Ak for Model Number wdt780saem1 My fill tube (black corrugated) has pinholes in it that are allowing water to leak down and rot floor only when filling tub (city water connection seems fine). The black tube w10878507 seems to need to go through this fill valve assembly before connecting the fill to the tub outlet, but I don't know how to take it off to remove the old hose and replace with a new one.
Answer AK, In order to replace the fill hose you will need to pull the unit out from installation. There will be a clamp on the valve end and on the fill supply end that you will use channel locks to release and then disconnect the hose and install the new one. Read More... Answered by AppliancePartsPros.com | Monday, October 3, 2016