How do you correctly use a torque wrench

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I would like to get a poll on how to use a torque wrench. I use to be in the Air Force as an F-16 crewchief and got out a few years ago. I have a 17 year old son that acts like he knows more than me and well if you have teenagers you know what I am talking about. Is it using a torque wrench correctly if you use the torque wrench to remove the torqued bolt off a pully? I would like for as many people to give me (my son) instructions on how to use a torque wrench CORRECTLY PLEASE cause he will never believe me. And second, He took the torque wrench head apart. Will that mess up the calibration on the torque wrench or not? Please tell me so that way I can tell my son. Thank you so much. Please help me..

maribro1,

Sounds like your problem with the Tork Wrench, started about 10 years ago, when we both were putting out lives on the line, for Family and Country.
As a Veteran, THANK YOU, for sharing that commitment with me.

No doubt you're talking about the "Clicker" type bar, not the "Torsion" type.

Those Clickers are assembled in a near "Sterile" environment.
Any contamination on the cam, springs or stops, could seriously effect the Tork delivered, and subsequently break a bolt off, or in the opposite, cause a Headgasket to leak over into the waterjacket or adjacent cylinder. Numerous problems could be quoted.

Being 17, headstrong, obstinate and egosentric is not a condition I am unfamiliar with, personally!

But, after having to pull the Head off AGAIN for the second time, to roll a Aircraft Grade Bolt out with a Hammer and Punch, sorta deflated my ego a bit, and I started paying attention,
First: to the operating instructions. and
Second: to a Motors Manual. I didn't have a Dad such as you, who cared enough to try to teach me something.

In sort of an odd way, I envy your son, even though now it's difficult, but, if he has even a lick of sense, at some point he's going to realize what a valuable comrad and friend he could have in you, and then, all the trouble, time, and effort you put into the relationship, will be SO worth it.

So, be patient my friend, and, that's how you use a Tork Wrench.

Have a good Day!
S.W.

Post edited by: SWHouston, at: 2008/08/10 20:16

Maribro, welcome to the forum

Both you and SWHouston: thank you for your service!

The Tourq wrench used properly:

First grasp the ratchet head and inspect the rubber end for any irregularities
2d walk up behind the fool that uses it to UNscrew a torqued bolt
and apply to his head at a velocity not to exceed 1 meter per second.

now that you have his undivided attention explain that the torq wrench
is an apply only device (( this can be demonstrated by attempting to
UNdent his or her skull (velocity not to exceed 1 meter per second.))

Figure 3c shows the clicker torque wrench, which is sometimes called a digital wrench.
A clicker torque wrench works by preloading a "snap" mechanism with a spring to release at a specified torque.
When the mechanism releases the ratchet head it makes a "click" noise

The clicker wrench is much easier to use(Than A Beam Torque Wrench)
because it is easy to set the desired torque and just pull until you feel the click.

The ratchet head also makes it easy to use in confined spaces.
It is good practice to set a clicker wrench to its lowest setting before putting
it away to prevent the spring from taking a set.
Avoid rough handling and dropping because it can damage the
mechanism. Do not use the torque wrench to loosen tight fasteners
since this may damage the calibration.
www.algeo.com/~joe/KIAT/kiat_3.htm


the first step was taught to me by my big brother who learned it from our dad ...it seems we both wanted to use it for a std wrench at one time or another and needed to be shown explained its true use, and why...
I never forgot and was happy to not be caught by the old man.
he used the english velocity measure of miles per hour !!!

Post edited by: K9000wner, at: 2008/09/13 19:44

I read this to my son, and he finally understands what you and I were saying. Thank you for your comment. I really enjoyed it.

Marilynn ::

maribro1,

I know how ya boy is dare with his stubbornness, I'm about his age and gets dat way sumtime too.
If what you said just now was about Mr. Houston post, about ya boy finally understandin? Dat work right good for me too, I gots to read his post more dan once too. He be the kind of fella dat can say more in one sentence, than a lot of people can in a whole book.
I hopes ya is gettin along betta wid ya boy dare forshore.

Cavil

Cavil,

Wow !

Have a good Day !
S.W.