How to dissassemble the motor?

I need to replace the motor coupling as one of the teeth broke off and the tub is no longer spinning. Ive ordered the part but need to know how to take the motor and the pump off so that I can replace the coupling. Is there somewhere that I can find these instructions or a diagram for a Whirlpool washer model LA5580XTN1 (more than 10yrs old)? Thank you for your help.