Rear wheels binding

[CADplans]

Thanks everyone!
I will make a plan for after the 4th to open it up.

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Maybe,, I missed it,, but, the FIRST thing I would do is jack up EACH tire, individually, and spin that tire.
If there is a high, low range, put it in neutral.

Notice if one tire is more difficult to turn, than the others,,

Your problem might be as simple as a defective bearing, or a rusty universal joint,,

There is a LOT of diagnosing steps,, before "opening it up",,, IMHO,,

 

[airbiscuit]

That's good advice. It sounds and acts like my wife's Subaru when a front wheel bearing failed.

 

[rScotty]

Maybe,, I missed it,, but, the FIRST thing I would do is jack up EACH tire, individually, and spin that tire.
If there is a high, low range, put it in neutral.

Notice if one tire is more difficult to turn, than the others,,

Your problem might be as simple as a defective bearing, or a rusty universal joint,,

There is a LOT of diagnosing steps,, before "opening it up",,, IMHO,,

I think that way about diagnosing first too, that's why I posted a testing format back in post #5 ..... I figured it would help get a start on diagnosis.
But I wasn't surprised to find that many prefer speculation to diagnosis - especially on a forum.

That it didn't surprise me also because I had already learned it back when I had a half dozen mechanics working at my repair shop. At first it took me by surprise that some good mechanics were of the "take it apart to see what is wrong" school of diagnosis. It took me a while to figure out how to deal with it.

My problem was being a "diagnosis first and wrenches later" kinda guy, it surprised me how many decent mechanics people don't do much diagnosis at all. Being a young shop owner and sure I was right, I constantly tried to get all the mechanics to at least try to diagnose first and tear it down based on what they learned. But not very successfully.

The "just tear it down and see what you find" type of mechanic was equally adamant that the proper way to do repairs was to just start in somewhere close to the problem and progressively take things apart until the problem was found. The ones who worked that way did OK, and I noticed that they had less of a problem than the diagnostic bunch in defending their resulting hours on the repair bill - always a problem for a shop owner.

The other thing I noticed about the "tear it down" group was they tended to avoid electrical & cooling system work and preferred straight mechanical. They were particularly good with gearbox and drive train work. I guess that's not surprising either.

rScotty

 

[Fireman984]

I spun each wheel. They both spin fairly easy till it catches. The catch happens with both sides while in neutral. I can spin about 1/4 turn on the wheel before it catches again.

 

[winston1]

Not sure what I am looking at, is that a broke tooth?

 

[Fireman984]

Ok I got a scope inside. Ring gear is trashed. See video. Now I need to find parts. Anyone know what it would cost to machine one if I can't find one?
2213441.mp4 - Google Drive

 

[Fireman984]

Pinion gear but the outside housing looks like it's been cracked off. Thre video shows the ring gear and it is missing several teeth.

 

[airbiscuit]

You might be in the place where you search high and low for parts. If None available, sell it for a parts tractor.

 

[Fireman984]

I just bought it unfortunately. Would like to keep it if I can.

 

[rScotty]

I just bought it unfortunately. Would like to keep it if I can.

I have no idea where to go to look for parts, but Yanmar must have built thousands of that model. Where were they sold?
BTW, if it were my project, I'd be looking for a whole rear axle assembly. It's going to be used, and the whole assembly may be less than the parts.

Now that you know what you are looking for, are you still going to tear it apart? Or leave it together until you find the replacement parts?
rScotty