Possible L6060HSTC Problem?

[bdhsfz6]

I have less than 200 hours on my L6060HSTC and, for the last year or so, have noticed what I call "gear clatter". It's difficult to describe. There is no grinding or vibration and it isn't loud, just the sound of gears meshing with a little space between the teeth. I only hear it after the machine has been used for an hour or so, particularly in hot weather. The tractor is not overheating and the temp gauge reads in the normal range. The HST oil level is in the normal range on the dipstick. Changing gear ranges, using the differential lock or shifting in and out of 4WD makes no difference.

I've had 5 previous Kubota HST tractors and all have had that HST whine but I never noticed this particular clattering noise before. The L6060 is my first cabbed machine though so I don't know if this noise is normal and just amplified by the enclosed cab.

The tractor performs normally except it sometimes stops abruptly when taking my foot off the HST pedal. Adjusting the HST mode and response settings on the Intelipanel make no difference. The problem, if it actually is one, goes away after the tractor cools off.

The L6060 is also the first tractor I've had that uses the newer SUDT2 transmission oil, which seems to have the viscosity of water when hot. My previous machines all used the older UDT oil which seems much more viscous. I'm not sure if this could be a contributing factor or not.

I'd appreciate any thoughts others may have.

 

[RjCorazza]

I have 700 hours on my L4060 and haven't noticed any sound differences between cold and hot. I would likely try using UDT instead of the sUDT2 at your next fluid change, or now if it's bothering you. My manual only lists sUDT2 for the transmission though.
NE PA is likely not that cold that sUDT2 is necessary.

 

[SDT]

I have less than 200 hours on my L6060HSTC and, for the last year or so, have noticed what I call "gear clatter". It's difficult to describe. There is no grinding or vibration and it isn't loud, just the sound of gears meshing with a little space between the teeth. I only hear it after the machine has been used for an hour or so, particularly in hot weather. The tractor is not overheating and the temp gauge reads in the normal range. The HST oil level is in the normal range on the dipstick. Changing gear ranges, using the differential lock or shifting in and out of 4WD makes no difference.

I've had 5 previous Kubota HST tractors and all have had that HST whine but I never noticed this particular clattering noise before. The L6060 is my first cabbed machine though so I don't know if this noise is normal and just amplified by the enclosed cab.

The tractor performs normally except it sometimes stops abruptly when taking my foot off the HST pedal. Adjusting the HST mode and response settings on the Intelipanel make no difference. The problem, if it actually is one, goes away after the tractor cools off.

The L6060 is also the first tractor I've had that uses the newer SUDT2 transmission oil, which seems to have the viscosity of water when hot. My previous machines all used the older UDT oil which seems much more viscous. I'm not sure if this could be a contributing factor or not.

I'd appreciate any thoughts others may have.

Start by checking torque of wheel and rim nuts/bolts.

 

[nybirdman]

You should notify your dealer;if something shows later.I had a couple warranty repairs and my dealer was excellent(no cost,not even transportation).
I have a cabbed L4240 and only use SUDT,no undo noises.