My treadbelt keeps sliding to the side....tearing the belt. It destroyed the one side and is now sliding to the other..getting hung up. tried tightening the belt...but doesnt seem to help. would a new treadbelt do the trick? or is there more causing the problem?

there are two bolts at the end of the treadmill.one on each side. usually an allen head. tighen clockwise the side that the belt is closest to about a full turn. turn on treadmill about 2mph. watch belt run. it will take 20 seconds to adjust. with unit running adjust till centered.only go 1/4 to1/2 turn at a time and let it adjust

see the video and proceed according. God bless you

Your problem is the ITB. The transfer belt is not centered. It is sliding toward the front of the machine and hitting a sensor there. If you pull the ITB you will see a small pivot sensor that the belt is pushing back. This system prevents the belt from running off the edge and destroying itself. What is wrong is that something is allowing more tension on the back side of the belt and it moves forward. I have found broken plastic pieces in the ITB unit that release the tension on the back side of the unit. Unfortunately, I don't think the plastic pieces are available so you need to change the ITB. That should solve your problem.

Don't know what size allen wrench you need but here are some resources for you:

Tutorial On Adjusting Treadbelt

Search for fitness servicers in your area

List of different versions of the Proform 530x, where you may be able to find an owner's manual, lube, a new treadbelt, or any other parts you may need.

You will probally need to replace it, here is a link that will help Replacing a door seal
I have used 100% silicone to plug the holes. This has held up for several weeks without leaking. I clean the area with alcohol and rub a layer of pure silicone thru the tear trying to get it on both sides. Try to keep the inside layer not to thick so clothes do not get hung up on it, let it dry for 24 hours and it should hold.

It's possible that your treadbelt needs lubrication, or simply adjusting. Here is a tutorial on adjusting your treadbelt:

Here is one link to purchase a lube kit, there are probably many others online also:

Should you actually need to purchase a new treadbelt, I would try to identify which specific model of the Proform 530 you have from this list and then in the parts list for that treadmill scroll down to "Treadbelt"

The treadbelt can be installed by removing the front roller, the drive belt, rear roller and screws in the siderail. You do not have to remove both sides, just lift the deck and slide new belt on. To save yourself some agravation, you may cut the old belt off.

Exercise equipment service Treadmills Ellipticals and Bikes Parts Assembly... 877-805-1030

Unplug unit remove motor shroud so you can see the drive belt, plug in unit then start it you will be able to see whether the drive belt or running is actually causing the problem.If it is the running belt then turn both rear roller adjustment bolts clockwise in equal quarter turn increments until treadbelt stops slipping. NOTE: Be sure to run on treadbelt to ensure that the treadbelt does not slip while under load. Use 1/4" allen wrench
If the drive belt is slipping then to adjust the belt you must loosen the adjusting bolt on the motor frame then hold the motor by hand applied tension to belt then tight bolt you should be able to twist the drive belt no more then 45 degrees if you can repeat adjusting process.

That pad is usually made of cork or graphite It's used to give the back side of the sanding belt a soft and slippery surface to run on so it won't over heat/tear and fail. The part you need is P/N 2601098037 Any Bosch service center will be able to get one for you. Go to BoschTools.com and look under "find a service center"

"The best treadmills are those that provide you easy access to belt tracking. But, even the best treadmills with the most easily accessible belt tracking are also susceptible to stretch slightly under initial use. That is why it is important that you adjust the tread belt every so often to keep it away from stretching. Most manufacturers include the Allen wrench (a tool consisting of a hexagonal head and an L-shaped bar) in the package when you buy a treadmill from them. Use it to tighten both the belt adjustment screws clockwise. If your manufacturer did not supply you with an Allen wrench, use another of the right size. A ¼ turn, clockwise should tighten treadbelt if it has loosened. The screws for belt adjustment are usually located at the rear end of the treadmill. Some belts do require looser running than others so don’t be surprised if your treadbelt is a little loose even when you haven’t actually used it. Check the user’s guide before making adjustments just to make sure that whatever you are doing is correct. Moreover, be sure to keep the belt running at a low speed of around 3 mph when adjusting the belt tracking. This is the ideal speed when making any adjustments with the screws. Maintaining your treadmill is necessary to upkeep it's performance and looks. A little bit of adjustment here and there can make your treadmill a life long companion. "