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Belt squeaking and hesitating when I run

I have a Pro Form 770 EKG Treadmill. It has started squeaking when I run and occasionally hesitates when my foot lands and throws me off balance. Do I need to lube it? If so, how and with what?

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Before beginning this repair: Check to make certain that the drive belt requires adjustment. Check out belt slipping instructions or with the motor cover removed, walk on the belt normally and try to stall the belt to make it slip. Be careful during this test. If the problem is in the drive belt, either the drive belt will stop when stalled or the front roller will stop when stalled. If the motor, drive belt, and front roller continue to turn when the walking belt is stalled, the problem is with the walking belt slipping on the front roller. If the drive belt continues to turn but the front roller stalls, you may have a broken front roller pulley.
Step 1- Find the motor mounts. Many motors in Icon treadmills have a main pivot joint in which a bolt runs the full length of the motor mount. This bolt will require loosening to provide maximum adjustability. Some models have a single jack bolt and others have an auto tensioner. Single jack bolts are the easiest to adjust. Step 2- Find the set bolt(s) on the motor. This is typically run through only one side of the motor mount or may be on both sides but it does not run the full length of the mounting. Loosen this bolt(s) but do not remove. Jack bolt models will have flat mounts and may contain up to four bolts. Step 3- Look for a bolt that will tension the motor. If it has this bolt, it typically runs in the same direction parallel with the drive and walking belts. If your treadmill is not equipped with this bolt, skip to Step 4. If your treadmill is equipped with this bolt (very few are) the repair will only require one person. Using 2 7/16" wrenches, make a few turns to this bolt, tighten the bolts from Steps 1 and 2 and test your treadmill for slipping. If belt continues to slip, repeat Steps 1, 2, & 3. If a second attempt does not repair the problem, skip to Step 5. Step 4- If your treadmill is not equipped with a bolt as described in Step 3, the drive belt must be tensioned by hand. While one person applied increased tension to the drive belt, the other person should tighten the motor set bolt(s) that are described in Step 2. Tighten the bolt from Step 1 and test. If the problem is not corrected, repeat Steps 1, 2, & 4 and retest. If problem persists, skip to Step 5. Step 5- If you have arrived at this step, let's make sure you have a drive belt tension problem. With the motor cover removed, walk on the belt normally and try to stall the belt to make it slip. Be careful during this test. If the problem is in the drive belt, either the drive belt will stop when stalled or the front roller will stop when stalled. If the motor, drive belt, and front roller continue to turn when the walking belt is stalled, the problem is with the walking belt slipping on the front roller. the problem. Another possibility is that the drive belt has worn down. In some cases, belt dressing may help correct the problem. If not, the drive belt must be replaced. Step 6- The belt should be able to be turned by hand at approximately a 90 degree angle from its normal operating position

Posted on Jun 03, 2010

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Posted on Jan 02, 2017

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see the video and lube correctly. 2) go to my personal TIPS for motor help.3) however you must see the voltage in the plate of motor. the tolerance will be +- 10% of voltage. can be voltage continuosly or alternating voltage.God bless you6527db9f-a9f8-47a6-9208-af2b680ea3a0.jpg

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Belt stops during workout and have to step offf


you need LUBE in according with the instruction manual maintenance schedule . You have a deck belt worn 2) Test the drive Belt for replace 3) Test the input voltage motor, if there are the motor need repair 4) Test the output voltage from motor board, for input main motor, if there are NOT the board is faulty.
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HI,
You have to check the speed sensor near the mottor pully. If the speed sensor is fulty or if its coverd with dust then speed can vary. Another reson for speed variation is the Faulty carbon brush in the motor. I have added the picture of speed sensor for reffarance . Also the link will help you for the regular maintenance of the treadmill.

How to repair treadmill


2_28_2012_6_20_21_pm.jpg
Ajin

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not sure if there is a weight limit but did you check the belt tension.
front or rear roller should have an adjustment screw on both sides to tighten the belt. this could be the solution to your problem

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