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How to Fix the Treadmill Belt: Simple Instructions

From understanding main problems with common brands to adjusting general alignments - every advice on how to fix the treadmill belt
Last updatedLast updated: August 29, 2022
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Apart from being one of the most formidable cardio equipment for burning calories, treadmills provide multiple advantages. The smooth surface means that there is little chance of tripping, compared to running or jogging on trails and sidewalks. Users can adjust workout settings such as incline and intensity and customize the programs to their fitness level, and some models come with heart rate monitors and step counters to track your progress.

As with any other machine, a treadmill can malfunction due to improper or frequent use. We have provided information on how to fix the treadmill belt, including the tools and tips you need to perform the process and minimize downtime and damage.

Common Problems with Treadmill Belts

A loose treadmill belt is one of the most common problems that home gym owners come across. The belt should be centered but over time, it might wear out and become frayed or stretch and slip to one side. In this case, you must adjust or replace it.

Machine leveling

How to Fix the Treadmill Belt: Simple Instructions

You have bought the best treadmill for seniors and then one day you realize that you cannot center the treadmill belt. What do you do? The most likely reason for a treadmill belt sliding to one side is an uneven floor.

Let’s explain how to center treadmill belts with a simple procedure that will keep the treadmill stable as you exercise.

First, place the treadmill in place and check the level of the machine and the floor. Next, adjust the levelers so that they are in contact with the floor and at a height where they cannot unscrew or detach from the treadmill.

Unplug the treadmill and turn the belt to its seam so the seam is even and that the seam and the belt are stitched at an angle.

Use an Allen wrench to turn the left bolt ¼ turn in your desired direction and then allow the machine to run for 90 seconds. Hold the safety key as you let the belt absorb the adjustment so you can quickly turn off the machine and make more adjustments if the treadmill belt is still sliding to one side.

Belt separation

How to Fix the Treadmill Belt: Simple Instructions

Sometimes you might notice the belt slipping or drifting when you step on it or the gap between the board and the belt narrowing more than usual. You should learn how to fix a slipping treadmill belt so that it does not affect your workout. To adjust a loose treadmill belt, always unplug the machine Trusted Source Treadmill Hand Injuries Among Children: A Retrospective Case Series From Hospitalized Patients With the progress of modernization, treadmill hand injury in pediatric population is taking on a global trend in recent years. The purpose of this study was to investigate the epidemiology and clinical features in a developing country, thereby providing some experience in the treatment and prevention of this particular type of injury. www.frontiersin.org for safety purposes before working on it. Next, center or align and tension the belt as you run the treadmill at a speed of up to 1 mph.

There are two ways you can adjust a treadmill belt sliding to one side. If it is on the right side, turn the left bolt counterclockwise using an Allen wrench and use the part line or motor cover marking as your reference to align the belt. Repeat the process until you center the belt.

To realign a treadmill belt that is running on the left side, follow the same procedure as above but turn the left bolt clockwise a ¼ turn instead of counterclockwise.

You can unscrew the end caps to easily access the adjustment bolt.

Replace the belt if you find the seam separating.

Rollers mounts

How to Fix the Treadmill Belt: Simple Instructions

Another tip offered in guides on how to fix the belt on a treadmill is to check the roller mounts. The best treadmill under $2000 is less likely to have this issue but a lot of manufacturers use cheap plastic to secure the bolts, rollers and tensioning components. Once the plastic cracks or fails, the rollers might start shifting and misalign the treadmill belt unless you replace the flimsy plastic.

To realign and center a treadmill belt that is affected by shifting roller mounts, unplug the machine and remove the screws at the rear roller.

Loosen the bolts and remove the rear roller and clean any accumulated debris.

Remove the motor cover to remove the drive belt from the pulley and then loosen the bolts in the front roller. Next, clean the front roller.

Remove the deck hardware.

Install the deck and belt with the mounting holes aligned, and then replace the front and rear rollers. Tighten the rear roller bolts to tighten the treadmill belt and then install the motor cover.

Power on the machine and run it at a slow speed of up to 1 mph to check whether the belt is properly aligned. Tighten the right bolt if the belt moves on the right side and tighten the left bolt if it moves on the left side. Make small adjustments until you center the treadmill belt.

Other options

We have listed solutions to how to fix a slipping treadmill belt. However, if a loose treadmill belt is not the culprit and there is still a hitch with the belt, you should check that the speed is configured to the recommended setting.

