I just lubed the belt, but when i retightened and centered belt, it goes off to one side when in use.
Put machine in the upright position and check the under side of the belt for loose material. If there is the belt needs replacing ,do not use machine. If ok the put machine down ready to use .
Turn machine on to 4 kph
Turn the bolt clockwise on the side the belt is rubbing.
Turn 1/2 a turn wait about 5 secs each time until the belt moves across.
SOURCE: Tread is sliding and rubbing agianst right side of track.
Make sure treadmill is running when you adjust belt. The treadmill belt tracks as the belt goes around. I usually put machine on 2-2.5 if belt is not rubbing instantly. If belt is already against plastic, turn adj. counterclockwise on the opposite side about one full turn. You can usually move belt with your foot to see if it aligns any with turning on the treadmill. Once belt is not rubbing, turn treadmill on and continue alighing the belt.
SOURCE: Adjusting the walking belt
Here are two solutions one is to get the belt centered on the treadmill
and the other is to tighten the belt.
There should be two bolts
in the rear of the treadmill, one on each
side. These bolts adjust the rear roller of the treadmill. The walking
belt will always go to the side that is looser. To get the belt back
on track, (if you can start the treadmill so the belt is running)
tighten the bolt on the side that the belt has slipped to. Tighten the
bolt a little bit at a time. If you tighten the bolt too much, then the
belt will go to the other side.
To tighten the belt, start by
locating the two bolts that adjust the
rear roller (one on each side of the unit in the back). Run the unit at
about 3 mph. Tighten the bolts a 1/4 turn at a time. Make sure that
what you do to one side, you MUST do to the other side or the belt will
get off center. After you tighten it 1/4 turn, check the belt to see if
it is still slipping. If it is then tighten the belt 1/4 turn again.
Continue until the belt does not slip, but do not tighten the bolts more
than 2 full turns.
SOURCE: I have a Proform 380 Treadmill. When the treadmill
If the walking belt is off-center, first remove the key and UNPLUG THE POWER CORD. If the walking belt has shifted to the left, use the allen wrench to turn the left rear roller bolt clockwise 1/2 of a turn; if the walking belt has shifted to the right, turn the bolt counterclockwise 1/2 of a turn. Be careful not to overtighten the walking belt. Plug in the power cord, insert the key and run the treadmill for a few minutes. Repeat until the walking belt is centered.
SOURCE: On my Sears ProForm 730 treadmill, I cannot make
The belt does not need to be replaced more than likely. The problem is probably because that adjustment bolt is stripped out causing it loosen and keeping it over on that side. ProForm sells star washers that help them stay steady and not slip out. I would call them and ask for a couple of star washers and a new adjustment bolt for that left side.
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