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Old March 12th, 2010, 01:20 AM   #1
Betlog
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Torque wrench

I have a torque wrench from Harbor Tools and when using it to loosen a bolt, it gave on me a couple of times. That is, the resistance from the wrench was not strong enough to loosen the bolt so it ended up moving past the lock point... a similar feeling to stripping a screw. Anyway, it still works but am curious if it is now mis-calibrated and that if I should get a new one? Thoughts?
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Old March 12th, 2010, 02:35 AM   #2
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I don't think you're supposed to use torque wrenches to loosen bolts. Only to torque them down.
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Old March 12th, 2010, 05:06 AM   #3
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Use a breaker bar to loosen. It's long like a torque wrench but solid like a normal one and usually includes a nice comfy grip.
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Old March 12th, 2010, 05:12 AM   #4
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Quote:
Originally Posted by n00br1d3r View Post
I have a torque wrench from Harbor Tools and when using it to loosen a bolt, it gave on me a couple of times. That is, the resistance from the wrench was not strong enough to loosen the bolt so it ended up moving past the lock point... a similar feeling to stripping a screw. Anyway, it still works but am curious if it is now mis-calibrated and that if I should get a new one? Thoughts?
When the wrench "gives", it has reached the torque setting! As others stated, you shouldn't be using it for anything other than a torque wrench.

1/2" Breaker Bar from Amazon:

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Old March 12th, 2010, 10:18 AM   #5
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Oh definitely, if the torque wrench was used o loosen a bolt, it's probably badly damaged now. Take it in the shop for recalibration and verification.

Torque wrench are precision tools. They should not be used for any thing other that their purpose, to tighten a bolt at a specific value.
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Old March 12th, 2010, 01:11 PM   #6
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Use the 20% off coupon from this link and go get yourself a proper breaker bar.

There's also a coupon for a 1/2" torque wrench in case you damaged yours by using it to loosen.

http://www.harborfreightusa.com/usa/...e=magurl1.html

Last futzed with by Ramen; March 12th, 2010 at 07:55 PM.
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Old March 12th, 2010, 07:38 PM   #7
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Thanks. I bought a new one.... and a breaker bar as well.
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Old March 12th, 2010, 08:55 PM   #8
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Quote:
Originally Posted by Ramen View Post
Use the 20% off coupon from this link and go get yourself a proper breaker bar.

There's also a coupon for a 1/2" torque wrench in case you damaged yours by using it to loosen.

http://www.harborfreightusa.com/usa/...e=magurl1.html
Props to on that helping hand Ramen.
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