M62 suddenly slower…?

[Putneymountain]

Here’s a bit of a head scratcher.

We tend to run our M62 HST at medium high-low. Suddenly last week, at either setting, it feels like its running about 20% slower. At 1500rpm on level ground, its going about 6.5km/hr.

600 hours and everything else is working fine. All fluids are fine and full. All suggested maintenance has been done.

I’m wonder about something like the pedal-HST pot…any other thoughts?

Thanks in advance for any help.

 

[OntheRidge]

Silly question but does it have the hst plus transmission? Did it get knocked into "turtle" vs "rabbit"?
Edit: after re reading this, I see you said "at either setting", which I take to mean you are aware of the hst plus.

 

[Putneymountain]

Thanks for asking.

Yes, the slowing seems to be both "turtle" and "rabbit" although a bit more noticible in rabbit.

 

[mikester]

Going slow in reverse as well?

Check your drive servo connections? Try some contact cleaner

 

[Putneymountain]

I'm not sure about reverse...

The Kubota service manual doesn't even have the word "servo" in it.

Thanks