Ford 757B BH Install on a Ford 1720

[Stangusso]

I am a new member to the forum, and a novice with hydraulics. I own a 1989 Ford 1720 with FEL, 3PH post hole digger, and rear plow. The tractor has factory installed rear hydraulics consisting of two female quick connects. I believe these lines are run by a lever next to the 3ph hydraulic lever. The lever running these lines has the ability to lock in one open position.

I just purchased a used Ford 757B backhoe of roughly the same year. The backhoe has 1/2" male QC's on 1/2" lines...Too large to plug into the female QC's on the tractor.

My questions...

1. Can I change the qc fitting on one of the tractor's rear lines to feed the backhoe?

2. If I can use the tractor's rear line, do I have to run the return line from the BH to someplace else on the tractor? If so, where?

3. If the rear hydraulics on the tractor are not suitable to run the backhoe, where exactly do I run lines from and to? Is there a video or diagram someplace? I'm not terribly familiar with the hydraulic layout under my machine...

Thanks in advance for any help.

 

[tawilson]

You should be able to plug the lines on the backhoe into the rear remotes, lock the lever down and go to work.

 

[TMGT]

How many hoses are coming off the BH?

 

[Stangusso]

There are two 1/2" hoses coming off the backhoe. One of them is labeled "outlet".

 

[TMGT]

All you need to do is figure out which outlet on the tractor provides pressure when in the detent position and hook the pressure hose to that and the "outlet" hose to the other connection on the remote.

 

[tawilson]

I have a 2120 and a 758c bh. Should be the same set up. I think all my connectors are 3/8" but I could be wrong. Probably be best to change the smaller ones out to match the bh. I also think your outlet should go to the lower one on the tractor. If not you will know. Controlls will be kerfluey. Just swap them and mark with a zip tie so you'll know next time.

 

[Stangusso]

So I won't damage anything if I get the hoses backwards?

 

[TMGT]

It could damage the control valve, as was suggested, run a zip tie on one side of the hoses, this is how I do it on my connections where I need to keep the direction the same.

 

[Stangusso]

Is there any way to tell which is which by tracing the lines back?

 

[tawilson]

I was sure I had accidentally done it before but just to be sure I just switched mine and all that happens is nothing works. Just bump the outriggers. If nothing happens swap them. Looking at mine for you made me discover a little leak on my 3 way remote chingadara. Thank you.