Found 4 separate holes on the old part after wondering why the suction had dropped - my animal was probably over 4 years old and was getting daily due to a German shepherd used. Decided to try this part instead of going the other way. Took it apart after watching a U-Tube video, kept the parts order in order, then replaced it. Used a few non-standard tools to remove all of the screws, but that's about it. The total time was about 90 minutes. Just make sure the ball and spur gear are aligned before reassembly, otherwise you will not align properly. Works well, suction power improved by 100%.
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