B2320 I want to increase the lift capability

   / B2320 I want to increase the lift capability
  • Thread Starter
#21  
First of all, I never told the dealer WHAT capacity I wanted, just that I wanted to know if I could increase it by changing the cylinders. I didn't mention the load I had already lifted. He said I'd blow the pump so I asked if I could change the pump too, and he said that is the only pump they make for that machine. He said you can get anything you want from a hydraulics place but kubota can't and won't do it.
Second, the logs I might have to move from time to time I would mill as I have a poor man's version of the wood mizer made by lumber smith. If the trees are any good, not rotted or diseased, I want the longest timbers or boards possible.
Finally, I just put a skid steer adapter on the tractor to attach a tree scoop for a couple dozen of my young trees needing to be moved. The attachment plus the weight of the adaptor probably exceeds that of the bucket. So I lose some lift capacity. Kubota lied to me about the adapter. All the following occurred on the phone. They told me they didn't make the adapter for the B2320, they changed and redesigned the B2320 and called it B2301 and IT has the skid steer quick connect but it wouldn't fit my tractor. I told them someone on tractorbynet told me the B26xx with the LA504 loader has the same dimensions as mine but they said no. I told them I think my information is good and I was looking at a picture of the SSQA. He still wanted to deny it but I convinced him to measure from pin center to pin center and told him I had necessary measurements like from center of tilt piston to center of other tilt piston so he goes out and measures from edge of tee on cylinder to edge of tee on other tee. Know I know he being kind of a d--k but I let it pass as I had written down enough measurements to extrapolate the measurement from the points he measured at and turns out the loader they told me wasn't available for my tractor in 2010 does in fact have the right dimensions for the ssqa to fit. Then I was looking in my kubota manuals for info on the hydraulics, any specs that might be helpful for the load increase like what cylinders are on the machine and I happen to catch a line in the front loader assembly book that says the following instructions are for the optional LA504 loader, the same friggin one they told me that didn't exist when I bought my tractor new in 2020 which was also when they could have sold me the ssqa and the LA504 instead of trying to screw me out of more money further down the road when I needed a skid steer attachment. I won't spend any big money with them anymore. I don't like even the slightest hint of greed in business owners and the people I dealt with are the family owners of the dealership. They do good work but they screwed me. I'm poor and can't afford to fill the pockets of people who own multi million dollar businesses.
 
   / B2320 I want to increase the lift capability #22  
Your poor. Ok. Why not sell your late model 2320 and buy a 15 year old farm tractor that can lift 1400 pounds if that is what you need to do.
 
   / B2320 I want to increase the lift capability
  • Thread Starter
#23  
Thanks for all your help GP, I'm truly in awe of your willingness to share relevant information.
 
   / B2320 I want to increase the lift capability #25  
Seems like your looking at a lot of information that is either inaccurate or you're misinterpreting it.
The la304 is the only loader that Kubota approved for the B2320, doesn't mean others might fit, just means if you're buying it from a dealer together then that's the loader you're supposed to get or else the dealer could be liable for damage etc.

The la504 is the factory loader for the B3200 and B3300su models, these are much larger frame tractors then the B2320 and was never an option for the B2x20 series.

In 2010 there wasn't a ssqa adaptor listed from the factory for the LA 304, there were aftermarket one and adaptors to that used a pin type quick attach system.

Your your la304 boom cylinders are 1.57" bore x 13.2". The LA364 boom cylinders are 1.77x13.7, not sure if they would fit.

You were able to lift that heavy concrete block because you were most likely low enough to the ground that it was still in the breakout force in the lift arc, that area has a higher capacity, the lift capacity will decrease the higher you lift due to the loader geometry.

As to increasing your lift capacity, you can possible put a LA364 on the b2320 but that would be pricy.
The factory relief should be set to 2000psi, check your pressure and if you'd like, set it to 2200 (10% increase is the highest I would go).

I understand the desire to get more lift, however pushing too hard will result in some expensive repairs.
 
