Hydraulic Scissor Lift 7

[AC-Power]

Good Day All,

I am not a mechanical engineer, rather, I am electrical. Having said that, I am hoping there is someone in here that might have fluid mechanics experience.

I just bought a scissor lift from an auction. When I attempt to drive forwards or reverse, all I hear is the 24VDC hydraulic motor start, no movement. Too, when I attempt to raise the platform, same thing.

Is there anybody in this forum who might have a suggestion on what part I should investigate/troubleshoot in an effort to remediate this problem?

Regards to All

 

[1503-44]

There is fluid in the lines, right? BTW there is a fluid power forum.

Statements above are the result of works performed solely by my AI providers.
I take no responsibility for any damages or injuries of any kind that may result.

 

[AC-Power]

Thanks 1503-44. Well, I am going to check to ensure there is no airlock in the lines (& lines are full with hydro fluid) as the pastmost owner may of been messing with it.

 

[itsmoked]

1st thought is, indeed, a lack of enough hydraulic oil.
2nd is that the directional solenoid is not operating.
3rd is a stuck open relief valve.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[TugboatEng]

4th, shaft/coupling is broken.

 

[AC-Power]

Thanks So Much itsmoked and TugboatEng. I am going to look at both of those things tomorrow.

I appreciate your submission!

 

[dik]

Check all fittings and components to see if they are operable; some you may not be able to check. I'd completely empty the system of hydraulic juice and refill it. Make sure you use the right material; the wrong hydraulic fluid can destroy seals. Make sure you purge all air from the system... it's a place to start. See if that helps.

If all else fails, I hear they make great lawn ornaments.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[saplanti]

Do not buy anything without seeing it works. I think you were either given a complete dodgy product or a product that there is need for repair, or you knew that it was requiring a repair work, that is why it was cheap. Beside all, I would ask the seller first what was wrong with it.
This kind of gadget requires a specialist to go through troubleshooting.

 

[LittleInch]

What make and model?

Some photos would be good.

Do you mean the 24V hydraulic pump?

You need hydraulic pressure before the hydraulic motor can work or the hydraulic pistons operating the lift.

Pretty simple to check if you've got hydraulic oil in the tank.... Then see if the pump is working. There should be a pressure guage somewhere.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[btrueblood]

We have a scissor lift here at work, which we inherited from the original owner who was using it during remodelling of our current shop. The stupid thing has so many "safety" features it's ridiculous, with lockouts on top of interlocks on top of keyswitches where the key is missing and replaced with a spare screwdriver...

So, once you have verified the thing has fluid and the pump generates pressure, you will need to troubleshoot the electrical system. Get a manual, and hopefully a wiring diagram for your lift model...google is your friend.

 

[mfgenggear]

AC-Power (Electrical)(OP)8 May 21 21:22
Good Day All,

I am not a mechanical engineer, rather, I am electrical. Having said that, I am hoping there is someone in here that might have fluid mechanics experience.

I just bought a scissor lift from an auction. When I attempt to drive forwards or reverse, all I hear is the 24VDC hydraulic motor start, no movement. Too, when I attempt to raise the platform, same thing.

Is there anybody in this forum who might have a suggestion on what part I should investigate/troubleshoot in an effort to remediate this problem?

Regards to All

My suggestions are purchase repair manual if possible.
second have a repair company come and do a diagnostic and a written quote.
give you and idea what is wrong with it, then decide if you can tackle it. or farm out the repair.

 

[1503-44]

Read the comments above.

Statements above are the result of works performed solely by my AI providers.
I take no responsibility for any damages or injuries of any kind that may result.

 

[AC-Power]

Thanks to All for the your help.

I have attached some pics. I think there a filter pictured here, a solenoid valve, oil reservoir indicator, other pics.....I don't know.

I've never attached pictures before....I hope it works.

 

[AC-Power]

More pictures...

 

[AC-Power]

More

 

[AC-Power]

More

 

[AC-Power]

More

 

[AC-Power]

Last one.

 

[3DDave]

It's a Skyjack scissor lift, which probably has a data plate for the item with the maker's part number on it that could be used to track down the manuals.

https://www.skyjack.com/

 

[LittleInch]

Well all we can really say as 3D dave says is that it is a skyjack lift of some sort (photo of the name plate would help) and it seems to have enough hydraulic oil in it.

If you didn't get a manual with it then it's time to find one....

And probably find your multimeter.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.