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Torque Wrench

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Uploaded on Jan 13, 2012

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A quick video that explains what torque is and why its important to use a torque wrench when working on your vehicle. Demonstrated in this video is the clicker style which are very accurate and reliable. When replacing parts that seal with a gasket it is a must that the bolts be tightened to the correct torque specified by the manufacturer. A good example of this are your cars head bolts. They must be tightened in a special pattern 3 seperate times, increasing the amount of torque as you go. So with the 2.2L sohc honda motor you would follow the tightening sequence (found in the service manual) and tighten the bolts to 22ft lbs. Then follow the sequence and tighten them all to 51 ft lbs, finally follow the sequence again and bring them to their final torque which is 78ft lbs. You cannot just initally tighten head bolts to their maximum specified torque. The gasket between the block and the head will eventually start leaking. Some people don't always use torque wrenchs when tightening single bolts. They claim they can tighten it by "feel". More often than not these are the people that snap bolts and wind up needing to use a Tap & Die set to fix a big mess (see my other videos). Following the manufactures specified torque will save you a lot of headaches. Be sure never to use your torque wrench to loosen bolts, you only want to use it to apply torque. These wrenches need to be be recalibrated every 6-8 months or depending on use. Do not attempt to recalibrate yourself !

Also there are times when torque is measured in degrees. Occasionally you will see specs that call for 28ft lbs and an additional 90 degrees. For situations like this a special attachment must be used called a torque degree gauge. This can be used on a regular socket wrench, it does not have to be attached to a torque wrench. Torque wrenchs will only measure ft lbs and in lbs.

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