   / B2320 I want to increase the lift capability
  • Thread Starter
#26  
TMGT, thanks for the courteous response. I appreciate civility instead of combativeness. I'm not an expert on all things tractor but I know enough to get myself in trouble. I used to be a stubborn mule about asking for help, now I'm a stubborn mule who asks for help.
All that being said......I will try to attach a couple photos of certain information from my 2010 B2320 Tractor owners manual and L304 assembly instructions manual. These photos should clear up why I mentioned the LA504. Also, so far about 15 people have responded with the suggestion you made about resetting the pressure relief but no one has given instructions beyond saying something about adding #10 washers. I'm reasonably sure I can find the pressure relief valve and I know what #10 washers are but unless it is so obvious as to where the washers go or any other adjustments to be made, I just hoped someone would explain and/or post a photo of the valve with where to place the washers and where to adjust if its some nut adjuster or whatever unless the washer goes where the nut adjuster is. Maybe they could point at it in the photo. Nobody has posted photos unless I missed the post.
2016-04-11 08.10.33.jpg
IMG_1087.JPG
 
   / B2320 I want to increase the lift capability #27  
TMGT, thanks for the courteous response. I appreciate civility instead of combativeness. I'm not an expert on all things tractor but I know enough to get myself in trouble. I used to be a stubborn mule about asking for help, now I'm a stubborn mule who asks for help.
All that being said......I will try to attach a couple photos of certain information from my 2010 B2320 Tractor owners manual and L304 assembly instructions manual. These photos should clear up why I mentioned the LA504. Also, so far about 15 people have responded with the suggestion you made about resetting the pressure relief but no one has given instructions beyond saying something about adding #10 washers. I'm reasonably sure I can find the pressure relief valve and I know what #10 washers are but unless it is so obvious as to where the washers go or any other adjustments to be made, I just hoped someone would explain and/or post a photo of the valve with where to place the washers and where to adjust if its some nut adjuster or whatever unless the washer goes where the nut adjuster is. Maybe they could point at it in the photo. Nobody has posted photos unless I missed the post.
View attachment 464294
View attachment 464295

To see discussions on the pressure check procedure just type in, kubota pressure change , in your search engine and you will find many references including a bunch of links to TBN on past discussions/instructions on the topic. I also attached a link to a kit for the Kubota B tractors to accomplish the task. In any event good luck in your efforts.

Hydraulic Pressure Tester
 
   / B2320 I want to increase the lift capability
  • Thread Starter
#28  
Thank you very much Tompet, perfect helpful reply!
 
   / B2320 I want to increase the lift capability
  • Thread Starter
#29  
I thought I said piston diameter, sorry if I typed otherwise. I thought piston diameter would be enough info
 
   / B2320 I want to increase the lift capability
  • Thread Starter
#31  
I had googled "kubota B2320 hydraulic pressure relief valve " and looked for what link looked correct but there was nothing specific to the B2320. Maybe I had a brain fart and missed it, I've been known to do that.
 
   / B2320 I want to increase the lift capability #32  
I have a b2620 with the same manuals, some of the writing is generic between the models, the way I read that is the forks are an option on the la504, not that it was an option for the tractor.

I've found the manuals are lacking a bit in translation at times and there can be references to equipment that's not for your tractor in the manual.

As for the relief adjustment, step one is get a 3-4000 psi gauge, and some fittings so you can attach it to one of the lines for the loader (I can't remember the exact fittings needed) or buy the kit from someone, I believe bxpanded sells one that'll work.
The relief is located on the loader valve under the right side of the floor pan, there is a hex nut cap that hangs down that needs to be removed and the relieve valve, spring and shims will be inside.

You will lose a little fluid and in my case the valve decided to slide out shortly after I removed the cap so I would suggest a catch pan and somthing like a paint filter in case any of the shims try to escape (happened to me).

You can use washers or you can buy shims from mcmastercarr, kubota, or bxpanded I believe. I made my own on my lathe.

