The manual I downloaded from Kubotabooks.com is identical in regards to oil standards posted and shows a print date of 2009. I can only surmise that Kubota has not updated their literature to reflect their latest standards. The industry standard has moved from printed media to digital so it is understandable that printed literature is often not up to date.
Manuals for the L2501 and the BH 77(No loaded rear tires with the BH 77 and no CJ-4 engine oil)
- Thread starter springer3
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whitetiger
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Kubota tech..BX2370, RCK60, B7100HST, RTV900 w plow, Ford 1100 FWA
The point is, you have posted an RTV900 manual, GeoHorn and I posted an RTV-X900 manual. The X series manual was not written until 2019 as it is a new model and very different than the RTV900 series.
Yes but if you compare both manuals the information is identical as in they just copied the manual over to the TRV-X900. This with the footnote from the KubotaUSA website indicates that information is out of date. It is not uncommon for printed material to be old and out of date like this. We use Kubota engines in some of our machines and all of those are filled with and recommended to use CK-4 oil. This is with the consent of Kubota.
No..NOT from 2009. It’s the manual for my 2014 RTV (Copyright date 2013)
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nbryan
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Equipment
B2650 BH77 LA534 54" ssqa Forks B2782B BB1560 Woods M5-4 MaxxHaul 50039
About the backhoe with/without loaded tires issue. I have not heard any comments about the weight of the backhoe plus the tire fill fluid would potentially be very unhealthy/unsteady/unsafe for the backhoe stabilizers to carry while under backhoe operational stresses. The stabilizers are there to take most of the weight off of the rear tires, no? Loaded tires are probably too much for them.
kubotafreak
Well-known member
Equipment
GRAND l6060, L3560, B6100, gr2100, tg 1860, g1800, g1900, g2160
nbryan,
You are absolutely right about the stabilizers carrying most of the weight in use, and are more than capable to do so. From a design spec, nobody is going to put their business liability on the machine if the tires cannot fulfill all loaded situations per the tire manufacturer. Do we not remember the firestone tires on the explorer? Neither manufacturer wanted to own up that the vehicle as built could not safely meet all loaded conditions. I think everyone gets real world situations and use, but tires by manufacturer recommendations are to be replaced if ever overloaded. The manufacturer has the duty to keep you, the consumer out of that situation. That is why I suggested someone reporting in the sidewall load ratings of the tires in question to see if the limiting issue was actually the tires or another dynamic situation the tractor might be in(travel/ability to upset). It serves the manufacturer well to keep you the consumer in the dark when design limits are near their upper limits. Which I think is the OP's real question, of why.
You are absolutely right about the stabilizers carrying most of the weight in use, and are more than capable to do so. From a design spec, nobody is going to put their business liability on the machine if the tires cannot fulfill all loaded situations per the tire manufacturer. Do we not remember the firestone tires on the explorer? Neither manufacturer wanted to own up that the vehicle as built could not safely meet all loaded conditions. I think everyone gets real world situations and use, but tires by manufacturer recommendations are to be replaced if ever overloaded. The manufacturer has the duty to keep you, the consumer out of that situation. That is why I suggested someone reporting in the sidewall load ratings of the tires in question to see if the limiting issue was actually the tires or another dynamic situation the tractor might be in(travel/ability to upset). It serves the manufacturer well to keep you the consumer in the dark when design limits are near their upper limits. Which I think is the OP's real question, of why.
Your hoe has enough weight to ballast your tractor.I have L4701 with BH 92 hoe est weight 2k.I didn’t load my tires when I’m in yard less rutting if ground is wet I need to do a chore if it’s saturated I obviously wait if I can !!! I went with ballast box 1700 lbs when my hoe is removed and I have heavy FEL task to do.I like tractor lite in the rear doing work near house and yard where I mow with zero turn.This obviously my personal preference add weight when needed !!! Kubota may think on your machine loaded tires and hoe pushing rear limits ??As for oil I would think you could use it non DPF I’m using Kubota 10-30w synthetic what came from factory I grew up with 15-40w always in diesel but times are changing !!!
Those statements seem completely contradictory to me. If the mfr’r has an obligation for safety reasons..... then it would be in the BEST interests of the mfr’r to make certain the operator knows those limitations.... NOT to keep the operator “in the dark”.
kubotafreak
Well-known member
Equipment
GRAND l6060, L3560, B6100, gr2100, tg 1860, g1800, g1900, g2160
I said it serves them well... do you think they are going to tell you when their is a design issue on small scale? Look at most TSB's, most are kept at dealer level, and only get fixed if the consumer complains about the issue. So for this situation of say a backhoe combined with weights or ballast tires overloading this specific machine in some way for the small percentage of buyers, it is easier for them to be elusive on the info. We all know how descriptive lawyers can make things, so there is no grey area when they want to. When a manufacturer makes a point to warn you but not give a reason, they are protecting themselves. Them being vague is for them. Nothing against any manufacturer, they all do this. Ill give Kubota props, because at least they disclaim a possible issue. They could have said nothing, and this conversation would have never happened because the OP wouldn't have read it. If you designed tractors would you describe to a would be consumer all the areas you found in R&D that could be an issue? Especially if the issue only occurred when you equipped the machine in a 2% configuration with no guarantee of injury or failure. No you wouldn't, your marketability would be poor. The consumers place the liability to disclose on the manufactures. The manufacturers will still chose to protect themselves in smaller margins of error. They are meeting this liability by disclosing a non compatibility, they don't have to describe why.
If a problem only exists in 2% of configurations...then as a mfr’r I would be Especially motivated to caution against that configurtion.... because it would represent only a minor portion of total sales.... but the backlash from nondisclosure could cost me Million$. It would be better to tell my customers NOT to do that than to try to defend myself in-court as to why I never mentioned the potential problem in tons of promotional literature.
My viewpoint might stem from my career, in which operating limitations are especially important for the operator to know, and for-which we were incessantly trained and re-trained. (aircraft operations.)
kubotafreak
Well-known member
Equipment
GRAND l6060, L3560, B6100, gr2100, tg 1860, g1800, g1900, g2160
Most of us would all like to think money took a back seat to someone's safety.
If you were military with aircraft, you know money is rarely a deciding factor...
If you were military with aircraft, you know money is rarely a deciding factor...
Yes, ...money applies most places....(although I can appreciate the results..... I roll my eyes and shake my head at those who will buy a military aircraft that national gov’ts have declared obsolete and financially unsupportable.... and think it reasonable that THEY can “restore” it as a ”hobby”.) LOL
whitetiger
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Kubota tech..BX2370, RCK60, B7100HST, RTV900 w plow, Ford 1100 FWA
That's where I was at, but after the stabilizers were mentioned it sure would be nice to know if that is another limiting factor.
I have washer fluid loaded-rear R4s and been using the BH77 heavily over three years. I don’t usually have a need to raise the rears completely off the ground, only in just a handful of situations where one side comes up so I can get level again. And in those cases, I’ve never had any issue with the one stabilizer that had its side up in the air. I keep ‘em tied off when the backhoe sits on my dolly, but really personally haven’t noted much in the way of leak down of the stabilizers when it’s sitting around.