Really appreciate this 2 part series. I now understand this WAY better, seeing the components and the detailed schematic breakdown. Excellent videos.

I am a new Hydraulic maintenance engineer in the cement industry. Your video was very helpful for me thank you very much Sir.

I forgot to explain why standby pressure is higher than margin. oops. I'll do a 3rd video on these controls. I want to talk about electric control of l/s and also about torque limiters anyways so I'll cover all that in the next one.

You were my favorite teacher when I went to school! Awesome guitar player too! Learned so much from you!

a masterpiece for explaining DFR controllers of BR. never ever seen such a great work thank you so much

awesome explanations. thank you. i've been struggling with this for a while - but after your explanations and visual walk-through, everything that i was being told has suddenly clicked together. i understand what is happening much better now, and why these components are important.

Thank you so much!! I loved the 2:45 clip. And thats why we still here. We learn every day. Big blessings. Thank for the video!!

This is one of the better explanation of this type of pumps I have found. Thanks for your effort. It wud have been nice if you had explained in what real world situation, wud the Pressure Cut Off work or come into action.

Very good explanation thank you very for your efforts to share knowledge and information. Thumb up❤

Awesome video! Thank you for helping me understand the pumps operation. You are an excellent teacher.

Thank you very much sir, we learn a lot on this channel

Thanks for taking the time !! The Fog lifts as the mystery is explained !! lol

Thanks alot sir. Learn from Myanmar. North Asia.

very nice explanation using a cutaway. very helpful. keep'em coming. thank you!

very nicely explained

Awesome video sir very very knowledgeable thank you so much for this video 🙏

Great video really helped me out ! Just a question, if my squash plate seems to be stuck in low flow which creates slow hydraulics, which one should I be adjusting ? I have a John Deere 230clc if ever that can help ! Thanks have a good one

Watched both vids , great explanation. I've got a Volvo ec 60e that uses open center negative control . Be great if you could do the same type video explaining that and how it differs from your CCLS system . Thanks

Thank you soooo much for such awesome videos! Looking forward for more🙏

excellent explanation and demostration

Thank you for explaining this so well detailed! i got this pump on my 3,5 ton Pel job excavator but it just seems like it keeps pushing full oil. I know: the load sense signal is 0, but a high pressure comes from the pump to the load sense signal (tested that with open lines). the pump draws full engine power while not being operated and the engine can't get over 1800rpm... the pump does listen to the standby regulator as the powertake becomes less when i run the standby regulator out. I got a extra power regulator on the side of the pump which i plugged up, so that aint causing it either at the moment. i tried a different new regulator of a same pump, but same issue. To me it really looks like the destroke piston is having an issue and isn't returning completely out, or the spring must have broken or something like that. Could you maybe give me your thoughts on this issue?

This was very helpful to understand the Load sensing system. Would you like to do a Zoom education session to our trainees via Zoom. We are a Trade School in Sri Lanka. However due to Covid 19 lock downs & outbreak our study limited to online. Which make difficult to get the overall learning environment. Such as practical training. Thanks for your Video any way.

Thank you Sir, you are excellent guy thank u again ,

Thanks for sharing nice information

this is so helpful thank you.

Please explain difference between DR controller and DFR1 controller , basic difference is DFR1 control both pressure and flow . If we use closed loop DCV then how both type of controller will make any difference? What benifit we have to choosing DFR1 over DR? As both has almost same internal circuits.

Love the videos! Helped me out so much

Hi there, Thanks for this great explaination. Can you also please explain how hydraulic pumps for Komatsu PC200-7 & CAT 320D work? Thanks once again

I've seen those pump control valves just like the one you have cut away there leak the load sense pressure so then the system won't build the correct amount of pressure. I've taken them apart and inspected them but never find anything wrong but after installing a new valve on the pump, the system works correctly. Any idea where in that valve the problem exists?

boss thank you ❤

very nice detailed information ..thank you!.

WAITING FOR THE VIDEO OF TORQUE LIMITOR CONTROL (DFLR CONTROL).. PLEASE EXPLAIN IT THE SAME WAY U HAVE DONE THE PREVIOUS CONTROLS... AWESOME ...

Hello your a good instructor have never had such an explanation .Do you have lessons for hydraulics would like to subscribe to them

Realy nice ... But i can not understand difference between load sensor and servo valve ?

Excellent

Nice

@hystat Is there a power-limiting valve to prevent the diesel from stalling in this setup, or where would it be located if it had one? Rexroth manuals refer to this as "LA", which is a relief valve that overrides/lessens the LS pressure signal and destrokes the pump in case the combination of flow and pressure exceed the power of the prime mover (smaller then the pumps corner power). Any idea about this?

Nice explanation , well done

great thank you

My small fishing trawler has a pump which looks similar but I have a manual lever on the pump which I can use to give low through to high flow, I then have a normal two way control valve on the winch, is that some kind of load sensing pump?

waiting for the vedio explanation of torque control DLR control..please do it soon..

Thank you for your effort to explain pump control.. but I want to be sure from a point You said in this video (DFR pump means load sensing ) while in RR catalouge for pump A10VSO for example say just DFR not load sensing My qestion Is DFR means load sensing ?? Or there is difference between them ? Thanks

Good 👍👍👍 👍👍👍

thank you for the educational video

I would like to know more about this particular pump bcoz I can assemble it but don't how it works and it's always passing the test results please pin me

how the load sensing spool works not explained when certain pressure drop is reached across dcv.you only explain the upstroke and destroke pistons.

Is there a video on the AA4VG71EP2D1 proportional valve that controls the swash-plate?

Thanks for the great video. I am working on a project that will involve this type of hydraulic system and the pump I am considering is a Rexroth just like the one in your video. The problem I am running into is that the pump I am looking at does not have the DFR control housing attached to it. Would you know of a part number for just the DFR control block? Possibly where to get one from?

Like the video man. Have a question you may have an answer for. That looks like an a10vso28 or 45. Clockwise rotation. And the way that comp is on there in my experience doesn't usually operate correctly. Is that a standard dfr/dr compensator? I build and test these daily for a living and I've never come across one of these with comp controls facing your inlet port. Very informative video regardless. Im just hoping I might learn something. And also is that a caterpillar pump?

am trying to understand how the ls valve and pc valve work in an hydraulic pump . could you make a video about it .thank you

Can any one tell me why these 2 valve used (Pressure comp and LS valve) while one valve able to control the swash plate?

Super

thank my teacher

Nice job!

A10VS045DFR/30R-P PA12K 25 is there any agent who are selling such hydraulic pump.

I could sure use some help on my asv rc 100 tractor with a rexroth pump I get a time delay when the lever is moved for track movement it is slow to respond to the movement of the lever

Thanks a zillion!

Thank you

Hi there is any video how to setting rexroth amplifier card VT5041-31/3-0 do you know please share some video

at minute 0:35 you say X is for load sensing line and later on you say X is case drain connection... I am confused...

Muito bom.

Thank u. ...

please enable translation options

THANKS

DFR & DRF means??? Full form??? Please any body

any part 3 yet?

if the machine is idling whow the pump works

What is linda?

what type of machine is this pump off of?

english captions please

Hi

sorry DFLR control..