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Wheelchair Lift

wheelchair lift braun

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#1 KennyP ONLINE  

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Posted October 27, 2014 - 07:11 PM

I got one of these given to me. It's not attached to a vehicle. It is a much older Braun, but I haven't found a manual that matches as yet. I have the up button working. The down was okay for a while, then quit. I am having to refill the system as the 'poly' lines cracked and let the pretty red stuff out. Got most of a quart of ATF in it before I gave up for the night.

This unit has only one solenoid, so I am a little unsure if I have it wired right. I'll get some pics tomorrow for you guys.


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#2 JDBrian OFFLINE  

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Posted October 28, 2014 - 05:27 AM

I've never seen how one of those lifts operates. I know that those van conversions cost $$$$. My SIL has MS and they were lucky to score a lightly used older van for a price they could afford.


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#3 KennyP ONLINE  

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Posted October 28, 2014 - 05:52 AM

Hopefully, I'll get this one working today!



#4 MH81 ONLINE  

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Posted October 28, 2014 - 06:34 AM

On most I've seen, the 'down' is done by letting the juice run back thru an orifice and back into the reserve tank.
A little piece of dirt could really mess that up.
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#5 ol' stonebreaker ONLINE  

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Posted October 28, 2014 - 09:52 AM

  Kenny, does the one solenoid run the pump motor or is it a solenoid valve to lower the lift?

                                                      Mike


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#6 KennyP ONLINE  

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Posted October 28, 2014 - 04:21 PM

  Kenny, does the one solenoid run the pump motor or is it a solenoid valve to lower the lift?

                                                      Mike

Here's some pics of the lift so you can see what it has.

Image001.jpg     Image002.jpg

Image003.jpg     Image004.jpg

Image005.jpg

 

I'm thinking this may make an addition to my fork lift so I can raise things high enough to load into a PU or such.


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#7 ol' stonebreaker ONLINE  

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Posted October 28, 2014 - 04:47 PM

  I see a ford style solenoid to run the pump motor and what appears to be another solenoid in the side of the pump housing. Could it be the one that lets the lift down? 

                                         Mike



#8 KennyP ONLINE  

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Posted October 28, 2014 - 04:56 PM

I think you are correct there, though it's more of a 'gravity' down.



#9 Bmerf OFFLINE  

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Posted October 29, 2014 - 06:04 AM

  ... and what appears to be another solenoid in the side of the pump housing. Could it be the one that lets the lift down? 

                                         Mike

 

This solenoid reminds me of the one on my meyers snow plow.

 

Here is an example:

http://www.ebay.com/...116eeb2&vxp=mtr

 

Very simple in design, coil pulls a needle valve from its seat allowing fluid to bypass. Easy to check, with power applied, the coil turns into a magnet and will attract a screw driver. If it hasn't been used in awhile, the needle valve will sometimes get stuck in its seat. Remove the outer metal cover, then the needle valve assembly and clean.


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#10 Bmerf OFFLINE  

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Posted October 29, 2014 - 06:06 AM

Oh and be careful, the needle valves are pricey. The coils come in different sizes for different valves.


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#11 KennyP ONLINE  

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Posted October 29, 2014 - 06:41 AM

The biggest issue is the wiring. I blew up the 4th pic so you can see better.

Image004A.jpg

 

The Blue wire off the second post has to be hooked to the HOT/Power In to work. The red wire has to be hooked in with the first post/white wire. Otherwise, nothing works. I need some way to set the base up in the air to see if it will work. But that needs a solid mount as this thing is heavy. I may have to temp mount it to the back end of my trailer to see if it works right.

 



#12 Bmerf OFFLINE  

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Posted October 29, 2014 - 07:04 AM

Kenny,

I think it should be wired something like this, but, I might add a fuse or two, don't want to let the smoke out. No wires are connected except at the ends, I should have used different colors for the wires, but I think you get the idea.

 

wiring 2.png


Edited by Bmerf, October 29, 2014 - 07:07 AM.

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#13 Bmerf OFFLINE  

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Posted October 29, 2014 - 07:11 AM

Press the up button, energizes big solenoid and the motor, automatically raising the lift. Down button energizes small solenoid, moving needle valve and lift slowly lowers.

 

Not sure if this is correct, but should work if all parts work.


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#14 KennyP ONLINE  

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Posted October 29, 2014 - 07:27 AM

Kenny,

I think it should be wired something like this, but, I might add a fuse or two, don't want to let the smoke out. No wires are connected except at the ends, I should have used different colors for the wires, but I think you get the idea.

 

attachicon.gifwiring 2.png

That is totally different from what is already there, but may be the solution. First off, I'll need it mounted to the trailer so I can see if it will lower as it is in the up position right now. The little jack works above the pump to raise it if needed.

It would have been nice if they had stamped the model # in it instead of a decal that is now blank!

I'm thinking this might make another type of fork lift, but the weight of just this part would need it to be a pull behind.



#15 trowel OFFLINE  

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Posted October 29, 2014 - 06:37 PM

Would be neat to have the lift on a slightly bigger garden tractor or compact.

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