I don't have any pictures but can try to take some next time I have the tractor out. There is some good info online and a chart for what thickness shims will increase the pressure a certain amount.

I finally adjusted mine last year, was a little low but not much, I searched on the subject and it was pretty straightforward, but I also have some background in mechanics and hydraulics.
 
   / B2320 I want to increase the lift capability #33  
The b2620 and 2920 will be the same for the relief
 
   / B2320 I want to increase the lift capability #34  
Even if you get more lift from your loader, you may not like the result:

This L4330 experience is anecdotal but a neighbor wanted me to move some pallets of cement blocks to the other side of his reasonably smooth yard. My tractor wouldn't pick up a full pallet so we took a block or two off the pallet at a time until the loader could lift it. In other words, we were at the exact limit of the loader, and probably higher than their published specifications.

For ballast, I had a 6 ft rotary cutter on the back, my heaviest and longest implement. Still, driving those partial pallets across his yard was squirrelly. Turning made it even worse. Rough ground would have made us off load more block.

My theory- the rear cutter addressed mostly front to back weight distribution, but didn't affect side to side stability so much. Side to side oscillation from bare ground, or even from the coarse tire tread on pavement, is unavoidable. And the side to side pivot on the from axle setup means that until the tractor tips enough to hit the pivot stop, you're sitting on a tricycle.

So, short story long, the manufacturers have a reason for their designs, other than saving a few bucks on "undersized" cylinders.
 
   / B2320 I want to increase the lift capability #35  
... As for the relief adjustment, step one is get a 3-4000 psi gauge, and some fittings ...
To make it perfectly clear to the OP what you meant, you are suggesting getting:

1. a 0 - 3000 psi gauge, or

2. a 0 - 4000 psi gauge

Correct ?
 
   / B2320 I want to increase the lift capability #36  
Regarding shims:

Just buy the correct shims from Kubota, they are cheap.

$10 should get you an assortment of 0.1, 0.2, and 0.4 shims ...
 
   / B2320 I want to increase the lift capability #37  
Correct, working off my phone, sometimes my brain works faster then my fingers.
 
   / B2320 I want to increase the lift capability #38  
Dealer told me that because he wanted to sell me a whole new tractor with more capabilities! Greed is a nasty thing. Did you catch the edit I did to the post? Do you know if there is a nomenclature plate for the transmission serial number?

He will be selling you that new tractor, after you modify and tear up your B2320. And possibly hurt yourself.
Then we'll see more of those "Kubota's are junk" posts when you break it.
 
   / B2320 I want to increase the lift capability
  • Thread Starter
#39  
Kubotas are great even if I break it and/or hurt myself. B2320 has exceeded it's capabilities including handling a homemade 17 foot tall crane built onto a 3-point carry-all attachment weighing about 700 pounds to raise 900 pounds of timbers for a timber frame porch and lifting the 400 pound 28 foot trusses over the 11 foot tall timber frame. The 3-point still operated lifting to its max elevation while lifting these loads. No complaints about the machines, just the salesmanship.
 
   / B2320 I want to increase the lift capability #40  
Interesting read.

Get a gauge and check pressure.

Dont exceed 10% above factory spec. Noticeable difference will depend on what the pressure is currently.

Larger cylinders.....dont do it. On older ag equipment, you could get away with more as they were overbuilt by a larger margin. This modern stuff, especially in the smaller tractors, are designed so there isnt a pound of steel where it isnt needed. They are engineered to be light, while still being strong enough. Not as much room for error.

As already mentioned, the lift spec is to full height. The arc that the loader arms travel in make it do lift capacity diminishes the higher you go. So down low, I have no doubt you lifted close to double the spec. I have done so on mine as well. Dont mean its underrated or anything. just how things work. So your loader can "spec" at 660 to max height, means it can lift ~1000# at ground level. You go jacking with cylinders so you can lift more, like 1000# to full height......thats probably not gonna break anything. But it does mean that you can now lift maybe 1800# at ground level. And THAT will break things.
 

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