View Full Version : Torque Wrench
02-26-2008, 11:59 PM
I bought this old style torque wrench with the needle and dial.I need to apply 300 in# and 225 in# torque on some compressor bolts.The wrench is marked for ft#.I guess I can just devide the 300in# by 12 and use the 25ft# marking and so on.
02-27-2008, 12:18 AM
That will work, but they are not famous for their accuracy.
02-27-2008, 06:55 PM
you would be better off with the 25 dollar "click type" from autozone, I use one for my wheels. Sears has some good prices on torque wrenches, i used the craftsman ones to rebuild my last engine.
02-29-2008, 11:00 PM
I'm confused as to which torque wrench you have. If it is the style with the long strait pointer then good luck with the accuracy but it should be enough to get the job done. If it is the style that looks real heavy duty and has a dial and a pointer then I think that you probably have one of the more reliable ones out there. The old addage is to only use torque wrences for tightening, never to loosen. Something about keeping the tool accurate, I don't know.
02-29-2008, 11:41 PM
You can get torque wrenches that read inch-lbs, that would be better than trying to covert foot-lbs to inch-lbs. Not real sure where to find them but they are at some part/hardware stores.
03-01-2008, 08:45 PM
Here's some interesting info.............
Click type torque wrenches are more precise when properly calibrated—however the more complex mechanism can result in them losing calibration far quicker than the beam type, where there is little to malfunction. Beam type torque wrenches are impossible to use in situations where the scale cannot be read—and these situations are common in automotive applications. The scale on a beam type wrench is prone to parallax error, as a result of the large distance between indicator arm and scale. There is also the issue of increased user error with the beam type—the torque has to be read off each and every use.
For the click type, when not in use, the force acting on the spring should be removed by setting the scale to 20% of full scale in order to maintain the spring's strength. Never set a micrometer style torque wrench to zero as the internal mechanism requires a small amount of tension in order to prevent tool failure due to unwarranted tip block rotation. If a micrometer tool has been stored with the setting above 20% the tool should be set to 50% of full scale and exercised at least 5 times before being used. In the case of the beam type, there is no strain on the component that provides the reference force except when it is in use.
03-22-2008, 10:56 AM
I have a Craftsman 1/2" drive clicker. It works ok in most positions, but sometimes it does fail. I tried to get them to replace it and they told me it was over a year old, therefore, it was out of warranty.
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