4520B Backhoe

calaggie

New member
Oct 16, 2018
1
0
0
California
I've got a 4520B backhoe that I'm trying to mount up to my B1750 HST. The subframe it came with is a B4526, but I'm not sure this is the correct one for my tractor. I don't see where the bracket that attaches to the tractor (about in the middle, near the mid PTO shaft) is supposed to go.

Does anyone know what the correct subframe to use is and / or have the manual?
 

kubotasam

Well-known member

Equipment
B2410, B7100dt, B7500,Woods BH750,Landpride 2660RFM, Tiller, B2781 Snowblower
Apr 26, 2010
1,200
125
63
Alfred Maine
I have a PDF version of the parts list. It shows 5 or 6 different subframes that came with the backhoes. It does not show what tractor the different subframes are designed to fit. You can see basically the same thing on the Kubota parts website. If you want a copy of the parts manual send me a PM with your email address and I can send you the PDF.
 

shootem604

Member
Lifetime Member

Equipment
L245DT with Kubota (Arps Model 22) FEL and Kubota B/L4520B (Woods 650) BH
Apr 23, 2018
875
18
18
British Columbia
I have the same backhoe in 3 point hitch configuration. If you can't figure things out with the subframe and you need to use it, the 3 point hitch is an option. I've put together a reinforced toplink with a cross brace to prevent it from lifting during digging and to spread the forces to prevent damage to the tractor.
 

Curt B

New member

Equipment
B1750 HST
Aug 20, 2019
11
0
1
Chesterland, OH
If possible I would like to see what you what you did for reinforcement on the toplink. I am planning on finding a backhoe for my B1750hst and am having trouble locating the correct subframe and BL4520 backhoe. As much as I would like a frame mount I probably will end up with a 3 point. It's mainly for my personal home use and should not be any heavy duty radical digging.
 

shootem604

Member
Lifetime Member

Equipment
L245DT with Kubota (Arps Model 22) FEL and Kubota B/L4520B (Woods 650) BH
Apr 23, 2018
875
18
18
British Columbia
It's like the reinforcing bracket made for use with the later Lseries and backhoe - remove the PTO guard, toplink brackets, and seat. A long piece of plate with holes that line up with the existing ties together the whole rear and the guard and brackets and seat bolt back on over top. Use in conjunction with a safety lock type system where braces from a custom toplink to the lower backhoe frame. Very solid. I will take some pics some time.
 

Curt B

New member

Equipment
B1750 HST
Aug 20, 2019
11
0
1
Chesterland, OH
Thank you very much for you reply and info. If you do get the chance and can share the pictures it would be very helpful and appreciated, whenever you get a minute, no rush.
 

shootem604

Member
Lifetime Member

Equipment
L245DT with Kubota (Arps Model 22) FEL and Kubota B/L4520B (Woods 650) BH
Apr 23, 2018
875
18
18
British Columbia
Mine setup is a copy of the Woods SafTLock toplink and braces and a reinforced toplink bracket like the Kubota one. I checked the manual for the 4672 backhoe on kubotabooks.com and it mentions and shows the toplink and braces and also the heavy duty top link bracket for your B1750. I highly recommend you get the following and install ASAP to prevent rear end damage with the backhoe:

HD bracket: 70050-93214 qty 1
Seat spacer: 70050-93682 qty 1
Seat spacer: 70050-93219 qty 2
M10-1.5X40 Bolt: 01053-51040 qty 2

I had to make up the items, you may be able to order from Messicks or your local dealer.

If you are ever looking for parts for this BH and Kubota doesn't have them, note that it is made by Woods and is the Kubota branded version of their 650-2; Messicks is also a Woods parts dealer.