HST Noise when using "Cruise Control"

[TheMacGyver]

I have a 3350 Cab Model. When using the cruse control it appears the noise from HST is being mechanically amplified to the point where you just can't stand the noise without ear plugs. Kinda defeats the point of a cab. With the foot petal all is good, engage the cruse and all "****" breaks loose inside the cab, noise is unbearable. Dealer has no answers other than trying to install some insulation. I will pick it up tomorrow but I am sure it won't work. Is anyone else having this problem? I am satisfied it is being amplified through the linkage when engaged. Perhaps some insulating bushings or rubber pads are missing. Just wondering if all of them are like this or just this one. Been doing it from day one, 60 hrs on it.

 

[KubotaToy]

Try varying the speed slightly up and down. Does the whine go away? If so, it is just the resonant frequency at that rpm and speed.

 

[Redneck in training]

The cruise control locks the pedal position by electromagnet therefore it is possible that the electromagnet transfers the HST vibration to the cabin while your foot doesn't. I think the problem is the HST vibration. When you step on the pedal you might feel some vibration.

 

[sandyc]

My 3350 does the same. Also the noise is increased when the parking brake is set..I'm guessing that the cruise control and or brake connect the cab to the drive train and that transmits noise to the otherwise isolated cab. Luckily, I don't use the cruise control.

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[TheMacGyver]

The noise is definitely "linear" ie.. More RPM's more noise. I just picked it up from the dealer, he advised the contacted Kubota, lots of complaints but no fix. He said they tried some type of insulation but it did not help. My wife mows about 5 acers with it, that cruse would sure be handy.