My '71 9500, with what I believe had a RT 610, may have had a clutch brake and I didn't even know it. Just by habit, I would push the clutch all the way down at a stop and while shifting, about 3/4 of the way down. The other 2 Road Rangers that I drove was another 9500 (A '70 with a 6-71) and a late 60's White (9000 ?) with a 220 Cummins. Shifting all 3 trucks was no problem and all went smooth. I guess my personal technique just worked out. What's funny is that when I would ride with the other hired driver, he would only push the clutch about 1/4 of the way down. He was also the one who never learned how to downshift. Riding with him was not fun at times.
