How soon is soon enough for Super UDT2 in Front Axle ?

JBF43

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2006 Kubota L3130
I'd switch the front axle to a compatible gear oil. Gear oil has more anti wear additives. Manufacturers use tractor fluid because it's simpler for them.
the manual for my L3130, (2006) says you can use the Kubota UDT or SUPER UDT fluid OR 80- SAE 90 gear oil. Possibly given the age of my tractor, front axle case lubricants may differ.
 

Smokeydog

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The first 400hr oil change of the B26 front axle was surprisingly dark. Changed to Lucas synthetic 75-90 gear lube. 5qt capacity. Stays in 4wd almost always.
 

ljjhouser

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Update of my other post. After being curious and draining my axle early 271 hrs. - It was very dark. Got to the dealer today and asked him if that was normal, an answered Usually. I asked about UDT2 in the front axle, he said it has 80-90 sae lube. When I asked about udt2, he said "I wouldn't put that in there. " So I am going with Kubota 80- 90 gear oil.
 

Midniteoyl

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Update of my other post. After being curious and draining my axle early 271 hrs. - It was very dark. Got to the dealer today and asked him if that was normal, an answered Usually. I asked about UDT2 in the front axle, he said it has 80-90 sae lube. When I asked about udt2, he said "I wouldn't put that in there. " So I am going with Kubota 80- 90 gear oil.
Ya, it depends on the dealer for whats in there, but I believe some OEMs fill at the factory in which case it's usually the same oil as the tranny. Mostly if its built/assembled here.
 

ljjhouser

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Kubota front axles are factory filled.
I am inclined to believe that is true. No reason to think otherwise. However, I have a friend who bought an L4701 like mine but from a different dealer. I am not sure how many hours, but I think at about 80 or 100 his front axle failed, both sides. When I asked him about it, he said it was delivered by the dealer with the front axle dry. Gears and bearings on both side were ruined. I don't know how much he use 4wd before that happened. He also said the service person who prepped the tractor was fired. Best Wishes, Larry
 

TMGT

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Kubota front axles are factory filled.
Is that every model or a more recent thing? My B2620 came with gear oil instead of sudt, I doubt the dealer changed out the front axle fluid. I don't get by there often but next time I'll ask them about it.
 

the old grind

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I heard 'factory filled' (twice), didn't catch what with & suspect the more something is 'broke in' the less particular it is about which lube keeps its gears & seals 'wet'. I also consider every oil delivered 'in' as break in-oil and pretty much a flush. Once at 50 hrs, again at 200, etc? (not talking engine oil, btw)
 

RickB

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Is that every model or a more recent thing? My B2620 came with gear oil instead of sudt, I doubt the dealer changed out the front axle fluid. I don't get by there often but next time I'll ask them about it.
All models in my 4 years at the dealership that ended a couple weeks ago. L2501's are partially filled as they are crated with one final drive removed and the axle blanked off.
 

RickB

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I heard 'factory filled' (twice), didn't catch what with & suspect the more something is 'broke in' the less particular it is about which lube keeps its gears & seals 'wet'. I also consider every oil delivered 'in' as break in-oil and pretty much a flush. Once at 50 hrs, again at 200, etc? (not talking engine oil, btw)
There is no recommendation by Kubota to change hydraulic or front axle oils at 50 hours and I don't think there are currently any calling for a change at 200 hours. Owner preferences vary of course.
 

RickB

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I am inclined to believe that is true. No reason to think otherwise. However, I have a friend who bought an L4701 like mine but from a different dealer. I am not sure how many hours, but I think at about 80 or 100 his front axle failed, both sides. When I asked him about it, he said it was delivered by the dealer with the front axle dry. Gears and bearings on both side were ruined. I don't know how much he use 4wd before that happened. He also said the service person who prepped the tractor was fired. Best Wishes, Larry
It is the dealers responsibility to check fluid levels. There are factory screw ups just like there are dealer screw ups. Sometimes they are compounded. Doesn't really matter whether your friend used 4wd or not, the parts were turning and running dry either way.
 

ljjhouser

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There is no recommendation by Kubota to change hydraulic or front axle oils at 50 hours and I don't think there are currently any calling for a change at 200 hours. Owner preferences vary of course.
Yep, that is correct. My manual shows 400 hour hst transmission change and front axle lub change. None before that is shown in the manual.
 

DMW

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Pictures look more like contamination. No source of combustion byproducts, and if it isn't oxidizing from high temps, that leaves water. A bad vent/breather valve can introduce a lot.
 
  
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DonaldP

DonaldP

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I am inclined to believe that is true. No reason to think otherwise. However, I have a friend who bought an L4701 like mine but from a different dealer. I am not sure how many hours, but I think at about 80 or 100 his front axle failed, both sides. When I asked him about it, he said it was delivered by the dealer with the front axle dry. Gears and bearings on both side were ruined. I don't know how much he use 4wd before that happened. He also said the service person who prepped the tractor was fired. Best Wishes, Larry
Truly incredible story of delivery of a tractor without oil in the front end... amazing!
 
  
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DonaldP

DonaldP

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Was there an initial filter change for the HST? Did it also have lots of metal in it?

That front oil does look dark though. Are you always in 4wd?
Only in 4WD when necessary. We have a lawn and tend to like to keep 4wd off unless we need it for other areas of the property. And of course we travel 2 miles on paved roads once a wk or so for mowing. But other than a few issues a week for short term, we are a 2WD family...
 

5030

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I'd switch the front axle to a compatible gear oil. Gear oil has more anti wear additives. Manufacturers use tractor fluid because it's simpler for them.
Other than the factory fill on my Kubota FWA tractors, I never use SUDT in the front axle, always 85-90 GL5 gear oil.
 

ljjhouser

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The more I think about this, the more I think it may be normal for the First axle change. I would be more concerned if it was not the first oil change. When I mentioned it to the dealer, he didn't seem to think it was unusual. Also, Are you sure the front axle had UDT2? Both dealers I talked with stated it is 80-90 in the axle. I even told one that I was going to change the front axle with UDT2, and he said "I wouldn't do that. It comes with 80-90. My axle oil is also black like that. I am at 275 hours. I will take another look at it when I reach 400 hrs. I am inclined to believe that because of the cost of UDT2, the manufacture has a good reason to use 80-90 in all tractors out the door. Best Wishes. Larry
 
 
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