KitchenAid KUDD03DT Series Technical Education page 46

6. To remove the heater:
a) Disconnect the wire connectors from
the heater terminals.
b) Remove the heater nuts.
Heater Nuts
Wire Connectors
4-10
c) Position the tub to its upright position.
d) Lift the heater and shield out of the
tub.
Heater & Shield