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Belt tension on G0715P

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Forum topic by 716 posted 01-20-2016 07:03 AM 371 views 0 times favorited 7 replies Add to Favorites Watch
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716

502 posts in 381 days


01-20-2016 07:03 AM

The manual for this saw states the belt should give in about 1/4” when pressed by hand. Mine is more than that and feels a bit loose. The problem is that I cannot adjust it any further, the motor is at the very end of travel. Shouldn’t it be somewhere in the middle for a normally tensioned belt ?

-- It's nice!


7 replies so far

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716

502 posts in 381 days


#1 posted 01-20-2016 09:52 PM

Nobody knows ? No wonder, Grizzly tech support does not know either. It is probably me doing something stupid and confusing everyone around.

-- It's nice!

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MPMaint

47 posts in 350 days


#2 posted 01-20-2016 10:25 PM

Could be a couple of things.
First, is it the correct belt? Sorry but I have to ask.
Second, “by hand”. The only way to determine the proper tension is with a gauge and a spec.
Most likely is either the belt is worn or the pulleys are worn and the belt is sitting low in the pulleys. Check the pulleys for wear where the belt rides. Also, get a new belt.

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firefighterontheside

13485 posts in 1321 days


#3 posted 01-20-2016 10:29 PM

I would guess if the motor is at the end of its travel it may be too tight and you are pressing too hard to test it. It’s kind of a qualitative test and not quantitative. It should depress 1/4” with a reasonable amount of pressure. What’s reasonable? I don’t know.

-- Bill M. "People change, walnut doesn't" by Gene.

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716

502 posts in 381 days


#4 posted 01-20-2016 10:56 PM

It is a brand new saw, so worn out explanation is hardly likely. I was surprised to read the part of the manual that says: Apply moderate pressure to the belt. The manual writer even produced a picture of a hand touching the belt.

Apparently wrong or defective belt is the most probable explanation.
In any case since the motor is already at the very end of travel, even if the tension is correct it would be impossible to adjust later when the things start wear out a bit.

-- It's nice!

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Kazooman

628 posts in 1416 days


#5 posted 01-20-2016 11:20 PM

I have also had a hard time with instructions like that, where they suggest a certain deflection with “moderate pressure”. Such a bogus way to describe how to adjust the tension. Your moderate pressure might well be much less than mine, given that I am such a muscular hunk. The problem arises in that the average owner has nothing that could be used to calibrate the amount of pressure being applied to the belt.

That said, I agree that if you can easily achieve the prescribed deflection with the motor at the limit of the adjustment stops, then you have a problem. Another belt of the original size, or one slightly smaller would seem in order.

I am not familiar with this particular saw, but if it is the typical design that relies on the weight of the motor to control the tension on the belt you should be fine going with a new belt (shorter or original length) that allows you to seat the motor somewhere within the normal range of adjustments.

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716

502 posts in 381 days


#6 posted 01-21-2016 12:18 AM

Most of the modern machinery come with very vague descriptions. No tolerances of any kind, no torques for threaded hardware, no nothing. It is not Grizzly specific, I am yet to see a machine that would list for example acceptable vibration, although I am sure they have it in the company internal documents. Good for the manufacturers though to leave the consumer with no proof that anything is wrong. “Is the belt loose ? It is because you did not apply “moderate pressure”. I would guess that the “moderate pressure” is the pressure that deflects the belt by 1/4” no matter how loose it it :-)

-- It's nice!

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gfadvm

14940 posts in 2154 days


#7 posted 01-21-2016 01:22 AM

I have that saw and the tension on my belt seems less than recommended but NO slip or vibration. I wouldn’t overthink this. Just put the belt on and test it on some wood.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

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