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15yr old Precor EFX 5.21si. Rattling noise from rear when…

Customer Question
15yr old Precor EFX...

15yr old Precor EFX 5.21si. Rattling noise from rear when using lower elevations. Rattling goes away as the elevation rises. Sounds like a bearing. Also machine seems to produce a white dust which settles on the pedals and other parts

Technician's Assistant: When did you first hear this sound?

Couple years ago, gotten a little worse which is why I'm inquiring

Technician's Assistant: When was the EFX last serviced?

Never

Submitted: 5 months ago.Category: Exercise Equipment
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Answered in 33 minutes by:
3/15/2018
Exercise Equipment Technician: treadmilltech, Technician replied 5 months ago
treadmilltech
treadmilltech, Technician
Category: Exercise Equipment
Satisfied Customers: 6,029
Experience: 20+ years experience repairing exercise equipment with emphasis on Nordictrack/Proform and Horizon
Verified
Most likely the problem is within the wheel. Here is the link. https://www.fitnessrepairparts.com/m/cart/ViewItem/5005413
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Customer reply replied 5 months ago
why then does the rattling appear to emanate from the rear of the machine? If it is the wheel, shouldn't I hear the noise from the front also?
Exercise Equipment Technician: treadmilltech, Technician replied 5 months ago
The wheel is most common but I have seen the pivot asst cause the dust your describing as well here is the link to it as well https://www.fitnessrepairparts.com/m/cart/ViewItem/5001848. I would look at the pivot bracket and see if the dust may be coming from it. The bracket has a bushing that can wear out. Place a long handled screwdriver tip on a non-moving part of the bracket and place your ear on the back of the handle. You should be able to hear if the bearing/bushing is bad(it will be louder transmitting through the screwdriver). You just need another person to use it while you try and listen because it may only make the sound under a load.
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Customer reply replied 5 months ago
I am not able to rate the tech until I work on the machine to see if he diagnosed the problem correctly.
Exercise Equipment Technician: treadmilltech, Technician replied 5 months ago
Ok
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