Can someone help me understand this lift cylinder/pump?

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Perryd

Junior Member
Location
NL
Thanks for the replies everyone. Getting a gravity down setup certainly seems like the way to go but I will try some of the things suggested until I get my hands on one.

Nice to see such an active forum with no judgement for someone like me up doesn’t know up from down when it comes to this stuff.

I’ll follow up with whatever solution I end up finding.
 

cwren2472

PlowSite Fanatic
Location
north east
Not sure if a diode is needed for this. Maybe a simple momentary toggle with six terminals on the back. So when going up you are powering the motor and valve. The down would be wired without powering up the motor on the other side, but sending power to that valve/ magnet.
That's a great suggestion - much simpler than wiring a diode in.
 
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Perryd

Junior Member
Location
NL
Three wire switch, power to the switch, then second wire is power to the motor solenoid, third wire is power to the valve magnet, which ain't there by the video.
I have a 3 wire switch. I’m wondering if I have everything I need for this setup but my wiring is not correct? Or maybe main solenoid is bad? When I first put power to it main solenoid clicked rapidly in one direction on switch and did nothing on other direction. But in hindsight maybe the magnet coil was actually working But the motor was just jot getting power.
Will update later !
 
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Perryd

Junior Member
Location
NL
I have a few pics of the pump in the last page of the thread but I’ll attach a few more. So now that I’ve hooked everything up the way I assume is correct the release valve shot fluid like 20 feet out the open port when I hit the the down button on controller. But the up button still rapidly clicks and smokes a bit when I press it. Here is another video as well. It does the same thing when I try cross the solenoid like you would trying to start an old car with a broken ignition switch. https://streamable.com/hi8maa
 

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TJS

PlowSite.com Addict
Location
Fairfield,CT.
I don't see the switch you are mentioning that Randall has mentioned(a simple momentary toggle). I do still see the pendant. Your pics and vids are so close I cannot tell what is going on as a whole. Couple things come to mind. Low battery power. Bad main power solenoid or bad ground. How are you grounding this motor? In one of your pics there are two threaded blind holes which are 3/8-16 threads if I remember correctly. This is the mount for this thing. The ground terminal from the battery should be attached here. Also, why are you running this pump in the vertical position. Take the plastic reservoir off and you will see how the pump pickup is positioned in relation to the reservoir. Something could also be jammed in this pump. Don't continue to do what you are doing till you know the pump spins freely. When you take the reservoir off you will see the pump right there. Take the bolts out that hold it. There will be a splined coupler there when you pull the pump off the valve block as well as a figure 8 looking O ring. Don't loose them. Make sure the pump spins freely by turning the shaft with your hand. This also will give you a chance to clean all the muck up in that thing and see the orientation this unit should be in.
 
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Perryd

Junior Member
Location
NL
It’s a 12volt car battery that is good. So I think I have finally figured it out (maybe)

I bypassed the solenoid and got the pump to run. I’m used to starters and the like where the lug on the side is positive and the body of the motor negative. This is opposite.

as for the pump. It seems to me that the 2 fluid outlets both do the same thing.They both push out fluid with up button both release pressure when down-button is pressed (pump doesn’t run). It must have been from something that used 2 single acting cylinders.

i am going to try another good known battery before I try a new solenoid.
 
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Perryd

Junior Member
Location
NL
I don't see the switch you are mentioning that Randall has mentioned(a simple momentary toggle). I do still see the pendant. Your pics and vids are so close I cannot tell what is going on as a whole. Couple things come to mind. Low battery power. Bad main power solenoid or bad ground. How are you grounding this motor? In one of your pics there are two threaded blind holes which are 3/8-16 threads if I remember correctly. This is the mount for this thing. The ground terminal from the battery should be attached here. Also, why are you running this pump in the vertical position. Take the plastic reservoir off and you will see how the pump pickup is positioned in relation to the reservoir. Something could also be jammed in this pump. Don't continue to do what you are doing till you know the pump spins freely. When you take the reservoir off you will see the pump right there. Take the bolts out that hold it. There will be a splined coupler there when you pull the pump off the valve block as well as a figure 8 looking O ring. Don't loose them. Make sure the pump spins freely by turning the shaft with your hand. This also will give you a chance to clean all the muck up in that thing and see the orientation this unit should be in.
thanks I’m going to take it apart tonight and get to know it better. How many volts and CCAs do I need to make it run. Would I need well above 12v like from a running motor?

you guys are so helpful thanks again!!
 

dieselss

PlowSite Fanatic
Location
N.w. Indiana
I bypassed the solenoid and got the pump to run. I’m used to starters and the like where the lug on the side is positive and the body of the motor negative. This is opposite.
WHAT?
12v systems USUALLY use the case for ground or a stud on the case, and the copper stud in the back is the positive in.
 
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Perryd

Junior Member
Location
NL
WHAT?
12v systems USUALLY use the case for ground or a stud on the case, and the copper stud in the back is the positive in.
I know right!?!? Someone earlier in the thread mentioned polarity isn’t relevant on this type of motor so if that’s the case I’ll be changing it back to positive stud and negative case. If I don’t I’ve have to mount this thing in some type of rubber bucket because if it fell off or rubbed it would go BOOM lol.

that is if I’m looking at it correctly. Which may not be the case given how ignorant to how these work I am.. hah
 
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TJS

PlowSite.com Addict
Location
Fairfield,CT.
You misinterpreted the polarity comments. Go back and read them again.
As Crewen stated your motor only spins one way. As I stated I have an older tailgate lift pump where there are TWO SOLENOIDS that change the polarity. Your set up only has one solenoid. I also stated the negative terminal from the battery needs to be where these pumps mount provisions are which is the 2 threaded holes about 4 inches apart in one of your pics. That takes 3/8-16 bolts.
 
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Perryd

Junior Member
Location
NL
Ok guys... I feel so stupid.. my god.

so I finally hooked the dang jumper cables up where they are supposed to go and the switch wires as pictured and it runs perfect with the press of a button and also releases pressure with the other.

only thing is the pump pushes out one outlet that I have the line on and then releases it out the other side. I’m not sure what this will be like in reality, like perhaps it could be plugged and then the fluid will flow back into to the reservoir instead?

I’ll really have to mount the plow and play with it a bit to really see how it works because right now there is no weight to collapse the ram.
 
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cwren2472

PlowSite Fanatic
Location
north east
only thing is the pump pushes out one outlet that I have the line on and then releases it out the other side. I’m not sure what this will be like in reality, like perhaps it could be plugged and then the fluid will flow back into to the reservoir instead?
Correct - that is what I said earlier would happen. That is normal operation since it is designed for a 2 port cylinder where the fluid would push to the other end. I believe that you can just plug it and it should work ok but I'm not 100% positive. Worst case, you'd need a hose going from that port back to the tank.
 
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Perryd

Junior Member
Location
NL
Sorry I never really understood what you were saying until I had some more time to look at the pump. I thought about the hose going to tank as well, glad to know you think it’s an opinion. Thanks for your help and patience and I will update you all when I get the plow mounted. I think it’s going to work! The person I got it from said the motor was no good, I guess it was just a lose wire or dirt/corrosion by those 3/8 bolts you mentioned ( it was very dirty) . It think they just had some of the wires messed up!
 

Randall Ave

PlowSite Fanatic
Correct - that is what I said earlier would happen. That is normal operation since it is designed for a 2 port cylinder where the fluid would push to the other end. I believe that you can just plug it and it should work ok but I'm not 100% positive. Worst case, you'd need a hose going from that port back to the tank.
I think he can plug that other port, as long as his tank has a breather. Which it should.
 
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