Need some backhoe hydraulic help

[echo8287]

I have a 2155 John Deere with a loader and a #10 backhoe. It is a 1990 model. I had not used the backhoe in several years(5) and needed it one day. Hooked it up to the tractor and it immediately blew a couple of hoses. All the hoses looked bad as they are 31 years old. I changed those and it blew a couple of more. So about $1000 later I have changed ALL the hoses(on the loader too).Checked fluid and filled. Cranked it up loader works fine, up/down,bucket tilts.So I start working the backhoe and nothing works. Some cylinders try to work but barely do. I hooked and unhooked the quick connects about 5 or 6 times mashed the check balls in them. Most worked easy but a couple are hard. I thought I might have hooked the IN/OUT on the backhoe backwards. I went to an AG Pro and they said I had it hooked up right but did not seem real sure. I looked in an online 10 backhoe manual and it looks like I have it hooked up as in a picture on there. I was wondering if I swap the in and out will it be a problem or damage something? I asked the guy at Ag Pro if I needed to bleed something and he said no. Anyone know if the 10 backhoe is an open center or closed center system? Any thing else I can check,
Thanks for any enlightenment,Dave

 

[nyone]

Do you need to turn/move a bypass valve to flow fluid to your backhoe?

 

[echo8287]

I have no bypass valve. Only thing that I can figure that could be wrong is> I changed the larger hoses that feed the backhoe>the IN and Out on the manifold. I marked the hoses when I took them to the place that makes the hoses for me. When I got them back they were not marked and the quick connects were installed.That's when I called Ag Pro and started looking online for the correct connections. If I swap them can I damage anything? I read online that 2150 and 2350 models are like this photo.

 

[nyone]

You sure you dont need to move a lever next to the 3pt lift or something to supply pressure back there?

 

[echo8287]

I found a picture of the supply and return on the internet> I have triple checked it and the hoses are hooked up right. Now I am thinking it's one of the quick connects. 3 of them operate easy and one is hard(female one)does that sound about par for the course? No bad comment! Anybody have the quick connects go bad?

 

[echo8287]

I'll go check, but in the past I don't remember switching anything, but I could be a dumb ass and that lever might have got moved>it's possible. Thanks for pointing that out!

 

[echo8287]

I checked the lever behind the 3 pt hitch lever. Some kids took it on a joy ride awhile back and I couldn't be sure they didn't move it. I tried it in both directions> no change. It has a notch on the front side,I am pretty sure it's always been at that point.

 

[echo8287]

I want to thank everyone who replied! I finally got it working>I changed the quick connect coulpling and nothing changed the other day. I went out today and the outriggers had tightened up and the boom had moved slightly> while it was sitting overnight. I talked with 2 other tractor mechanics and one said there is air in all the lines and the rebuilt cylinders> must bleed all the cylinders. The other guy said what some others said they are self bleeding and it should take to long working them to get the air out. This fellow said it sounds as if you have it hooked up right BUT swap the hoses and see what happens. I swapped them and it everything started working!!! He said a few of the check valves on a circuit were probably leaking and thats why a few cylinders would move ever so slightly.Thanks to all and maybe this can help someone else!!!