Backhoe Backhoe first time!
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rcrcomputing
Platinum Member
Having fun I see..
Good lord you got some rocks. I think your going to need some dynamite!
Good lord you got some rocks. I think your going to need some dynamite!
dfkrug
Super Member
- Joined
- Feb 3, 2004
- Messages
- 7,726
- Location
- Santa Cruz Mtns, CA
- Tractor
- 05 Kioti CK30HST w/ Prairie Dog backhoe, XN08 mini-X
Practice, practice, practice!
Looks like a Chinese LW-7 hoe (maybe labeled Jinma or Giulin?). Is it
working OK?
dfkrug, The backhoe is a: JW03. Working OK! but I just blew a hose. The hydraulic fluid is coming out the bottom took a glance couldn't see it. It is up in side. I'm going to start a thread maybe I can find some one who has replaced that hose. Hope its a hose. Here are a couple shots to show where the fluid is coming from.
Attachments
The fluid is coming out of the bottom of the moving arm. In the book they also call it a:Backhoe boom Assembly. I wonder if I hold the bucket arm up with a ,come a long to a beam,if I can work it on the tractor. I saw it had a small leak when I started, its not small now. Richard
RonMar
Elite Member
Richard
You might not have blown a hose, you might just have a loose fitting. I have the same hoe as you do. These hoes use an "O" ring face seal on the hose ends. One might have worked loose. There are 3 cylinder circuits in the boom. The first is the boom cylinder, the second is the Dipper and the third is the bucket curl. IF the fluid is leaking out of the base of the boom arm, I would guess it is probably from the bucket curl lines. These start at the valve as hoses and run up into the base of the boom. Here the hoses have fittings that connect to hard metal pipes. Up near the top of the boom arm section, the pipes connect back to hoses to pass over the boom-dipper arm pivot. One of these 4 fittings may have come loose. Unfortunatly they are not all that easy to get to. The upper two fittings are not all that bad, but if the bottom two are loose, you may have to stretch the boom all the way out and lay it down on something solid, then remove the boom cylinder fittings and the end pins and lift the boom cylinder up out of the way to get to the bottom bucket curl fittings
The main boom cylinder is the most stressed in the system, lifting all the boom weight and whatever you have put in the bucket. It is also doing this in it's retract mode, which has less available force than in it's extension mode. The pressure doing this heavy work is exposed to the rod seal, and this seal could be failing and allowing fluid to pass along the rod when you lift the boom. This would also leak fluid where you have indicated.
Get in there with a rag and wipe things clean, then fire the unit up and look for fresh fluid. Be sure you wear eye protection. Hydraulic fluid has a nasty habit of squirting places you don't want, when you least expect it. Make sure all the weight is off the parts and all the valve controls have been cycled to relieve pressure before you go to remove any fittings.
Good luck
You might not have blown a hose, you might just have a loose fitting. I have the same hoe as you do. These hoes use an "O" ring face seal on the hose ends. One might have worked loose. There are 3 cylinder circuits in the boom. The first is the boom cylinder, the second is the Dipper and the third is the bucket curl. IF the fluid is leaking out of the base of the boom arm, I would guess it is probably from the bucket curl lines. These start at the valve as hoses and run up into the base of the boom. Here the hoses have fittings that connect to hard metal pipes. Up near the top of the boom arm section, the pipes connect back to hoses to pass over the boom-dipper arm pivot. One of these 4 fittings may have come loose. Unfortunatly they are not all that easy to get to. The upper two fittings are not all that bad, but if the bottom two are loose, you may have to stretch the boom all the way out and lay it down on something solid, then remove the boom cylinder fittings and the end pins and lift the boom cylinder up out of the way to get to the bottom bucket curl fittings
The main boom cylinder is the most stressed in the system, lifting all the boom weight and whatever you have put in the bucket. It is also doing this in it's retract mode, which has less available force than in it's extension mode. The pressure doing this heavy work is exposed to the rod seal, and this seal could be failing and allowing fluid to pass along the rod when you lift the boom. This would also leak fluid where you have indicated.
Get in there with a rag and wipe things clean, then fire the unit up and look for fresh fluid. Be sure you wear eye protection. Hydraulic fluid has a nasty habit of squirting places you don't want, when you least expect it. Make sure all the weight is off the parts and all the valve controls have been cycled to relieve pressure before you go to remove any fittings.
Good luck
Ron, I just looked at the backhoe, what you described sounds right. I'll bring it around tomorrow and lay it down by the shop. Can't see anything from the outside must be under everything. Thanks for the help I was hoping for someone who has had to get in there to come on. I'll post what I find. Richard
20 20
Elite Member
I also blew a hose leaked in the same place. The hose was rubbing on part of the frame{rough spot}. I replaced the hose and ground off the rough spot. I have also had the swing arms start to losen so watch them.
I did alot of work with the jw3 but if I had to purchase again I'd run like the wind in the other direction from that BH.
I did alot of work with the jw3 but if I had to purchase again I'd run like the wind in the other direction from that BH.
quicksandfarmer
Elite Member
I tried that, the more I dig the more rocks I have, and I end up with more rocks than when I started. I guess I need a bigger hole...
Thats funny! You gave us a good laugh. Yep, I find more rocks also, but not as large. I can move the small ones away. Some of the big big ones are too humungus to move. we are on a mountainside, with the dirt I pull out I'm building a pad next to the barn. On a mountain there is nothing flat unless you make it so. Wife and I dug and leveled for the barn last year, on the uphill side of the barn the earth and rocks are three feet up the side, when the snow slides off the roof that side was closed off until Spring.
20 20
Elite Member
I use the bigger rocks as boundry markers, around ponds, drive way e.t.c. I've also seen on craigs list were folks are selling rocks??????????? You may have a fortune in them thar hills?
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