I am getting a buzzing noise from my electric motor. i tried changing the capacitor but still no change. The motor starts up sometimes but starts making a noise.Isusupect the winding or a bearing in the electric motor. How do I strip the motor from the pump?

First thing you must check the machine with load, without load with water fed, and without load with no water fed. Then check the simpler cause. See if the cooler fan is hitting the casing.
If you check machine without pressure load and without water and still buzz...then the motor has a bearing fault or other fault.
The head of the pump can be removed from the motor. Carefull because as you remove you will have the springs of the pistons pushing out. Now under the pistons and complete head you find "Oil". Remove this oil and you find a thrust bearing. Remove bearing by hand and you see a plate..held by a screw(most cases). In my opinion I always send the motor to a winder, even for bearing replacement. But if you know how to replace damaged bearings..go ahead. One small thing..if you have a chance, try the motor on its own without the head( this is tecnician work)...if it still buzz..it is for sure the motor. Also it is wise to check the pistons at the head. If these are scratched or damaged and stuck...they will also have caused unnesessary load on the electric motor. When putting back all things together it is wise to replace all seals.
Fulltech.