Brakes on a KB1914

[snagmaster62]

I just purchased a slightly used KB1914 that has 110hours on it. I was so excited by the overall physical condition of the unit which has a FEL and box blade that was reasonable priced that I never gave it a full mechanical checkout. Since this is my first tractor I was not real familar with the operation of the unit to be able to give it a good trial anyway. Now as I have been going over the unit carefully at home it appears that the brakes have been all used up. When I try to apply the brakes going forward in 1st gear all I hear is what sounds like a scraping sound and there is no stopping power at all. I am guessing that the previous owner may have rode the brakes with the brake locking mechanism on (like I have already done once) and used up the brakes.
Question: Can anyone confirm my thoughts that I need to have the brakes redone?
If so, what is involved in rebuilding the brakes? I am mechanically inclined but don't want to get over my head. Does the job require any special tools?
Thanks in advance for any help that anyone can offer.