Question about Precor 905e 9.2 9.20 9.20s 9.1 9.2s Motor Hood Cover

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My Precor 905e - sometimes while I'm walking, it suddenly seems like the treadmill is going to stop, it hesitates for a second, then it goes back to being fine. This is always a bit unnerving. What do I do to fix it? I've already had the belt centered, tightened etc.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 6 Answers

SOURCE: Precor M9.21 Treadmill - Stops under load

This probably did not happened suddenly right? the problem is not the motor however you can easily check the blue capacitor for peace of mind. with the power disconnected, disconnect one side off the capacitor from the top. with a ohm meter put the 2 probes on the cap,you will ear a temporary beep sound from your meter, then reverse your probes on the capacitor and again a temporary sound that mean your capacitor is good and your motor will run OK.

Your problem is more then likely your run belt and bed assembly. When new, these are coated with a wax of some kind for slipping, has you use the machine wax wears off, and so is the belt. You can see a black rubber dust at the rear of the machine. And so resistance increase when pressure is applied on the running belt.

Just behind the on/off switch where the power cord goes in, there is a auto reset 15 amp breaker that trips when too must resistance against the motor increase the amperage over 15amps. At 7 min/m on your speed setting and if the belt is adjusted correctly with nobody on, the motor pull about 6amps, with someone like me 180lbs, the motor pulls an avg of 10amps with a new belt.

If you have a clamp amp meter you can test it yourself.

2 parts you will need to fix this; 50985-101 (bed assembly) and 36355-101 (run belt 17 X 110) This is real easy to install.

make sure these parts are for your machine model # as they did increased the width of their belt over the years

Since 1998 I had to replace these parts 2 times with an average of 3 people using the treadmill every day. This is a good machine and if everything else is good it's worth it. I paid $300 for these parts, i'm sure if you shoppe a little you can do better.

Have a good one

Ben

Posted on May 26, 2009

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SOURCE: c956 precor treadmill

Hi
not to sound funny but are you sure that you have this tread set in the units (mpg/kph) that you require. i have worked in loads of gyms and its a common problem that people think the belt is running to fast because its set in kph and that thinks its in miles eg 9mph = 14.5kph
you can check and change the units in the club setting menu.
hope this helps :)

Posted on Feb 12, 2010

maxtreadmill
  • 832 Answers

SOURCE: Hi, my Precor 9.21 treadmil was working fine,

Unplug unit remove motor shroud take a look at incline motor frame assembly, by the sound of it maybe metal fatigue failure disengaging the incline motor itself and could have damage it. This would be my best guess if so contact Precor.

Posted on May 20, 2010

  • 48 Answers

SOURCE: treadmill precor 655 runs suddenly fast then

speed sensor error
check clean or replace

Posted on Nov 25, 2010

Testimonial: "easy was it it was good after i tighten the screws of speed sensor"

ercupa190
  • 12223 Answers

SOURCE: I currently replaced the walking

Dear Sir:
I can read you trouble, and follow the next steps:
ALIGNING AND ADJUSTING THE RUNNING BELT
The correct alignment of the running belt is critical to the smooth operation of the treadmill. The belt is properly aligned at the factory. However, during shipping and handling or by use on an uneven surface, the belt may move off center and require a few simple adjustments. Before aligning the running belt, check its operation by following the procedure in Checking the Alignment of the Running Belt. If you determine that the belt needs alignment, follow the instructions here. CAUTION: Special care must be taken when aligning the running belt. Turn OFF the treadmill while adjusting or working near the rear roller. Remove any loose clothing and tie back your hair. Be very careful to keep your finger or any other object clear of the belt and rollers, especially in front of the roller and behind the deck. The treadmill will not stop immediately if an object becomes caught in the belt or rollers. Realigning the belt takes a few simple adjustments. If you are unsure about this procedure, call Precor Customer Support (see Obtaining Service.) Take the following steps to align the running belt on the treadmill. To ensure your safety, make all adjustments while the treadmill is OFF. 1. Make sure the treadmill is OFF and the running belt has completely stopped. 2. Locate the right belt adjustment bolt in the rear end cap of the treadmill. (To determine left and right, stand at the rear of the treadmill and face the display.) See Diagram 24. The direction you turn the bolt depends on how the belt is tracking. Make all belt adjustments on the right rear corner bolt using the hex key provided. • If the belt is off center to the RIGHT, turn the adjusting bolt ¼ turn clockwise, which moves the running belt to the left. • If the belt tracks off center to the LEFT, turn the bolt ¼ turn counterclockwise; this moves the belt to the right. Important: Do not turn the adjusting bolt more than ¼ turn at a time. Overtightening the bolt can damage the treadmill. 3. Turn the unit ON. 4. Stand beside the treadmill and press QUICKSTART. 5. If you are prompted for a password, press INCLINE ??¼, SPEED ??¼, SPEED ??². The running belt starts automatically after the 3-second countdown appears on the display. 6. Press the SPEED ??² key until the display shows a speed of 3 mph (5 kph). 7. Walk around to the rear of the unit and observe the running belt for a few minutes. The belt should run centered along the running bed. If the belt drifts off center, you will need to make adjustments. CAUTION: If you hear any chafing or the running belt appears to be getting damaged, stop the running belt immediately by pressing the red STOP button. Contact Precor Customer Support. 8. If the belt needs additional alignment, repeat steps 1 through 7 until the belt is properly aligned. 9. After aligning the belt, press the STOP button and RESET. Turn OFF the treadmill. Tighten any loose fasteners or other components on the equipment. If you hear unusual noises or you feel that the treadmill is in need of repair or service, contact Precor Customer Support. Refer to Obtaining Service.
Finally, check if the power cord is loose, connect it again. a) See if the breaker of Home is tripped? b) See if the breaker of the Treadmill is tripped. If do the Belt is very Tighted! loose a little. Try again.
Thank you in advance, if you need assistance, you can contact me, Blessing. sincerely.
E. CUADRA Managua, Nicaragua. C.A.

Posted on Sep 26, 2011

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2) LUBE the rollers bearing very well too
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see the block diagram, and see my personal TIPS.
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I bought a second hand 9.21 Treadmill.The machine suddenly stops when I'm running on it. Sometimes after 30 minutes. Sometimes immediately. I had an electricien check the electrical network and that was...


Sounds like the wax lubrication has finally boiled off the belt the easiest way eliminate this problem is to rewax the deck. You may purchase this @ http://www.gympart.com/ or call them 1-800-496-7278 I would recommend what is call WAX BLAST they come in 3oz or 6oz bottles.
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Overheating??


If you are able tho rest it then I suggest this procedure as I have for all Precors: Sounds like the wax lubrication has finally boiled off the belt, the easiest way eliminate this problem is to rewax the deck. You may purchase this @ http://www.gympart.com/ or call them 1-800-496-7278 I would recommend what is call WAX BLAST they come in 3oz or 6oz bottles.
Now the fun part to apply this product you must first get the treadmill and walk on it for about 5min to heat up the deck, then stop the unit with your product go to upper third of the belt lift edge of the belt stick the nozzle between the belt and deck squeeze the bottle approx. amount 1 tbs of wax to the center then get back on the treadmill and walk for 10 min this is to heat up the wax so that belt will act like a wick to absorb wax! This should be done every 3 months or so. Their a catch if this does fix the problem you may be investing in a new belt and possible and new deck. Hope this take of it!!

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