DWHD440MFP (07) Thermador Dishwasher - Instructions

Mistakenly opened covers for the drain pump. Had to put those covers back in place.
Heater and pump installed easily with a bit of careful maneuvering the plugs and plug housing from the exterior. Pump installed in place easily. Clamp fit perfectly.

Repair was simple once the problem was diagnosed with the inlet valve.
Most of the work was in disconnecting the necessary lines so the dishwasher could be removed from the cabinets to replace the bad valve. Replacing the valve was easy. Reinstalling the dishwasher was just the reverse of the removal. The replacement part matched the original and solved the problem we had.

Replaced ‘sump’ housing , seal was leaking on it- replaced inop float on water level warning system switch, and switch itself as well- replaced drain pump motor attached to sump- replaced o-ring seal at water sprayer inlet valve- replaced water inlet plastic assemble on side of dishwasher- replaced drain hose out of sump assembly.

Used YouTube video to understand repair- this is an involved repair in time and complexity- dishwasher eventually gets turned upside down once removed and stripped down, to remove the white plastic water pan , which then allows access to the guts of all the above parts- some critical seals only come with new assemblies, so you are buying that new part to get a new seal and ensure no new leaks from what you took apart.

Popped the new one right on!

Part arrived on time. Double checked it was the part I needed. I unclipped the old seal and snapped the new piece in place.

Removed the middle basket and turned it upside down. Unplugged the spray arm from the middle basket. Snapped the new spray arm into the middle basket.
Installed middle basket into slides.
It works great. Great site for parts - reasonable prices too