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Stairmaster SM3 - Parts Help?

Posted: December 19th, 2023, 4:01 pm
by SM3 Noobie
*See attached pictures My model # is 9-3400-MINTP0 or SM3400L19340106

I recently purchased a used Stairmaster SM3. It has some squeaking on the right side while operating. When I inspected it, the chain was loose. Tightened the right-side chain and there was a new squeak.

There is a round part that has worn a little through the frame in the picture. It looks like there was once a grommet or bushing around the round part that wore off long ago and allowed the metal-on-metal to cause some "wallering out."

Does anyone know what the part # is for the replacement "round piece" I am referring to in the pictures. It is between the 4 black screws in the picture.

I am hoping if I replace it, that'll eliminate the squeak and hopefully breath some more life into this machine. I know it wont set perfectly because of the damage already caused. I greatly appreciate any help.

Thank you!

Re: Stairmaster SM3 - Parts Help?

Posted: December 20th, 2023, 8:13 pm
by Stan Saryhin
You can check here

https://www.fitnessrepairparts.com/equipment/24136/diagrams/37642

It's in the chain assembly diagram