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I find it fascinating that apparently Kubota's fluids don't fully meet that spec. Comparing your chart to the published physical properties that I was able to find online, the viscosity of SUDT-2 @ 100°C spec is >=8.8cSt but the published value is 8.1cSt. The viscosity of UDT @ 40°C is...

You are correct that the requirements for an HST system are less than required of a gear drive tractor. And virtually any fluid can act as a hydraulic fluid insofar as being incompressible and pumpable. Not all fluids are compatible with all seal materials and some fluids are better lubricants...

Ah, but I didn't claim it would meet GL4 -- just that it would have the right viscosity at that one specific temperature. Even plain water is a "hydraulic fluid", right? ;) I don't really disagree with anything you've said. I'm sure there are dozens of third-party fluids that would work just as...

With respect, I don't believe it is picking nits. To quote the Standards Division with the North Carolina Department of Agriculture and Consumer Services, “the lack of any specifications does not provide the purchaser with information for its intended use, nor the ability to test the product...

No it doesn't. Read it again. I bet it says something like "Suitable for use in..." Kubota does not "approve" any fluid but their own, and they are pretty secretive about their specifications so other manufacturers can't even claim their products "meet Kubota specifications".

The Canadian "Premium UDT" and the US "SUDT" or "SUDT-2" are completely different fluids. Premium UDT is a conventional low viscosity mineral oil based fluid made by Shell Canada for Kubota Canada. That is straight from the MSDS. Oddly, despite the fact it is a conventional oil, the pour point...

This thread just won't die!! All I can say is that those who don't understand buying something without tangibly examining it first are obviously too young to remember the days of mail order catalogs, but too old to use Amazon.

Steve,- "PM" means Private Message. I'll respond to you via PM in case you are unsure how to start that. I highly recommend you edit the above post and delete your personal information. Too many spiders are crawling the web looking for personal information to steal!

Yes. I have a couple available right now. Send me a PM with your shipping address for quote on shipping.

Two possibilities come to mind: 1. A confusion in translation. Japanese engineer said "tire ballast is not required if you have a BH". English technical writer heard "don't add tire ballast if you have a BH". 2. The additional weight of tire ballast puts undue strain on the outriggers or...

Actually Dave, looking at his photo, that's the original cover. His loader is probably powered off a self-contained system and stand-alone pump, possibly driven off the front of the engine. You are correct, I do make the replacement cover for the block that permits powering a loader off the...

It depends on the steel. While galvanic corrosion can be a problem in some circumstances, the OEM cover is aluminium so we're not really changing the dynamic here. Since the whole assembly hangs off the side, there's no immersion in an electrolyte for any length of time. Other examples abound...

I have completed enough blocks to fulfill the backlog of requests and sent a PM to each person who I have record of requesting one. Check your PMs. If I missed you, contact me ASAP. As noted in the message I sent out, I will honour the price previously listed. However, the cost of aluminium...

It doesn't work that way on a Kubota. You can only use one pair of ports. All others must be plugged. Any power steering set up would have to have a priority valve as the first thing in the chain to handle portioning of the fluid flow.

Ok, I know what a submarine sandwich is -- or at least, I thought I did. But I'm struggling with MTO. What does the Ministry of Transportation of Ontario have to do with submarine sandwiches? <lol>

I spent several hours today trying to catch up to the demand. As Dan pointed out, swapping the setup around to accommodate 6 ports drags out the process. Especially the single port on each end. Thinking on it, and reviewing this thread, does anybody actually need the ports on the two ends...

Yes. You might need to lift the arms by hand a bit to make the connection, but they should not be raising the backhoe. That is all spelled out in the manual I linked to, above. Pages 10 to 13 give pretty detailed instructions on attaching the backhoe to the tractor. It does mention needing a...

How are your metal fabrication skills and facilities? You don't necessarily have to buy Kubota's subframe if you can weld up a functional equivalent. That's what I did when I built my FEL. The subframe is merely some heavy metal reinforcements running under the tractor. I suspect that you do...

Thanks, but Kubota did most of the writing. I was mostly posting limited excerpts for educational purposes and private study. ;-)

One last thing: the B4672 has an additional brace, not included with your backhoe, that further limits stresses on the 3ph. It doesn't actually bolt to the tractor itself, but it does exert leverage on the underside of the lower lift arms when taking the weight of the BH. I wonder if something...