Case 580B shuttle pump...

Hello, new poster here. We have a 580B with the shuttle stall problem. After reading quite a bit on here, we decided the shuttle pump/control valve was likely causing the problem. After pulling the shuttle cover plate, the suction tube screen was about 1/2 covered with gunk, as many people here have found. The pump shafts were wore quite a bit as the drive gear had excessive side to side motion. The gears appear worn slightly (approx O.D. = 1.700"), but could probably be salvaged. The...

Case 580B shuttle pump...

Case 580B shuttle pump...