Model #831297742 PROFORM Treadmill

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Question and Answers

Q:

treadmill 831297742 why would the optic speed disc malfunction

A:

Our exercise equipment is definitely something we depend on and when it begins to malfunction it can be a huge inconvenience. While you are waiting for an expert to respond, I have attached a helpful link that includes a video below that may provide information to assist you with your question.

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Barbara H. -
January 13, 2012
A:

Usually it's not the disk itself that develops a problem; it's typically the sensor that fails. It's an electric component so sometimes they just fail for no obvious reason. Normally some type of a voltage spike causes it. In the case with these sensors the voltage is operates on is minimal so a 2-3 volt jump could cause it to fail. A static charge could build and cause that much of a jump under the right conditions.

Check the disk to make sure it's not obviously damaged and if it looks good then it's most likely going to be the sensor that reads the disk that has failed.

The sensor is part number 102955 and the disk is part number 119070. Both may be ordered HERE as needed.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
January 16, 2012
A:

Thanks for the help. Just a few more questions. Just wanted to mention the error message that I am getting is E2. In the past when I got this message, it turned out that the disc had fallen off the spindle. So the fix was just to put it back on again but now it no longer stays on the spindle. What could cause the disk to fall off?

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carmie -
January 16, 2012
A:

When the disk gets to where it won't stay on it's usually because either the plastic has broken (that would be obvious) or because the material has just fatigued with time and won't snap on and stay like it should. As long as the plastic is not broke you can likely put a drop of glue on the disk and then put it into place then allow it to dry. There really isn't any stress on it so a drop of glue should hold it. The glue will work assuming that yours has a little cup on the disk that slips onto the end of the motor shaft or roller shaft. There are several different types of disks/sensors so if what I'm describing doesn't seem to fit how yours is then you'll just have to get a new disk for it.

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XX Wade_ -
Sears Technician
January 16, 2012
A:

I ordered a new disk and it arrived yesterday. It is the correct part and looks exactly like the one I had on the treadmill previously but this one does not fit on the rod. The hole in the middle of the disk is a tad smaller than the original disk so I am having a difficult time getting it to fit. I am afraid if I put any more pressure on it, it will crack. Could it be that it was just made incorrectly? What do you suggest I do? Thank you in advance for your help.

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carmie -
January 20, 2012
A:

I don't have any notes that anything has changed with the disk from when this was a new machine. I've not ever come across one that was made incorrectly. Anything is subject to happen in mass manufacturing of parts, but for this particular piece, I've never seen it. Make sure the end of the motor shaft is clean and that there isn't any rust/corrosion built up as that can cause the disk to be difficult to install. If it's clean then see if you can't force the thing on there. Try to apply more pressure to the center of the disk rather than the outside areas of it.

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XX Wade_ -
Sears Technician
January 21, 2012
A:

Hi, I tried to push the disk on but it does not fit, the hole is simply too small so I"d like to check again to be sure I have the correct part. I have a pro form model#831297742. The part number that I was told to order is 119070. Is this the correct part number for this treadmill? Thanks again for the help.

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carmie -
January 23, 2012
A:

That is the correct part number. It's possible the wrong part was pulled in place of the correct one. Not likely, but it is possible. Was the drive motor ever changed? If the wrong (or different) motor was put on that could change the disk that's used.

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XX Wade_ -
Sears Technician
January 24, 2012
A:

No, the drive motor has never been changed, so I am not sure what I should do at this point. Any suggestions would be greatly appreciated. Thanks again.

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carmie -
January 24, 2012
A:

Try heating up the collar (the part that should go over the shaft) with a hair dryer or lighter, to soften the plastic, and then see if you can get it to go on the shaft. If that doesn't work you will need to use a pocket knife to kind of ream out the hole a little bit. Other than that I can only say to return the part and get another one to see if it will work any better. Many times the plastic pieces can vary slightly and not fit exactly as they should. I've never run across one that was just so bad small that it couldn't go on after heating it up though.

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XX Wade_ -
Sears Technician
January 24, 2012
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Q:

My Proform 730SI stopped working.

A:

It sounds like your having a hard time with this washer. I understand your concern. I researched your question and was unable to locate information that would be helpful. An expert will respond shortly. Have a great day!

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Jackie S -
February 17, 2012
A:

The problem with the treadmill does not seem like something that would be related to the console. Everything the console should be doing seems to be happening (from what you've described).



I, too, tend to lean towards the power board as being the problem. Do check the speed sensor again to make sure it has no dust on it and that the disk is in place. They need to be pretty close together as well; but not touching. If the sensor looks to be fine and the disk is in place then getting the power board is the logical choice.



Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
February 17, 2012
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Q:

Treadmill #831297742 runs too fast when I turn it on, and the speed disc falls off. How can I examine to diagnoise and repair this problem? Thank you.

A:

Managemylife.com is always a great resource to find the answers to just about anything. Your expert will research your question and respond within two business days but usually sooner.

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Alina F. -
January 07, 2012
A:

You can watch THIS VIDEO to see how to calibrate the speed on your treadmill. Make sure to follow all the directions as you'll be working around components that carry high DC voltage and we don't want you to get shocked.

If you do this procedure and the problem still remains then you will need to replace the controller board on your treadmill.

Let me know how it goes.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
January 10, 2012
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