13
CHAPTER 4: TROUBLESHOOTING
4.6 Troubleshooting – Noise Issues
Symptom
：
1. Thumping noise twice per rotation on a new machine.
2. Rubbing / grinding noise.
3. High pitched “bell-like” sound from under the motor cover.
4. Banging or clunking sound.
5. Slapping / thunking / squeaking sound with each footstep.
6. Rubbing sound underneath the treadmill.
7. Squeaking / grinding noise when using elevation.
Reason
：
1. Roller or belt noise.
2. Moving component is rubbing.
3. Optic disk rubbing.
4. The unit is not level.
5. Running deck or belt system is not tight.
6. The running belt is rubbing on something.
7. The incline motor is missing washers or needs lubrication.
Solution
：
1. This noise is from the roller or running belt.
a. If this is a new unit, some noise is normal as the running belt forms around the rollers.
b. Check that the belt is centered and tensioned correctly.
c. Remove and clean the rollers if needed.
d. Replace the rollers or running belt as needed.
2. This sound is likely a moving component.
a. Remove the motor cover and check the drive belt for alignment and make sure it is not slipping or
is frayed / cut in any way. Replace the drive belt if needed.
b. Make sure the optic disk on the motor is not rubbing the speed sensor.
c. Turn the motor by hand to see if motor brushes or bearings are rubbing. Replace the motor
if needed.
d. Check the front and rear rollers, replace if needed.
