Double acting hydraulic ram query

jay gatsby

We have a rake/tedder with a double acting ram for letting up/down the outside reels and it works perfectly.

However we have an old yard tractor that we could also use to drive it but as far as I know there is no double acting spool setup on this. I know very little about it as you can probably guess.

I'm just wondering if the ram will work with just one pipe plumbed in? Then just leave it in float and drop the reels manually and use the single acting setup to lift them.

Will there be an oil return issue?

Thanks and apologies if this doesn't make sense

pakalasa

Just connect to the A Port (Advance) of the ram. You can just leave the hose of the B Port just free, but if you get any leakage across the internal seal of the ram it will just drain away and waste oil. It might be better then to connect it to a return connection on the tractor. If there is a quick connection on the B hose, this will have a non-return valve and you will have to remove it, to allow the oil to escape freely, if you let it hang free.

jay gatsby

Thanks Pakalasa, that is great, detailed info. It will be working on the newer tractor far more so I don't really want to remove the valve from the connection if possible. I know it's a patch job but for the couple of times it would be used on the old tractor I was just wondering if we could do any damage by just using the one pipe. Looking for the easy way out basically

jimmy G M

How about attaching/welding a hydraulic coupling onto the filling point of the oil resevoir on the tractor. That way you can attach the return pipe onto the tractor and the oil circuit is complete.

jay gatsby

jimmy G M wrote: »

How about attaching/welding a hydraulic coupling onto the filling point of the oil resevoir on the tractor. That way you can attach the return pipe onto the tractor and the oil circuit is complete.

Yeah it would be the right job, have seen a good few of them with this done. Maybe I'll get my ass in gear and do this rather than looking for lazy options.

We have a pipe running from the auxiliary input on the loader controls to the back of the tractor which they used to use for tipping a very light trailer. Could the return be plumbed into this or is it possible to send return oil back this way?

JohnBoy

If the loader is off, or has a third service for the grab that you can disconnect then just get two extension hoses made up to bring the the flow/return from one of the loader spools round to the back of the tractor.

I've seen it done where the farmer had one of these setups mounted at the back
http://www.malpasonline.co.uk/ItemDetails/ItemDetails.aspx?ItemNumber=4411&CookiesEnabled=1

and then two hoses to plug into the third service.

boom, instant double acting spool

reilig

What make and model of tractor is it?

Most older tractors will have a simple plug in the back end which can be removed with an allen key and into which a cheap and normal return pipe will fit. No need to buy expensive lengths of hydraulic hose etc.

jay gatsby

reilig wrote: »

What make and model of tractor is it?

Most older tractors will have a simple plug in the back end which can be removed with an allen key and into which a cheap and normal return pipe will fit. No need to buy expensive lengths of hydraulic hose etc.

Ford 4610 Reilig, can you buy a screw in gizmo that will thread into filler cap hole with a female coupling that you can just plug into?

Would I still need to remove a non return valve from the pipe coming from the machine to get the oil to flow back?

reilig

jay gatsby wrote: »

Ford 4610 Reilig, can you buy a screw in gizmo that will thread into filler cap hole with a female coupling that you can just plug into?

Would I still need to remove a non return valve from the pipe coming from the machine to get the oil to flow back?

That's it. If there is a pipe that comes out of the back end, you screw in the female part and that's your return part.

If there is a non return valve, then you will need to remove it - I doubt if there is one.

Other than that, do what pakalaska said and just use one pipe - remove the second pipe and put a cap on it to prevent leakage.

jay gatsby

reilig wrote: »

That's it. If there is a pipe that comes out of the back end, you screw in the female part and that's your return part.

If there is a non return valve, then you will need to remove it - I doubt if there is one.

Other than that, do what pakalaska said and just use one pipe - remove the second pipe and put a cap on it to prevent leakage.

Thanks Reilig and everyone, couple of different options there which were good to hear about. Now all i need is a week of good weather to hitch it up.

Will definitely get a screw in port though - won't go astray on the tractor anyway.

pakalasa

reilig wrote: »

..Other than that, do what pakalaska said and just use one pipe - remove the second pipe and put a cap on it to prevent leakage.

You can't cap it because air will need to get in and out of the B side, as the cylinder moves up and down. A vent screw in fitting would be the best as it will stop dirt getting into the ram.
Best option though is to connect the B side back to some drain/return on the tractor as it will keep everything clean then.

jay gatsby

pakalasa wrote: »

You can't cap it because air will need to get in and out of the B side, as the cylinder moves up and down. A vent screw in fitting would be the best as it will stop dirt getting into the ram.
Best option though is to connect the B side back to some drain/return on the tractor as it will keep everything clean then.

This is grand, I wasn't sure if the draining back into the tank would work with a double acting ram. I've seen it done with wrappers and that before but didn't know if it was the same principal. thanks

have2flushtwice

anyone hear that joke about whats the difference between a JCB and a giraffe?
a JCB got a hydraulics and a giraffe got a hy ..... i'll get me coat!


has a anyone got a link on how hydraulics work?
there seems to be a lot of questions popping up in relation to these.