The 3520, whats the scoop?

[_RaT_]

Concern was the issues that some folks here were expressing about lower sways breaking away from the rear axle which as it turned out was made of cast aluminum rather than what most figured would be cast iron. Much progress has been made in metalurgy with huge advances in both casting of iron and aluminum. I really do not know if it was ever a serious problem, its perhaps more of a mental thing then a reality. Just curious if JD was still using aluminum on the rear axle. I'm pretty sure the front axles are cast iron.

I do not not own a 3520 but the fellow I bought my 4210 from recently bought one. He only has one big big problem.... He lost the turbo in less than 20 hrs. Other than that he loves it.

My 4210 has the ehydro and I have never had a problem with it. In regards to the cast axle housing, have nothing bad to say about it. Although I use the 4210 around my house, it gets a good work out with the back hoe and no issues after a 1000 hours.

What is your concern with rear axle?

I have a 110 tlb that get the crapped knocked out of it in my business and it has been rock solid aside from a few hydraulic leaks. It is powerful little tractor....

 

[Cocre]

The front axle on the 3x20 is cast iron, made by Dana-Spicer.

 

[Kyle_in_Tex]

Rat, the only failures I've seen posted seem to be caused by either hitting a rear implement hard from the side or by trying to box blade backing up in hard dirt/clay. I've done some of both and have been lucky but I'm now careful of what I do backing up. Its a physics thing (buckling vs. tension).

PS. I've seen a thread of a cast iron orange machine very much broken.

 

[_RaT_]

Yep, we have all seen many threads on broken castings of every color. Its not a color specific thing. I broke my L3830 brake housing doing something that was entirely my fault. Did a quick online order with TractorSmart and had the new part in 3 days. It was $230 but it also weighed 50lbs. It was back in 2002 or so that the guy showed in detailed pictures the snapped aluminum rear end on his 4310. On the other hand, he may have been doing something stupid like me, chances are good. My old NH 2120 could not have ever broken the rear axle by backing up a box blade, the lower links would bend like semi-cooked noodles well before that would ever happen. I posted a picture of them long ago. I've mentioned it before, if you need split braking, the Kubota HST is not your tractor, I have ravines and cliffs and have yet to need them but then my Kubota L4850 5 cylinder direct injected shuttle wet clutch tractor with a huge cast iron rear axle always has them available should I need them.

I always back up my tractors boxscraper into hard material, this tractor is just designed to take it. Maybe I will have to post a picture of the beast. (In the Kubota section of course)

Rat, the only failures I've seen posted seem to be caused by either hitting a rear implement hard from the side or by trying to box blade backing up in hard dirt/clay. I've done some of both and have been lucky but I'm now careful of what I do backing up. Its a physics thing (buckling vs. tension).

PS. I've seen a thread of a cast iron orange machine very much broken.

 

[_RaT_]

The front axle on the 3x20 is cast iron, made by Dana-Spicer.

Thats good!

 

[Spudland_Dave]

I was boxblading in reverse a year ago and I can tell you now that the housing didnt even bat an eye when I bent a lower lift link like a pretzel...

 

[Nuru]

got a 3520 Cab, very pleased, no issues.