Service Manual:
https://drive.google.com/open?id=1A7uGiIY8ziIMjKXTW674cmCTTKHcVthX

Part Number WPW10729328 (AP6023953) replaces W10646640, W10729328.

Part Number: AP6023953
Manufacturer's Part Number: WPW10729328
Manufacturer Model Number Description
Whirlpool WMH32519CB1 MICROWAVE
Whirlpool WMH32519CS1 MICROWAVE
Whirlpool WMH32519CT1 MICROWAVE
Whirlpool WMH32519CW1 MICROWAVE