DK40SE Squeal When Moving in Reverse.

[Coyote machine]

I don't see it as a con at all. Just an individual being more honest than they could if they were representing their dealership or company. "Off the record" will often get you a more honest appraisal than something that the speaker needs to explain to his boss.

OK, Interesting concept- hadn't considered that possibility.
Thanks for the heads up.

 

[RJJR]

Apparently all these engineers have no clue about harmonic noise and natrually assume it is more serious. I can and will tell you it is strictly harmonic noise and there is no damage to the HST unit! The rubber hose simply allows for a less abrupt flow and the rubber asorbs the harmonic noise. As for the drawing.... get a life! It is crude but effective.

If it were as obviously simple as you state then I believe Kitoi would ? should? put out a service bullentin to address the matter and put it to rest. Period. More likely they aren't sure what's going on which is why they haven't. To quote a project managment principle they have a "known, unknown, amount of risk" to mitigate and they aren't sure how to do that at this point. Credibility is a hard thing to maintain and even harder to regain. Putting your head in the sand doesn't ususally help either. Love my tractor but that doesn't change my assessment of the situation.


RJ

 

[quiturcrying]

I understand your position on the HST squeal. Information is forth coming to the dealer network and they know who to ask. Bottom line, It is all harmonic noise and aggrivating, not catastrophic.

 

[RJJR]

I look forward to that.
Thanks
RJ

 

[Coyote machine]

I can confirm that there is a paper trail from Kioti, but can say no more about it, than I've seen it and it does address the issue directly and officially. We're talking internal documents, NOT for public distribution. It is part of why I stated earlier that anyone who has the squeal issue or thinks they might be experiencing it should contact their selling dealer and discuss it with them. If they are unfamiliar with the problem, or Kioti's current official solution then they know what to do - contact headquarters.
So PLEASE be patient, the issue IS being addressed and Kioti is on top of the situation.

 

[seacap04]

Anyone with a squealing DK40 due for a hst filter change? If they are, how about grabbing an oil sample from it and have it checked out. This may ease concerns that the upcoming fix just treats the symptom and not the problem. You can also cut the filter open and use a bright light or magnet to check for metal filings.

 

[Coyote machine]

Anyone with a squealing DK40 due for a hst filter change? If they are, how about grabbing an oil sample from it and have it checked out. This may ease concerns that the upcoming fix just treats the symptom and not the problem. You can also cut the filter open and use a bright light or magnet to check for metal filings.

A good idea. I'm planning to do an 'early' 400hr service at something over 300+hrs., once my selling dealer receives the parts to do the rubber hose/fitting changeover, which is the official remedy for the squeal noise. I could save some oil from the filter to have analyzed, I suppose.

 

[seacap04]

It was just a thought I wish I had a few months ago when I started following this thread. For around $10 you may sleep better at night. I just changed the trans fluid and filter in my DK45, The drain plug has such a powerful magnet in it that it is a little difficult to put back in. I was very impressed with the design, The hydraulic filter has the same in the stem on the filter housing. I had a few filings on drain plug, but I do not know how long this fluid has been in there. The filter is the next best place to check and I plan to cut the HST open in the next day or two.

 

[Mike476]

Apparently all these engineers have no clue about harmonic noise and natrually assume it is more serious. I can and will tell you it is strictly harmonic noise and there is no damage to the HST unit! The rubber hose simply allows for a less abrupt flow and the rubber asorbs the harmonic noise. As for the drawing.... get a life! It is crude but effective.

First let me say that my interest in this post is that I have narrowed down my next tractor to a Kioti or MF, and that the harmonic issue some are experiencing will only be an issue for me if Kioti mismanages the situation. All manufacturers have had issues with their product, Kitoti is no different. Like autos, we the consumer fear recalls less and less and are now more concerned with how they are handled by manufacturers and dealers.

Not sure who you were referring to but speaking for myself, what I do know after 30+ years of working on hyd systems, vibrations analysis and health usage monitoring systems is that harmonics are an issue.

If Kioti has collected data that supports your claim that there is no damage to the HST, which would of course require extensive testing to confirm no issue exists over the expected life of the tractor, then I'm sure we'd be interested to read it. Otherwise, from my perspective, the comment is not only unfounded but when coupled with the fact that some seem to know details that others may not, being forthright and full disclosure on these issues are business practices proven to work. Todays consumers are much more informed, one only needs to do a little research into harmonics in hyd systems to discover a lot of money and engineering goes into mitigating their affect.

As others have stated, a bulletin stating something along the lines that "Kioti appreciates the concerns of current owners and those looking to buy our products, rest assured Kioti is investigating potential cause factors to ensure our product maintains its superior reputation and that our customers continue to enjoy what we at Kioti believe to be the best product on the market today". No personal emails to those unwilling to ignore the issue, FULL DISCLOSURE, PERIOD!

 

[somguyss]

I really wish that everyone would understand that the issue with the HST squeeling is totally a HARMONIS ISSUE only, I want to ask everyone who has had this issue for a legthy period of time and would like a honest answer.

1. Has your HST failed due to this noise?
2. Has there been any performance issues?
3. Other than the harmonic noise are you satisfied with your tractor (leave dealer expierence out)