Hydraulic Control Valve Cutaway HYDRAULICS FLUID POWER BASICS PART ONE

Bobcat Skid Steer Directional Control Valve

[@hydraulics]

I'm not sure why I keep saying 10 connections, when there's clearly only 8. oops.

[@raj51963]

Great explanation ! easy to understand , Keep up the good work .

[@BCben3]

Your videos are the best, do you know of any online courses available in Canada that a Red Seal mechanic could take to help fill in any gaps in knowledge when it comes to hydraulic systems used on equipment? I'm a perfect case study of the Dunning Kruger effect where when I was an apprentice I thought I knew it all but now 15 years later the more I learn the more I realize how little I know. Keep up the good work.

[@hydraulics]

Carl Dyke industrial training has some online courses. I haven't tried them. And thanks! I'll be uploading a bunch in the next month or two here. I know the feeling... lifelong learning. Lol

[@rogerl8488]

Hi , I have a Cat 246c skid as long I hold joystick up the bucket will raise as soon as I let off it goes down will not hold position. What could be wrong with it? Jacks don't leak I think it's bypassing in valve. Thank you

[@lasithrajamanthri5992]

G’day hystat, I am a big fan of your work, really helpful for a novice educator like me. And I came across this center drilled spools and don’t know the function of those, could you please explain what do you mean by float function of the center drilled spool valve , and what that drilled holes are for. Thank you very much

[@jonyemm]

Great video. Helped me with understanding the internal passages. Thank you

[@hydraulics]

Glad it was helpful!

[@DansEquipmentService]

This has answered so many questions I had on how these work with excellent visuals. Thank you!

[@hydraulics]

I'll put a couple up eventually about the BICS system too. Good to hear!!

[@DansEquipmentService]

@@hydraulics Awesome! I will definitely watch that series and share it with my fellow mechanics. If you have any more recommendations on hydraulic literature besides that mobile hydraulics manual I would love to hear about it. I'm trying to get a solid fundamental knowledge base on these systems.

[@jonathanwinkler5980]

Incredible video! Any possibility you could show/describe how to install the detent balls and spring for the lift spool?

[@ShermBASS]

So is it safe to say that Load Checks could not possibly be a factor for Tilt Cylinder Drift when the spool in the HOLD position as the Bridge ports for the load checks are blocked by lands on the spools. (assuming intact iron no cracks in valve body). Also, you went over port relief valves and some newer machines have Pilot Operated Directional Control Valve/ BICS Lock Valves on the lift and tilt circuits with a built in relief to Drain. I've removed mine and checked the orings and back up seals to find they are in tact, but im starting to suspect failure inside the valve itself. They are quite expensive and to just throw the part at my machine is not ideal. Is it possible to Bench test the functionality of these types of valves?

[@hydraulics]

@ShermBASS never seen anyone bench test them. You are correct, load checks do not cause drift.

[@olinqua1]

Brilliant video 👏🏽

[@hydraulics]

Thank you