles inside it that run via hydraulics. I'm having to replace the pump. What would the adjustment procedure be for the new one?
@JackWeeks2 жыл бұрын
Thanks for your question! Is this a submerged pressure compensating pump? Usually, the only way to set one of those is on a test bench, but you can usually order it preset to the desired pressure. Of course, if it is a fixed displacement pump, you need only set the relief valve, which should be external.
@jimmyjordan68472 жыл бұрын
great first step explanation, old time technician but today I learned the best first lesson about hydaulic, thank you
@JackWeeks2 жыл бұрын
Thank you for your kind words, Jimmy!
@timhanna8702 жыл бұрын
if only they were all that easy. what if u don't have a compinsater and no pressure being generated out of 2 spool valves. but the other 6 valves operate fine?