Backhoe Backhoe loader hydraulic for Kubota B2920
- Thread starter Jackdog
- Start date
1stDeuce
Gold Member
I can't help with your Kubota specifically, but I can say that I just hooked a BH to my MF. I used the "Power-Beyond" coming out of the loader valve. Prior to my interrupting it, the P-B went directly to run the 3pt hitch. If yours is plumbed similarly, it works out pretty well, because having the P-B running the BH disables the 3pt, so you can't accidentally run the arms up and damage stuff... No need for 3pt when the BH is there anyway.
So now flow goes from the loader P-B fitting to a hydraulic coupler at the back of the tractor. Without the BH, that couples to another hose that goes forward to the 3pt hitch, right where the P-B output formerly went. Add one more hose with coupler that allows the BH to return straight to the tank (transmission).
When you hook up the BH, you couple the return hoses, and uncouple the P-B hose from the 3pt hose and couple it to the BH pressure side.
I recommend using one size larger than factory for the pressure to BH hose, as well as the return hose for best flow, which will help the BH move faster by providing slightly less restriction, and hence better flow. The 3pt hose can be standard size and it'll be fine, since you're not really concerned with speed on the 3pt, nor working it hard.
Hope this makes sense... There are a few pictures in my tractor thread if you need some more visuals.
So now flow goes from the loader P-B fitting to a hydraulic coupler at the back of the tractor. Without the BH, that couples to another hose that goes forward to the 3pt hitch, right where the P-B output formerly went. Add one more hose with coupler that allows the BH to return straight to the tank (transmission).
When you hook up the BH, you couple the return hoses, and uncouple the P-B hose from the 3pt hose and couple it to the BH pressure side.
I recommend using one size larger than factory for the pressure to BH hose, as well as the return hose for best flow, which will help the BH move faster by providing slightly less restriction, and hence better flow. The 3pt hose can be standard size and it'll be fine, since you're not really concerned with speed on the 3pt, nor working it hard.
Hope this makes sense... There are a few pictures in my tractor thread if you need some more visuals.
GPintheMitten
Elite Member
- Joined
- Sep 8, 2009
- Messages
- 3,336
- Location
- Flushing, Michigan
- Tractor
- Kubota B2620 with BH65 backhoe, Ford 2N
I put a backhoe on my Kubota B2620. I've been searching for my thread on the plumbing. Can't find it. I bought some fittings from Kubota and had hoses made locally.
I'll keep looking for specifics.
I'll keep looking for specifics.
GPintheMitten
Elite Member
- Joined
- Sep 8, 2009
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- 3,336
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- Flushing, Michigan
- Tractor
- Kubota B2620 with BH65 backhoe, Ford 2N
This thread should help but it doesn't have all the details. I'll keep looking.
http://www.tractorbynet.com/forums/...b2920-power-beyond-port.html?referrerid=80409
http://www.tractorbynet.com/forums/...b2920-power-beyond-port.html?referrerid=80409
GPintheMitten
Elite Member
- Joined
- Sep 8, 2009
- Messages
- 3,336
- Location
- Flushing, Michigan
- Tractor
- Kubota B2620 with BH65 backhoe, Ford 2N
http://www.tractorbynet.com/forums/...b2920-power-beyond-port.html?referrerid=80409
In this thread is shown how to do it. Kubota sells a kit for the hydraulics conversion for the backhoe. I went to the Kubota dealer. Had them bring up the parts diagram for that kit. It shows the 2 parts that connect to the Kubota loader valve. I bought those 2 fittings and a pair of quick disconnects to.match the disconnects on the backhoe then had hosesa decent up locally.
When there is no backhoe on, you connect the them together.
With the backhoe on, leave the 3 pt lever down or it could damage something in the hydraulics.
In this thread is shown how to do it. Kubota sells a kit for the hydraulics conversion for the backhoe. I went to the Kubota dealer. Had them bring up the parts diagram for that kit. It shows the 2 parts that connect to the Kubota loader valve. I bought those 2 fittings and a pair of quick disconnects to.match the disconnects on the backhoe then had hosesa decent up locally.
When there is no backhoe on, you connect the them together.
With the backhoe on, leave the 3 pt lever down or it could damage something in the hydraulics.
1stDeuce
Gold Member
MF may have had a "kit" at one time, but I don't think it was still available, or it was fairly expensive... I just ordered everything I thought I would need from Surplus Center. I bought the breakaway style quick connects locally, and also some fittings, as I messed up some of the sizing to the loader valve and tractor pump output. (Went by the 3/8" hose size as the size of the SAE fittings, and they were much larger...)
If you are going to order what you need, do take the fittings off the loader and tractor and make sure you're actually getting the correct size... I also try to make all the hoses use female JIC at both ends, and adapters to go to 0-ring or pipe if needed. Almost any place can make a JIC ended hose, but few places around here carry the O-ring (ORB or SAE) hose fittings.
I did use pipe on the return hose, since the tractor and the coupler were pipe, so it made sense there. I doubt that hose will ever fail, and pipe is pretty common too.
The Kubota kit may come with some nice hose mounts though... I have to make some for mine once I get the tractor side of the BH mount on so I can see where they should go for ease of hookup.
TMGT
Elite Member
I can tell you all the fitting sizes etc. No need to get anything from Kubota.
GPintheMitten
Elite Member
- Joined
- Sep 8, 2009
- Messages
- 3,336
- Location
- Flushing, Michigan
- Tractor
- Kubota B2620 with BH65 backhoe, Ford 2N
TMGT knows this stuff better than I do. Follow any advice he offers.
TMGT
Elite Member
Lol thanks GP, I'm in the middle of a leaf job now but when I get back home I'll post up what I have.