First verify if your are getting the noise with a user physically on the machine, without anyone on, or both.
Creaking or squeaking while running on the machine usually indicates an issue in your incline motor, deck frame, springs, and or pivot points.
A loud grumbling noise getting louder and louder while elevating speed, usually means you have a bad bearing.
Any knocking noise coming from a treadmill indicates bad bearings in your front roller, rear roller, or drive motor.
Isolate the bearings in the front and rear rollers from the drive motor bearings.
To test: Unplug the machine, remove the main shroud, remove drive belt from drive motor and front roller pulley.
After doing so, move the treadmill belt by itself by pushing it backward or forward with just your hands and listen for any noise, if you get any noise it is most likely coming from either the front or rear roller. To isolate the noise from the two rollers you can loosen the belt and turn each roller individually.
If no noise with the first test, go ahead and start the machine and run it at a low speed. You want to listen for noise, if you get knocking or grumbling while drive motor is running with no drive belt attached then the issue is in your drive motor.
A lot of times simple maintenance will save your treadmill from noise, you want to make sure and lubricate your treadmills pivot points
. Incline motor bolt, shaft, deck screws, and or any pivot points
on the bottom of your machine. Metal on metal pivot points
are usually the culprit in most cases.
Pivot points are just areas of high friction where there may be a bolt, washer, and nut attached to the base of your frame or any hinges on your folding type treadmills. Metal on metal needs to be lubricated to minimize wear and tear of those areas.
Synthetic grease works best or any spray on lubrication works fine if you do not want to remove any bolts or hardware.
If you ever find yourself needing technical support, please do not hesitate to call us 888-713-2880 or visit us online at www.sportsmith.net