Turn off the dishwasher breaker in your service panel.
Remove the screws securing the lower access panel to the bottom of the dishwasher, then remove the lower access panel.
Remove the screws securing the water inlet valve, then move the inlet out of the way.
Pull the wire connectors off the heating element terminals, located behind the water inlet valve.
Remove the bolts securing the heating element terminals, using a 1/2-inch open-end wrench.
Open the dishwasher door and remove the dish rack.
Lift the tabs on the underside of the lower spray arm, then remove the arm.
Pull the element terminals through the bottom of the wash tub, then release the element from the brackets. Remove the element.