I have a 731 bobcat. Recently I removed the motor to fix some oil leaks. When the motor was removed I noticed that the spline fitted to the end of the pump was worn and I decided to replace it. The spline was secured to the pump shaft by a bolt, a washer and a key. I removed the bolt and washer, I could not budge the key or the spline. My question is, does anyone know any simple method of removing the spline from the pump shaft?