took the pump off to have new shaft put in it because the splines were getting wore,, put the whole thing back together backed out of the shop hooked the old 1020 head up and ran everything, all worked well . head to do some wheat and got half way there and lost half my road speed. stopped checked fluids and the throw of the linkage nothing moved or came apart,, all was good i started down the road at 9.75 miles per hour 2600 rpms in third gear not good. made it there got half way around and went to back up and found out i lost reverse also. not even a vibration or try to move in reverse, so made a few laps and went home. something had to mess up in the pump, it worked flawless before we took it apart and had the dealer put the new shaft in. got to be the pump dont you think?????