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Hydraulic hose removal

A

anallisguy

Member
The pics are from a Ford backhoe. One of those lines is busted. How on earth do you get a wrench in there
to take the hose off? it needs an 1 and 1/4 wrench. And on top of that if you can get the wrench to fit on the fitting,
there's no room between the boom and the cylinder. Are there special wrenches made for this? or do I need to sacrifice one
of my 1 1/4 open ends and start grinding? thoughts?
cvphoto48190.jpg


cvphoto48191.jpg
 
If I remember, two people made it easier to pull out if it one of those four hoses in there. There is a bracket in there that has to come out (I see two bolts, those might be it?) to make the hose slide to the left or right to get a wrench in there. If it is the middle hose that is busted, the left hose has to loosened and moved out of the way. Same thing for the other side. It is worse with the lines under the operators platform. It is tighter if I remember. I think it was the same thing but no bracket (?). The hose broke for the boom out on our Ford 4500 with 755 hoe.
 
Ive made a lot of custom wrenches over the years. Cut them , heated and bent them, welded different handles on them. Whatever it takes. Sometimes easier to make a custom wrench than disassembling the entire machine to get to the needed spot. Save them once you make them because someday you might find another use for them. I have a drawer full.
I had an old Davis backhoe once that had lines inside the frame like that. I cant tell from your picture how the cylinder attaches. Is there any way to disconnect one or both ends and at least swing it out of the way any?
 
Thes, and others like them are available. Google Hydraulic wrenches. The offset of thenuts up and down the boom may help. As noted, removing the bracket bolta may improve the situation. I have a set of Snap-On wrenches to do it. Jim
Service wrench set.
 
Jim -- thanks for the reply.....the wrenches you linked to are too wide; they would need to be ground down to about 1/8 inch wide,
and I'm not sure how much strength would be left. A mechanic friend has what's in the pic below. I just tried it and the opening is
too narrow to go around the hose. I may buy one and cut the ends off a bit more to make it fit.
cvphoto48198.jpg
 
I have put point on big punch like center punch has and get close to edge of flat to knock loose. I invested in Snap on offset open end wrenches years ago.
 
Yes, I have a set of Snap-On, that is the only brand to buy in my opinion. They have a third angle available. All other angle wrenches have the same angle as your combo wrenches and then the greater angle on the other end. Some day I will measure the angles.
 
Either loosening one of the bolts will let you get in there with a regular wrench or get a crowfoot wrench. I have a set for sizes from 7/16 to 1-1/2 or something like that. Don't use them often but handy when I do. They look about like the one in ANallisguy's reply only they are a regular open end jaws on it.
 
It's not that hard to do. First swing your dipstick all the way out and lower the bucket to the ground. That gives you a lot of working room. Next, loosen the two bolts above the hole. They hold a bracket that holds the tubes in place. Now you can push the tubes apart and get a wrench in there. Take it apart. Get a long piece of mechanics wire or small rope and tie it to the hose. That way when you pull the old hose out, you can tie the rope to the new hose and pull it in.
 
I have done more than one on my Ford 4500. Wrench holds the steel line nut, wide cold chisel on hose nut. I paid someone with a "special wrench" to replace the hose the first time, and it came back with chisel marks on the new hose nut.

Zeke B.
 
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