Hi!

I'm trying to remove the lower arm for the Dishwasher brand Estate, model TUD4700KQ1.

The machine stopped draining water. What I did was the following:
1) replaced tube going from dishwasher to waste disposal
2) let the water drain from the dishwasher to a bucket - when bucket is on the floor water runs no problem, if bucket elevated to the same height as waste disposal, water doesn't drain
3) I assume the issue was low power on the pump - decided to look for videos on how to replace the pump
4) got stuck on the part where I need to remove the lower arm to disassemble the old pump. No videos have a similar arm to this one
5) asked for help here

I've attached pictures of the arm and the model and brand. The arm looks exactly the same when you look from the back of the machine (I stuck my head there to try to find a lever or something).

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I don't know the year of the machine since it was bought refurbished by someone not living in this house anymore.

Thank you so much!