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I brought my X728 in to the dealer because the brakes didn't work (110 hours on it with very little braking). Anyway, I thought they just needed adjusting but the transaxle is currently sitting on the bench and torn down waiting for parts. Apparently the disc rotor (or at least one of them) was not surfaced properly and instead of having a machined pattern on its face, it was smooth and thus offered no friction.

One would think the mechanic who put the transaxle together would have noticed such a flaw. So now I have a nearly new tractor that has already had a part of it torn down... not exactly the start I was looking for.
 

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One would think the mechanic who put the transaxle together would have noticed such a flaw.
Transaxles are "built" by assembly line workers
Transaxles are "repaired" by mechanics

Not sure the former has time to scrutinize the surface treatment of all parts prior to install
At times it takes even a good mechanic a while to i.d. a problem.

I wouldn`t be happy about it either but, these things do happen
 

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I brought my X728 in to the dealer because the brakes didn't work (110 hours on it with very little braking). Anyway, I thought they just needed adjusting but the transaxle is currently sitting on the bench and torn down waiting for parts. Apparently the disc rotor (or at least one of them) was not surfaced properly and instead of having a machined pattern on its face, it was smooth and thus offered no friction.

One would think the mechanic who put the transaxle together would have noticed such a flaw. So now I have a nearly new tractor that has already had a part of it torn down... not exactly the start I was looking for.
Wow sorry to here about that! Sucks to have such a problem with a new tractor. Not to mention a very spendy one. I bet they will get you baby as good as new for ya.
 

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Since you've had problems and it will be documented, hopefully they will take care of you in the future if anything happens. Sucks dropping all that coin and having problems, but it happens. I had the transmission out of my truck within 12k miles.
 

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Sorry to hear about your problem, but it is being dealt with under the warranty so hopefully no $ out of your pocket. Lost time is a pain though!
 

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Sorry to hear that. Hopefully your dealer takes care of you :fing32: and :goodl:
 

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Be glad it happen while under warranty.
 

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Would a patern make that much of a difference on a slow moving vehicle? My pickup has had glazed rotors and it stopped ok. Just say in.

JD probably changed over to a cheaper Chinese puck made from turkey feathers and the same posinous compound they put in drywall. :biglaugh:
 

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Discussion Starter #9
Would a patern make that much of a difference on a slow moving vehicle? My pickup has had glazed rotors and it stopped ok. Just say in.
The brakes on the X728 are inside the transaxle so I believe they are what you would consider a "wet system"... that is they're directly exposed to transmisson fluid, which will act as a lubricant. With this design, the texture of the disc will make all the difference in the world with respect to the amount of friction between disc and pad and the directly related effectiveness of the brakes.
 

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Keg,

That does suck! But like everyone else said, it's under warranty. Make sure you are fully happy with the repair work, make sure they make it right and test drive it if you can, before it comes back home.
 

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Be glad it's a JD and not a Cub and that it's still under warranty. slkpk
 

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It is a drag when things happen and I hope she is back working for you shortly.

As noted these are assembly line, not an excuse but stuff happens when companies are cranking out thousands of pieces of gear.

Your tractor is under a watchful eye and she will be better than ever in no time.
 

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It's definitely something that should have never made into the transaxle but
I'm curious we have an X720 and virtually never use the brakes, I guess they
work. You're problem definitely needs to be fixed though.
 

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Grateful,

Same here, the brake is only used for "parking" the hydrostat brakes the machine almost 100% of my use. But still, it should work! :)
 
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