New Kubota Corrosion

[Mot]

You could try Penetrol. It is like a thin varnish that will give some protection yet not interfere with threads or gum things up like paint. Home Depot has it. It is good for a lot of other things too.

And it goes on like water...

 

[MAarcher]

Check your electrical connections. Maybe a bad connection is causing galvanic corrosion?

 

[Paystar]

I don't know what environment you've run it in, or how you store it, but I can say if I got a new Kubota and it did that, with the price increases they have done over the last two years.....they'd be taking it back.

 

[Dave5]

I really appreciate all the feedback. I use fluid film on my truck as it see road salt, but I wouldn't think I'd need it on the tractor since it stays here. I'll talk with the dealer, but I have little faith. I've only washed with simple car wash, turtle wax brand i think. Most of the fittings didn't get a good scrub, due to there geometry and locations, so I'm thinking these parts we pretty coated from shipment.. and then repeated moisture due to the thaw this spring started reacting with any salt film on the parts. I keep a JD zero turn and a few dirt bikes in the same space.. none have these issues. Here is the flail mower stored in the same exact space... zero corrosion issues on the plated parts. I'll take a look a penetrol.

 

[ernieatv]

Try parking indoors in a heated garage

Look at the condensation on your painted steel...this is an owner issue, not a K issue

Really, are you real ?? Now you're blaming the owner, a tractor is supposed to be made to stay outside, where do you use a tractor? Outside not inside of a heating garage. Where do dealers keep their tractors until they're sold??

 

[Paystar]

Do they use salt on your road and you snow blow end of driveway?

They don't use salt on my road and my Kubota and implements still look like new.

But friends that live in city have lots of rust on their machines of all brands.

 

[Omega Woods]

Do any of your neighbors have Kubota equipment? Any of them seeing the same issues?

 

[DonSJ]

Hello All, I have been reading a learning a ton on this site. Thank you to all who contribute.

I have a 1 year old Kubota 4760, 2022 model delivered in May of 2023. I am appauled by the corrosion on all the silver plated hardware. The tractor has 55 hours on it, and is kept either in my garage or under a 3-sided barn, it does not see the rain/snow. It stays on my property and gets washed a few times a year. I live in southern New Hampshire, not by the beach. It appears that just condensation has corroded every single plated fitting/hardware item. I have a BH92 on this as well, and all the silver connectors, even hose clamps, are corroded. Am I just expecting too much?

Some of the fittings say China right on them. I'm dissapointed and will now go and try to steelwool/oil all the parts, but what a waste of time. Here are pictures of the hydro connections for the FEL, under the cab and for 3rd funtion valve. I took these pictures a few weeks ago, on a warm morning. You can see some droplets from the humid air on the cold metal. Notice on the middle picture on the cab, some connections have zero corrosion, but most have the oxidation. I really expected more for the money spent on this. Any thoughts or insite? Thanks!

View attachment 872942
View attachment 872944

View attachment 872945

Seems to me it’s a problem with the materials used by the company that makes fittings for Kubota (Jis, from what I understand) and ultimately the responsibility of Kubota to make good on it. I would hope that Kubota would stand behind their product.

 

[Dave5]

I don't salt my driveway... and don't currently use the tractor to plow. It sat all winter. I gave the dealer a call and sent them the same photos. We'll see. Looks like I'll start coating everything going forward.

 

[landruma]

I don't know what environment you've run it in, or how you store it, but I can say if I got a new Kubota and it did that, with the price increases they have done over the last two years.....they'd be taking it back.

"they'd be taking it back." Such a dumb comment.

 

[HAR]

". I live in southern New Hampshire, not by the beach."
How close to the 'beach' would be the question. A few years back, I read an article regarding ocean salt air & corrosion. It might apply here??

 

[tacticalturnip]

"they'd be taking it back." Such a dumb comment.

Oh yeah? You think that doesn't happen? Is it odd to you that a company should deliver on the promise of quality in the products they sell?

Just because you're willing to settle for subpar quality at inflated prices doesn't mean anyone else ought to.

 

[aircommuter]

Lol. “Tell me you don’t work on cars without telling me you don’t work on cars.”

Brake rotors just take humidity to rust. I think it has to do with them being cast. Every rotor I’ve ever met was rusty unless the pad had scrubbed it off recently.

Plus the fact that a friction surface is likely to rust because the surface iron and totally bare.

 

[tacticalturnip]

". I live in southern New Hampshire, not by the beach."
How close to the 'beach' would be the question. A few years back, I read an article regarding ocean salt air & corrosion. It might apply here??

My father-in-law lives right on the ocean, and his roughly 15 year Deere 4520 doesn't have corrosion remotely as bad as this year-old Kubota. This is subpar quality control, and it's ridiculous to see anyone acting like this is normal.

