Hydraulics Take the quiz: Tractor Projects  -- General Tractor Discussion Forum and Review Hydraulics Take the quiz: Tractor Projects -- General Tractor Discussion Forum

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 01-19-2016, 17:39 Post: 194345
candoarms



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 Hydraulics Take the quiz

Dear friends,

Every once in a while I come across something interesting and educational. This is something I thought I'd share with my friends here.

This is a 25 question hydraulics quiz. Don't worry about how you score. The idea here is to motivate yourself.....or to get you thinking about how much more you could learn about hydraulics if you'd only spend a weekend studying symbols, schematics, and systems.

This quiz is offered by GPM Hydraulics, in Georgia, USA. It's designed to test your knowledge level in order to qualify for one of their in-house hydraulics classes. The quiz is free. No gimmicks...no tricks. Just sign up at the site below. The answers to the quiz will be emailed to you upon completion of the quiz.

There are also many free videos posted at this site, which teach theory of operation on many common hydraulic machines. Very useful information, all of it.

Enjoy.

Joel






Link:   GPM Free Hydraulics Quiz 

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 01-19-2016, 17:46 Post: 194346
WillieH



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 Hydraulics Take the quiz

Joel,
As a FPS, (Fluid Power Specialist), I Thank you for passing this along for everyone. Over the years of selling hydraulic systems, servicing them and integrating them on a daily basis, I cannot tell you how many dangerous concoctions of hydraulic circuits I have witnessed.

Folks, PLEASE take a moment to educate yourselves a little if you are not hydraulically savvy already - it could save your life to understand how hydraulics work.

Best -
Willie H






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 01-19-2016, 17:58 Post: 194347
candoarms



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WillieH,

Yes Sir....I didn't even mention the safety side of things.

Of course...safety, when working with hydraulics is essential. Knowing how things work and where energy is stored is critical before breaking a fitting, or removing a plug.

I hope courses like this pop up more often. You know...I see some great classes on hydraulics posted at YouTube. If you folks don't mind, I'll post a few links here as time permits.

Many thanks, Willie.

Joel






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 01-19-2016, 20:33 Post: 194348
candoarms



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Here's a great video of an actual hydraulics class that is being presented to a group of students at a community college.

This particular video focuses on accumulators, but there's a bunch of great info here. (See Link Below)

I'll try to find other classes of this sort, if any of our members are interested.

Joel






Link:   Hydraulic Accumulators - A lecture 

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 01-19-2016, 21:21 Post: 194350
candoarms



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 Hydraulics Take the quiz

It might seem fairly obvious to most people who visit this fine group on a regular basis, but I see things happen around me that boggle my mind.

A local farmer lost his life while working on his grain truck. He had the box in the air when he disconnected a hydraulic hose on the lift cylinder. The weight of the box forced the hydraulic fluid out of that hose, and in a split second the farmer was cut in half, when the falling box pinched him between the frame rails.

The truck was shut off. The ignition key had been removed. The hydraulic pump wasn't running at the time. The farmer may have mistakenly believed that the hydraulic system was depressurized.

What he forgot to account for is the fact that the raised box turned his hoist's lift cylinder into a hydraulic accumulator.

Folks...even if you don't have an actual dedicated accumulator in your hydraulic system, I'm hoping that you now realize that a whole number of other components can be used to make one.

When your tractor's loader is left in the raised position, you have essentially created an accumulator in your loader arm lift cylinders. While the pressure in the cylinders may be very low, the weight of the loader and bucket is more than the human body can survive. Serious injury or death is only a second away.

Joel






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 01-20-2016, 13:53 Post: 194352
candoarms



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 Hydraulics Take the quiz

Here's an online class, given in real time, by a great instructor at Columbia Gorge Community College.

This class teaches the importance of fluid viscosity, filtration, effects of heat, and general fluid maintenance.

There are many important lessons taught here, such as the 4 different types of fluid filters, as well as the where, why, and how to properly place them in the system.

Enjoy the free online college course.

Joel






Link:   Fluid Maintenance, filtration, and contamination. 

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 01-20-2016, 16:34 Post: 194353
kthompson



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By no means do I hold myself out to be an expert on hydraulic systems but it has been my impression if a cylinder is designed to hold a load if pressure is loss then it has a holding valve that will prevent that lowering of the load when pressure has been loss. Of course removing that valve will allow the cylinder to drop very speedy. When I worked for a crane company doing the testing we had to kill the engine and work the levers to verify the system would remain up with loss of power. I would say you should do this on anything piece of equipment to learn your system and if it has cylinders that use those valves to check from time to time they are working fine. OF COURSE TEST WITH NO ONE AROUND AND NO REAL LOAD






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 01-22-2016, 13:33 Post: 194355
candoarms



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 Hydraulics Take the quiz

Here's a neat site that teaches hydraulic symbols, which will improve the user's ability to read and understand hydraulic schematics.

Flashcards are used to assist with memorizing the common symbols used in many hydraulic schematics.

This is NOT a complete list of hydraulic symbols.

See the link below.

Joel






Link:   Hydraulic Schematic Symbols Flashcards 

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 01-26-2016, 08:06 Post: 194373
kthompson



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Well took the test. I was rather pleased with my results. Did very well on those things I felt should know but as to reading symbols bombed. However I got I think four copies of the test results back. Was that their way of telling me to study??






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