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Fork Lift Build

jd f725 wheel chair lift

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#16 secondtry OFFLINE  

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Posted June 28, 2017 - 01:02 AM

Apparently the small solenoid controls nothing.  Pulls voltage directly from the battery thru the down switch thru the small solenoid to ground but accomplishes nothing. Don



#17 Alc OFFLINE  

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Posted June 28, 2017 - 05:14 AM

Could the small solenoid be used to dump the pressure to lower the lift ?  


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#18 KennyP OFFLINE  

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Posted June 28, 2017 - 05:50 AM

I think you're missing 12v to the red wire.
Can you post a pic of the small solenoid and what it's mounted to?

Yes it needs 12V, but hooking it in with the White wire causes the pump to raise the lift.

 

Apparently the small solenoid controls nothing.  Pulls voltage directly from the battery thru the down switch thru the small solenoid to ground but accomplishes nothing. Don

See Alc's reply below.

 

Could the small solenoid be used to dump the pressure to lower the lift ?  

 

 

Here's some pics of the wiring.

DSCN3011.JPG     DSCN3012.JPG

 

The solenoid is in this pic. It doesn't seem to be working right now, plunger is, but I think the coil is bad. Will check some more today.

Image004.jpg
Image004A.jpg

 


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#19 MH81 OFFLINE  

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Posted June 28, 2017 - 06:22 AM

All is right. That's how our box truck lift is.
Looks like Red to either batt plus or the large blue wire stud at the big solenoid.

Edited by MH81, June 28, 2017 - 06:25 AM.


#20 KennyP OFFLINE  

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Posted June 28, 2017 - 06:30 AM

I did start making a mount for it to sit on. Found some 1/4" X 2" angle and drilled it to match the existing holes.

DSCN3003.JPG     DSCN3004.JPG

 

Had some 1/4" X 2.5" angle and cut them to fit between the 2" pieces. Had to trim the corners off so they fit down flat.

DSCN3005.JPG     DSCN3006.JPG

 

Here I have it rigged up on a table about 27" tall. It will go to the ground, so I'm thinking it will raise about 30" total. High enough to put something in a pickup or on the table.

DSCN3007.JPG     DSCN3008.JPG

DSCN3009.JPG     DSCN3010.JPG

 

I'll have to mount it a lot more solid to find how much it will lift, this just works for testing! I have my suitcase weights (160 lbs. total) on the back side for counterweight on the table.


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#21 KennyP OFFLINE  

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Posted June 28, 2017 - 08:40 AM

I have confirmed that the solenoid is working, just need the red wire for it hooked directly to the incoming 12V source( cable side of solenoid). I'll need a long cable to run from the battery to this solenoid. Now to get the deck/lift off the the F725 so I can start making a mount for it. I will install a ROPS of a sort to use as an upper brace for the main frame!


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#22 secondtry OFFLINE  

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Posted June 28, 2017 - 10:30 AM

Could the small solenoid be used to dump the pressure to lower the lift ?  

   The wiring diagram posted shows a solenoid control circuit only. No controlled circuit. As drawn in the diagram it could be an actuator mechanically controlling a valve, As I understand a solenoid it is an electrically activated switch. You have a coil in one circuit  which when energized closes a switch in another circuit. The diagram shows the coil "control" circuit but not the switch "controlled" circuit It seams to be an incomplete diagram. Don    


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#23 KennyP OFFLINE  

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Posted June 28, 2017 - 12:52 PM

   The wiring diagram posted shows a solenoid control circuit only. No controlled circuit. As drawn in the diagram it could be an actuator mechanically controlling a valve, As I understand a solenoid it is an electrically activated switch. You have a coil in one circuit  which when energized closes a switch in another circuit. The diagram shows the coil "control" circuit but not the switch "controlled" circuit It seams to be an incomplete diagram. Don    

That's how it is wired, Don. The red wire from the solenoid has to go to the 12V cable for it to work at all correctly. I haven't a clue why they did it this way.

 

The dissection begins.

DSCN3013.JPG  

 

Got the lift parts out of the way.

DSCN3014.JPG

 

As things are right now, my mount height is 30" up. Not liking that, as that will cantilever the back end into the air. So I will 'adjust' the lift for this and make the mount much lower. Gonna take some contemplation.



#24 KennyP OFFLINE  

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Posted June 28, 2017 - 02:57 PM

If anybody out here has the smarts, what metric bolt is in between a 7/16" and 1/2"? The 7/16" is loose in the threads, 1/2" won't start in them. This is 'coarse' threads, like metric gives a ****.



#25 dtsh OFFLINE  

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Posted June 28, 2017 - 03:03 PM

This would imply 12mm

 

 

>This is 'coarse' threads, like metric gives a ****.

 

Metric cares very much and is probably crying in it's room, meanie.  :D


Edited by dtsh, June 28, 2017 - 03:05 PM.

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#26 KennyP OFFLINE  

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Posted June 28, 2017 - 03:17 PM

I hope it has a good cry, cause they suck to me! How you figure what size bolt in that mess is beyond me and I will not try to understand it!!!!!!


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#27 KennyP OFFLINE  

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Posted June 28, 2017 - 05:35 PM

If I 'offended' anyone, didn't mean to! But I learned inches and fractions nigh on to 65 years ago! Never seen anything to help me learn the metric crap! Just seems like it's something else the government is trying to force me into! Now my political triad is over!


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#28 KennyP OFFLINE  

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Posted June 30, 2017 - 04:49 PM

Finally found something suitable for the lower arms today. Some 1.5" X 1.5" square tube. Made some hangers and welded that all together.

DSCN3018.JPG

 

Put them on.

DSCN3019.JPG

 

Turned my attention to the upper hangers! Made some pieces to mount under here.

DSCN3020.JPG     DSCN3021.JPG

 

Throwed a jack under the front and looked things over.

DSCN3022.JPG

 

Decided I needed to get the machine to an acceptable level all directions since I am working on gravel here.

 

DSCN3023.JPG     DSCN3024.JPG

 

Think this will work!

 


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#29 GeorgeT OFFLINE  

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Posted June 30, 2017 - 08:24 PM

Kenny, does the small solenoid wire back to the motor for power down?
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#30 secondtry OFFLINE  

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Posted July 01, 2017 - 12:05 AM

If anybody out here has the smarts, what metric bolt is in between a 7/16" and 1/2"? The 7/16" is loose in the threads, 1/2" won't start in them. This is 'coarse' threads, like metric gives a ****.

9/16 tap Don






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