For advice on fixing treadmill belts that heat up, try lubricating the belt to reduce friction between the belt and deck Trusted Source A new method for measuring treadmill belt velocity fluctuations: effects of treadmill type, body mass and locomotion speed - PMC Treadmills are essential to the study of human and animal locomotion as well as for applied diagnostics in both sports and medicine. The quantification of relevant biomechanical and physiological variables requires a precise regulation of treadmill belt velocity (TBV). Here, we present a novel method for time-efficient tracking of TBV using standard 3D motion capture technology. www.ncbi.nlm.nih.gov . Otherwise, too much friction might make the treadmill to suddenly stop working and shut down.

Adjusting Treadmill Belt

How to Fix the Treadmill Belt: Simple Instructions

The following section explains how to center treadmill belts when the machine is on or off.

Tools you’ll need

  • Hex Key or Allen wrench since most models have Hex screws
  • Screwdriver, depending on the type of treadmill

While machine is off

To repair a treadmill belt with the machine off, unplug the equipment and locate the screws which are mostly found next to the roller axle.

Turn the machine on and set it to a speed of 1 to 3 miles. Next, adjust the screws using the same steps we have listed below under how to center treadmill belts while the machine is on.

While machine is on

The best treadmills under $600 typically come with an Allen wrench or Hex key. Use the Hex Key or Allen wrench to turn the screws anticlockwise and tighten the belt or to turn them clockwise to loosen the belt. Plug in the machine and check whether the belt requires further adjustment. Tighten the left screw to center the belt to the left and tighten the right screw to center the belt to the right. You will know you have fixed the slipping treadmill belt when it is tightened and centered between the boards.

Remember to turn the screws to a ¼ turn and to unplug the treadmill whenever you are adjusting it.

Fixing Treadmill Belt by Brand

How you tighten a treadmill belt will vary according to the brand you have since these cardio machines are available in different designs. We recommend checking your user manual for the right instructions.

NordicTrack

If your NordicTrack treadmill belt is slipping, unplug the machine and use the Allen wrench provided with your treadmill to turn the bolts to the right for a belt that is on the left side and to the left for a belt that is on the right side. Make the turns in ½ turn increments and then ¼ turns for precise calibration. Restart the treadmill and run it for a few minutes at low speed.

Repeat the adjustment process until you center the treadmill. That is how you fix a loose Treadmill Doctor Walking Belt for The Nordictrack T 6.5 S properly.

Xterra

For Xterra treadmill belt adjustment, run the machine at a speed of 3 mph and then turn the tension adjusting bolts ¼ turn on both sides evenly with the Allen wrench provided. Next, allow for a few minutes to see whether the belt will adjust itself. If it does not, repeat the ¼ turns until the belt runs at the center of the deck.

As a reminder, Xterra does not cover treadmill belts that are damaged as a result of incorrect tension adjustment. So, be sure to study your user manual for proper instructions on how to fix the treadmill belt.

Proform

Unplug the machine and tighten the treadmill belt by turning the crews on the idler roller using the Allen wrench. Make the adjustments on both sides. Next, power on the treadmill, and press start after inserting the safety key. Test the Treadmill Belt for ProForm 590T & 615T Treadmill for a few minutes and repeat the process until you realign the treadmill belt.

Final Thoughts

A treadmill that is sticking cannot provide a steady and smooth running surface; you must adjust it to realign it to the center. This problem usually lessens or disappears as you continue using the belt. Too much tightening or friction can also cause the problem of the treadmill belt sliding to one side. If you lift the belt in the center, it should leave space of two to three inches to maintain proper tension. If you buy your machine from a reputable brand, it comes with an Allen wrench or Hex Key for assembly and a manual guide with step-by-step instructions on how to fix the treadmill belt of your specific machine. We strongly recommend turning off and unplugging the treadmill before you start making any adjustments.

References

1.
Treadmill Hand Injuries Among Children: A Retrospective Case Series From Hospitalized Patients
With the progress of modernization, treadmill hand injury in pediatric population is taking on a global trend in recent years. The purpose of this study was to investigate the epidemiology and clinical features in a developing country, thereby providing some experience in the treatment and prevention of this particular type of injury.
2.
A new method for measuring treadmill belt velocity fluctuations: effects of treadmill type, body mass and locomotion speed - PMC
Treadmills are essential to the study of human and animal locomotion as well as for applied diagnostics in both sports and medicine. The quantification of relevant biomechanical and physiological variables requires a precise regulation of treadmill belt velocity (TBV). Here, we present a novel method for time-efficient tracking of TBV using standard 3D motion capture technology.
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