Small Engines (Lawn Mowers, etc.): K66Y transaxle, oil link, tractorbynet com

Question
I have a SearsCraftsman tractor with this transaxle. A problem developed. In forward drive, everything works normal. In reverse,about a month ago, I started hearing a loud grinding noise. And now, when I hit the reverse pedal, it seems to lock up the transaxle and my drive belt is thrown off the pulley. Any idea of how to fix this? Sears is of absolute zero help.

Answer
Have you tried changing the fluid?

Changing the oil link:

https://www.tufftorqservices.com/EnvEEdefault/FlatHTML/TechInfo/ttcoil/pdfs/cc%20K62%20&%20K66%20Oil%20Changing%20Procedure.pdf

https://www.tufftorqservices.com/EnvEEdefault/FlatHTML/TechInfo/index.htm


This link may be helpful if you need to rebuild the transaxle.
http://www.tractorbynet.com/forums/parts-repairs/164892-tufftorq-k46-repair-guid

Is the brake assembly causing the noise?  Make sure the transaxle bolts are tight.

Let me know what you find.
Eric