Manual hydraulic pump for dump trailer

[iowabowhunter]

Hi guys

I'm in the process of building a dump trailer out of a trailer that I built from an old van I had. I have a cylinder already it is a 3x24. I'm looking for a fairly inexpensive hand pump to raise and lower the trailer. I thought this would be cheaper then purchasing a 12 volt unit. I may be wrong. I can purchase the 12 volt units off of ebay for around 300.00. All the manual pumps I have found are running close to that. So is there anywhere any of you know of where I can find a "cheap" manual pump.


Thanks
Bob

 

[magicheater]

Hi guys

I'm in the process of building a dump trailer out of a trailer that I built from an old van I had. I have a cylinder already it is a 3x24. I'm looking for a fairly inexpensive hand pump to raise and lower the trailer. I thought this would be cheaper then purchasing a 12 volt unit. I may be wrong. I can purchase the 12 volt units off of ebay for around 300.00. All the manual pumps I have found are running close to that. So is there anywhere any of you know of where I can find a "cheap" manual pump.


Thanks
Bob

After you dump that trailer once you'll wish you had the electric one!! :laughing:

 

[bcp]

Use a cylinder with a built in pump.



Bruce

8 Ton Heavy Duty Long Ram Hydraulic Jack

 

[Dr Dave]

Do you have the P/S pump and starter, from the old van? You could build your own pump.

 

[Diamondpilot]

I agree, get a electric one. Try searching out a power trim unit from a inboard/outboard boat motor like a Mer Cruiser. Make sure your cylinder is double action so it has the extra hydraulic volume needed above and beyond what the reservoir holds.

Chris

 

[iowabowhunter]

Use a cylinder with a built in pump.



Bruce

8 Ton Heavy Duty Long Ram Hydraulic Jack

I thought about going that route. I wonder how difficult it would be to rig up some linkage to be able to pump the jack from the front of the trailer?? I wouldn't want to be hanging out under there while dumping the load, and I don't think there is enough travel to be able to mount it ahead of the bed.

 

[iowabowhunter]

Do you have the P/S pump and starter, from the old van? You could build your own pump.

actually i do have both of them,,,,,never really thought of this. So how would I rig somthing like this to work??

 

[magicheater]

Use a cylinder with a built in pump.



Bruce

8 Ton Heavy Duty Long Ram Hydraulic Jack

I used one like this on a folding wrecker I built on the back of a 1-Ton truck. Since it was a seldom used function it sufficed, had I used it regularly I would have automated it electrically. I just recently ran a heavy cable back from my dual battery system to my dump trailer so I can dump ALL DAY LONG and not have to charge the dump trailer battery, even works with out the trailer battery. Worth the effort because I don't get caught with a load on I cannot dump. Time is everything now a days. Even Quick attaches aren't so quick any more cause you have to get off the tractor. :laughing:

 

[ETpilot]

That HF jack is ok but it is slow. If you are going to use a manual jack try to find one with a dual action pump. It will pump much faster. Finding this type of jack is the hard part. I made some jack stands to jack up airplanes. I looked for a dual action jack but never could find one. I went with the HF but found it is slow and takes many strokes to extend the ram.

I know that dual action jacks are out there just cannot find a distributor.

 

[Diamondpilot]

actually i do have both of them,,,,,never really thought of this. So how would I rig somthing like this to work??

Take the starter motor apart and install a pulley on the end. Use a V belt to drive the power steering pump all mounted to a bracket you would fab/weld up. You may need a larger reservoir and then simply adapt the hydraulic hoses to your cylinder.

You will need a valve to control up and down of the dump bed but it should work just fine.

Do you have a tractor with remotes? If you do why not just install some long hoses and use the tractors hydro system to do the dumping?

Chris

 

[iowabowhunter]

Take the starter motor apart and install a pulley on the end. Use a V belt to drive the power steering pump all mounted to a bracket you would fab/weld up. You may need a larger reservoir and then simply adapt the hydraulic hoses to your cylinder.

You will need a valve to control up and down of the dump bed but it should work just fine.

Do you have a tractor with remotes? If you do why not just install some long hoses and use the tractors hydro system to do the dumping?

Chris

Got it!!!,,,,my main question was on the hydraulics. Would I need a valve?? Or could I just let the bed come down via gravity,,,by just shuting the pump off. I have a single action cylinder.

I'm also wanting to use this trailer behind my pick up so it needs to have it's own system.

Thanks for all the help guys.

Bob

 

[magicheater]

Got it!!!,,,,my main question was on the hydraulics. Would I need a valve?? Or could I just let the bed come down via gravity,,,by just shuting the pump off. I have a single action cylinder.

I'm also wanting to use this trailer behind my pick up so it needs to have it's own system.

Thanks for all the help guys.

Bob

It would seem to me that if you powered the system up and shut off power that a valve would suffice in a gravity down system, configured correctly of course.

 

[iowabowhunter]

It would seem to me that if you powered the system up and shut off power that a valve would suffice in a gravity down system, configured correctly of course.

So I would have a feed line running from the pump to the cylinder. Another line running from the vent to the oil tank. Where would I put the valve?? I kind of thought that the weight of the bed would push the fluid out of the cylinder and back through the pump into the holding tank,,,,,no??

 

[Bladehauler]

The old class 8 cab over tractors had a hand operated pump that worked two double acting cylinders to jack up or jack back down the cab.
If there is a big truck salvage yard close you might check with them .

Hope this helps.
C-ya
Scott

 

[iowabowhunter]

Originally Posted by magicheater View Post
It would seem to me that if you powered the system up and shut off power that a valve would suffice in a gravity down system, configured correctly of course.

So I would have a feed line running from the pump to the cylinder. Another line running from the vent to the oil tank. Where would I put the valve?? I kind of thought that the weight of the bed would push the fluid out of the cylinder and back through the pump into the holding tank,,,,,no??

Could somebody give me an explanation or direct me to a diagram.

Thanks
Bob

 

[magicheater]

Originally Posted by magicheater View Post
It would seem to me that if you powered the system up and shut off power that a valve would suffice in a gravity down system, configured correctly of course.





Could somebody give me an explanation or direct me to a diagram.

Thanks
Bob

Try this.

 

[iowabowhunter]

Thanks

 

[magicheater]

you bet.

 

[dstig1]

You may want to post up in Hydraulics sub forum where JJ and others will see it. Your valve will probably need to proportion the flow between the cylinder and a return to throttle the speed and avoid deadheading the pump.