Or instead of splitting it you can make a large gear puller like we did, i cute a piece of 3 inch aluminum stock, machined out a groove, tapped it and then put a 8 inch I-bolt into the tapped hole. Easy to make, can be re-used as much as needed, and will not do any damage to the motor or pulley. For any questions on how to make this giant gear puller please fell free to contact me on aim at etakto738 or on gmail at
eshteyn375@gmail.com