 

[Gord Baker]

Hello All, I have been reading a learning a ton on this site. Thank you to all who contribute.

I have a 1 year old Kubota 4760, 2022 model delivered in May of 2023. I am appauled by the corrosion on all the silver plated hardware. The tractor has 55 hours on it, and is kept either in my garage or under a 3-sided barn, it does not see the rain/snow. It stays on my property and gets washed a few times a year. I live in southern New Hampshire, not by the beach. It appears that just condensation has corroded every single plated fitting/hardware item. I have a BH92 on this as well, and all the silver connectors, even hose clamps, are corroded. Am I just expecting too much?

Some of the fittings say China right on them. I'm dissapointed and will now go and try to steelwool/oil all the parts, but what a waste of time. Here are pictures of the hydro connections for the FEL, under the cab and for 3rd funtion valve. I took these pictures a few weeks ago, on a warm morning. You can see some droplets from the humid air on the cold metal. Notice on the middle picture on the cab, some connections have zero corrosion, but most have the oxidation. I really expected more for the money spent on this. Any thoughts or insite? Thanks!

View attachment 872942
View attachment 872944

View attachment 872945

Those steel Fittings are likely coated with aluminum not zinc.
Moisture of course is the enemy. Try throwing a tarp over it to help prevent condensation forming. Spray affected parts with WD40.

 

[mike69440]

I sold a +30 Year old Kubota B7200 10 years ago, for what I paid for it. The Yellow zinc hardware and fittings were in excellent condition and the faded paint was still totally adhered with no rust. Steel parts were sandblasted and had white primer under the topcoat. That along and the solid welding, rugged electrical connections, quality plastics, along general attention to detail has made Kubota and Toyota top tier brands. I hope they are not following Boeing's fall from quality.
PS: the RTVX is $35K now. Our country is in need of some drastic changes.

 

[chim]

I never saw how tractors ship from Japan, but always assumed they'd be in containers. That would seem to give protection from salt spray wouldn't it?

 

[JurassicJet]

Try throwing a tarp over it to help prevent condensation forming.

A very bad idea. Have you ever seen a classic car that a person threw a tarp over it to "preserve" it, only to find the interior filled with mold?

If one wants to prevent condensation from forming, one needs air movement. A ceiling fan set on low does wonders and costs pennies to run.

 

[wawajake]

Like most here, my 2008 Kubota does not have any corrosion like that, it does get washed with hose maybe at most once a year....but here is maybe a wild thought, I notice when I wash my dark vehicles with house water from hose, I get salt like water spots.....I attribute those to the water softner salt we use with our rural house. Could water softener salt and ocean air be a contributer to the OP's corrosion on his fitting etc ?

 

[GrumpyL5030]

Hello All, I have been reading a learning a ton on this site. Thank you to all who contribute.

I have a 1 year old Kubota 4760, 2022 model delivered in May of 2023. I am appauled by the corrosion on all the silver plated hardware. The tractor has 55 hours on it, and is kept either in my garage or under a 3-sided barn, it does not see the rain/snow. It stays on my property and gets washed a few times a year. I live in southern New Hampshire, not by the beach. It appears that just condensation has corroded every single plated fitting/hardware item. I have a BH92 on this as well, and all the silver connectors, even hose clamps, are corroded. Am I just expecting too much?

Some of the fittings say China right on them. I'm dissapointed and will now go and try to steelwool/oil all the parts, but what a waste of time. Here are pictures of the hydro connections for the FEL, under the cab and for 3rd funtion valve. I took these pictures a few weeks ago, on a warm morning. You can see some droplets from the humid air on the cold metal. Notice on the middle picture on the cab, some connections have zero corrosion, but most have the oxidation. I really expected more for the money spent on this. Any thoughts or insite? Thanks!

View attachment 872942
View attachment 872944

View attachment 872945

Does your shelter have a dirt floor? My car had corrosion after I stored it in my dirt floor barn for the winter. These photos you've shared look way worse than what I've dealt with, but the car was inside for only 5 months in the winter When no dew came up from the ground like it does every night in the summer, along with the high humidity we see near lake Ontario. Viewing these pictures of corrosion on your machine looks like chemical reaction or poor metal used in manufacturing those parts. The only thing I can can recommend is to spray the underside of the tractor (or at the least, the effected parts) with oil. We do that every fall here in the rust belt to keep the salt from eating our vehicles up. Some people use vegetable oil, some use used motor oil (not recommended) or there are effective products in spray cans available just for this purpose at a lot of automotive stores. Fluid Film is a popular one, Rust Check is another. They're designed to penetrate the metal whether it's healthy with no corrosion or if it's corroded so the rust or corrosion can't take hold. I don't know what material your fittings are made of. But some metals probably won't absorb oil and corrode mostly on the surfaces. Aluminum acts that way. I'm curious to see what you find out from the manufacturer about those parts. Good luck!