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Treadmill slows down and speeds up erratically when running.

Customer Question
I have tried adjusting tread...
Treadmill slows down and speeds up erratically when running. I have tried adjusting tread belt tension and it helps some but it happens again. It feels like there is too much drag putting the motor under load. I have tried cleaning the belt. The drive belt from the motor to the front roller also squeeks. I don't know if I need to be checking electrical things or belt wear or what. I am pretty handy and can replace parts myself, I just need some help with troubleshooting.
Submitted: 2 years ago.Category: Exercise Equipment
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Answered in 1 hour by:
2/29/2016
Exercise Equipment Technician: J.T., Technician replied 2 years ago
J.T.
J.T., Technician
Category: Exercise Equipment
Satisfied Customers: 1,231
Experience: I have over 10 years experience in all fields of fitness equipment repair and service.
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Hi how old is the unit? Has it ever been lubricated?

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Customer reply replied 2 years ago
Hi. I bought it used from a closing gym in 2010. So, my guess is about 8 to 10 years old. I have not lubricated it. I couldn't find anything on lubrication anywhere in any of the maintenance or repair manuals online.
Exercise Equipment Technician: J.T., Technician replied 2 years ago

Ah OK if it's a unit from a gym it does not get lube. If it's that old your belts and deck are worn out for sure. Being that old and from a gym it's not going to be Cheap to fix. Most likely not cost effective.

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Exercise Equipment Technician: J.T., Technician replied 2 years ago

You can look up Parts at fitnessrepairparts. Com or Treadmill doctor. Com

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Customer reply replied 2 years ago
OK, so you think the deck and the belt need replacement? How do I know that is it? Something I can check? Could it be just the belt or would it be the deck too? I can replace both deck and belt for under $500. It is an $8k unit new. I paid $1k used. $500 would be worth it rather than trying to find another gym unit and moving both!
Exercise Equipment Technician: J.T., Technician replied 2 years ago

Belt and deck need to be replaced at the same time. They wear together. How does the Motor sound ? Is it very loud? That's Cheap for a commercial unit so that would def be worth it. Usually they are much more $

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Customer reply replied 2 years ago
Motor makes a bit of a clicking noise but not real loud and the drive belt squeaks. I checked the brushes and they looked ok to me.
Customer reply replied 2 years ago
$419 gets me a new deck, belt, and drive belt. Anything else I should check before I order?
Exercise Equipment Technician: J.T., Technician replied 2 years ago

That's a great deal. The only other 2 things are Motor and controller. But the units works fine until under load. So that means too much friction.

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Customer reply replied 2 years ago
Oh, I should divulge, I replaced the motor controller a few months ago because it was blowing fuses. That fixed that issue. Found one for $300. that make any difference to your answer? Any idea what the clicking in the motor is?
Exercise Equipment Technician: J.T., Technician replied 2 years ago

Well it was blowing fuses due to bad belt and deck. Too much draw from the Motor trying to keep the correct speed. The clicking is the bearings wearing out on the Motor.

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Customer reply replied 2 years ago
OK. Thanks! Just let the bearings go on the motor and keep running it? Are they replaceable or would that be a full motor replacement?
Exercise Equipment Technician: J.T., Technician replied 2 years ago

You can have it rebuilt or replace the Motor. Check prices on both. As long as it's not too loud just run it

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Customer reply replied 2 years ago
OK. It's about $800 new. I doubt rebuild would be less....but maybe. Thanks again. I will try replacing the deck, belt, and drive belt and see how that does. even motor replacement is cheaper than trying to find a similar quality treadmill.
Exercise Equipment Technician: J.T., Technician replied 2 years ago

Rebuild usually cheaper. Try an alternator Repair shop

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Customer reply replied 2 years ago
OK
Exercise Equipment Technician: J.T., Technician replied 2 years ago

please rate my answer. thanks!

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J.T.
J.T.
J.T., Technician
Category: Exercise Equipment
Satisfied Customers: 1,231
1,231 Satisfied Customers
Experience: I have over 10 years experience in all fields of fitness equipment repair and service.

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