As I recall, New Holland had a notice on the TN70 or TN70A (Unsure of tractor year(s) that it covered. The pump shaft that connect to the shaft in the front right corner of th engine was too tight and would twist off when it binds too much. The notice called for a smaller shim or something. But after it occurs, I believe they had to replace the pump due to the shaft being twisted off. Let's hope its not that.