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#4720742 - 04/08/18 04:56 PM Torque Wrench Question
TheLawnRanger Offline


Registered: 03/18/18
Posts: 503
Loc: Mississippi
I forgot to set my torque wrench back to zero overnight. I set it back early the next morning. Would this be enough to mess up the calibration?
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#4720744 - 04/08/18 04:58 PM Re: Torque Wrench Question [Re: TheLawnRanger]
tig1 Offline


Registered: 01/03/09
Posts: 13725
Loc: Illinois
No.
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#4720749 - 04/08/18 05:01 PM Re: Torque Wrench Question [Re: TheLawnRanger]
Rand Offline


Registered: 08/20/03
Posts: 12740
Loc: NE,Ohio
No, one of mine says to keep it on its lowest setting not to set to 0.(which was news to me)
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#4720760 - 04/08/18 05:17 PM Re: Torque Wrench Question [Re: Rand]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6388
Loc: USA
Originally Posted By: Rand
No, one of mine says to keep it on its lowest setting not to set to 0.(which was news to me)


approved

The Harbor Freight torque wrenches say to do this

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#4720762 - 04/08/18 05:22 PM Re: Torque Wrench Question [Re: TheLawnRanger]
TheLawnRanger Offline


Registered: 03/18/18
Posts: 503
Loc: Mississippi
I keep it at the lowest setting which I think is zero with the tension loosened.
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'99 Cavalier 5w 30 SuperTech conventional
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'12 Colorado 5w 30 Magnatec full synthetic
*regular Wix oil filters for all

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#4720792 - 04/08/18 05:44 PM Re: Torque Wrench Question [Re: TheLawnRanger]
SOHCman Offline


Registered: 03/29/10
Posts: 1336
Loc: USA
taking it down to zero or at least the lower 10% of the range is best practice.
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#4721070 - 04/08/18 11:25 PM Re: Torque Wrench Question [Re: TheLawnRanger]
Johnny2Bad Offline


Registered: 05/20/13
Posts: 1910
Loc: Saskatchewan, Canada
As everyone says, don't fret over it, and a little above zero.

If you are really worried about it ... some people are that way ... you can take it to a machine shop and have them (re-)calibrate it, it's a simple job, won't cost much. Were it me, I'd wait a couple of years and do it then, though.

Worst thing you can do is drop it. (Even then you are probably OK, depending, but not for certain). Keep in in the case when not in use.
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#4721269 - 04/09/18 08:21 AM Re: Torque Wrench Question [Re: TheLawnRanger]
bmwpowere36m3 Offline


Registered: 04/29/07
Posts: 687
Loc: Connecticut, USA
We keep them at 20% of scale at work (aerospace). At home I've kept anywhere from 0 to 20%, it doesn't really matter. I also send them out once in a while for calibration.

Some wrenches shouldn't not be brought down to zero or below their scale (mechanism inside will loosen), other is won't matter, and even others will have a stop to prevent you from backing off too much.

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#4721304 - 04/09/18 08:58 AM Re: Torque Wrench Question [Re: bmwpowere36m3]
Trav Offline


Registered: 11/20/06
Posts: 19348
Loc: MA, Mittelfranken.de
That's why I use split beams you don't have to do anything with them after using it.
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#4722426 - 04/10/18 07:12 AM Re: Torque Wrench Question [Re: TheLawnRanger]
doitmyself Offline


Registered: 06/03/02
Posts: 6275
Loc: MI
Sturdevant Richmont presents an argument that "some" torque wrench designs will allow the wrench to become uncalibrated if set to zero and all spring pressure is relieved.

http://www.srtorque.com/error-proofing-t...-quality-score/

"When taking pressure off the spring, the design may allow the wrench to relieve pressure on the torque block. This can allow the torque block to disorient, shift. Some wrenches can be set to zero pressure on the spring or have the handle further away from the spring. Not only can the torque block disorient, it can even fall out of place in the wrench.

If the torque block disorients, calibration is lost. Repeatability becomes an issue because the block no longer functions as designed. Typically in the tilt block design, the block itself is not square. That means when the tilt block is reoriented and is on it's side, the torque value has changed without you knowlege."

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#4722446 - 04/10/18 07:41 AM Re: Torque Wrench Question [Re: TheLawnRanger]
demarpaint Offline


Registered: 07/03/05
Posts: 30028
Loc: NY
I have an Craftsman Digitorque Wrench and it says to keep it set to 25% capacity. If accidentally left above 50% for more than a few hours set the wrench to the lowest setting and leave it here for a few minutes before using it. Calibration should be checked after 10,000 cycles. I've had this wrench since the early 90's and it is still accurate, checking it against a beam style wrench.
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#4722754 - 04/10/18 01:14 PM Re: Torque Wrench Question [Re: Trav]
EdwardC Offline


Registered: 11/14/13
Posts: 1889
Loc: Chicago, IL
Originally Posted By: Trav
That's why I use split beams you don't have to do anything with them after using it.

Yep, split beam is the way to go for anything I need torqued!

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