My Dishwasher Will Not Drain. It Will Wash. All The Hoses And The Garbage Disposal Are Clear. I Found The Pump Part On Your Site. I Want To Make Sure I Can Replace It Myself. I Can See It After Removing The Toe Plate. It Just Is Very Difficult To Reach. Should I Replace It From Inside The Machine After Removing The Motor?
The following should help.
http://www.servicematters.com/maytag_library/docs/16021814.pdf
As a tech I am used to getting in at tight places , I would give it a try and if you have problems then pull the unit out from under the cabinet till you can get at it.