kenworth
Guest
Had to replace them on a 89 9600 at 2600 seperator hrs. Grease had not been changed before I got machine so it was like mud in the bottom. A few guys in our area are changing clutch packs in that hour range. Don't know of any updates but if you wait too long there are housings and other pieces to replace also. We got by for around $800 in parts plus labor but we were replacing rear engine seal at the time so killed two birds with one check blank.