Found this in an old outbuilding - What is it?

[MossflowerWoods]

also good luck trying to use that 12vdc power unit...:confused2:...it's life has been mostly being dragged around under a truck with salt/water and road grime....

If it is as rusty as it looks then you'll have a chore to clean up to reuse...

these pumps are nasty to restore cuz of the corrosion.....

wdchyd,

The cyclinder has the worst rust, but I assumed they both would be difficult regardless... They are going to sit around for some more time until I think of a use for it, or I have some spare time... That or they might just end up in the scrap metal (or craigslist?) who knows...

Thanks for all the great info!
David

 

[LD1]

G'day i would say that it is a displacement cyl which means it will push out. It has no piston usually just a big circlip to stop the rod from coming out, they work on the principle of that as you force the fliud in the rod pushes out so there is room for the fluid. They were never as strong as a normal piston type cyl as there is a smaller surface area for the oil to work on. Oh and it means that they are only single acting and no vent to be found



Jon

Possible, but it doesnt look like it to me.

Usually, on a displacement cylinder, the cylinder barrel isnt much larger than the rod itself. Because effectively, the force of the cylinder is determined by the diameter of the rod, so there is no need to have a huge barrel for a small rod.

Also, it usually bells out has a bunch of packing and a packing nut on the rod side. I dont see ther either.

Best example is a snowplow angle cylinder. And these cylinders ALSO have to work in conjunction with another displacement cylinder.

 

[wdchyd]

G'day i would say that it is a displacement cyl which means it will push out. It has no piston usually just a big circlip to stop the rod from coming out, they work on the principle of that as you force the fliud in the rod pushes out so there is room for the fluid. They were never as strong as a normal piston type cyl as there is a smaller surface area for the oil to work on. Oh and it means that they are only single acting and no vent to be found



Jon

It IS a single acting pull cyl from a hyd tailgate....NOT a displacement cyl...vent shown in the pic...

I've rebuilt many of these over the last three decades....

It's 4.00" bore with usually a 2.00" rod size.....(sometimes smaller)

Next time you see a tailgate with one cylinder under deck lifting (pulling) you'll understand why they use these......:thumbsup:

 

[MossflowerWoods]

It IS a single acting pull cyl from a hyd tailgate....NOT a displacement cyl...vent shown in the pic...

I've rebuilt many of these over the last three decades....

It's 4.00" bore with usually a 2.00" rod size.....(sometimes smaller)

Next time you see a tailgate with one cylinder under deck lifting (pulling) you'll understand why they use these......:thumbsup:

I am positive you are right.:thumbsup:

Knowing the other stuff this guy left everywhere, I suspect thereis someting wrong with it too! :laughing:

David