Forum › Forums › Stairlifts › Stannah 400 – Cleaning Rollers? › Reply To: Stannah 400 – Cleaning Rollers?
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I am a stannah engineer and it sounds like your motor gearbox is failing. It wont be the rollers and definetly wont be the pcb. You can get a rumbling on the down journey when the lift is not loaded caused by incorrect roller bogey torque. should be 4 nm .