ARM SPRAY LOWER Assembly WD22X22857

Hello Nicola, Thank you for your question. First, remove the lower rack to access the lower spray arm. Gently lift up on the body of the spray arm while rotating it counter-clockwise about 90 degrees. This will "unscrew" the arm assembly and permit its removal. To replace, put the spray arm back into place and turn the body clockwise until it locks into place. We hope this helps.

Hi Caetie, Thank you for your question. The part number listed under your model number for the middle spray arm assembly is PS11766980. You will also need the center wash arm support. The part number listed for it is PS8756344. We do not have photos of these parts on our website, but we have sent you an email with photos of them. If you would like to place an order for them, you may order them either online or by calling our customer service line and anyone will be happy to assist you. We hope this helps! If you have any questions, please let us know.