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You don't. If you want to do it right you need a torque wrench. It is more important than people think to torque fasteners properly.
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It is - you can do a lot of damage with incorrect or uneven tightening. If a proper torque-wrench is unavailable it is sometimes possible to use a strong spring-balance on the handle of a standard socket-set, and use the standard formula relating tension, length and torque, but that is potentially inaccurate it's far, far better to use the correct tool!
ALL of the above comments are absolutely correct- I would add only that just offhand I can think of 2 common applications on cars where use of a torque wrench is essential -Cylinder head bolts and trans pan bolts.
There are two basic kinds of torque wrenches - the "needle" kind and the "clicker" kind. The "needle" kind, which are wildly inaccurate and therefore pretty much worthless, have a needle which moves across a scale which supposedly shows the torque being applied. The "clicker" kind allow for the desired torque to be "dialed in" - usually by means of turning the base of the handle which moves to the desired torque setting on a scale in the handle; once set, the wrench will emit an audible "click" when a fastener (usually a nut) is tightened to the torque level at which it's set. When torquing wheel lug nuts, you should always work "crosswise" or in a star pattern rather than simply working your way around the lug nuts in a circle; this will ensure a closer torque setting. Once all lug nuts have been torqued this way, you should then work circularly around the nuts to double-check the torque setting. Wheel nut torque settings should be re-checked after each on-track session.
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Can you use a torque wrench in both directions?
Yes, you can use a torque wrench in both directions.
How do you use a torque wrench when the manual says to use a foot pound torque?
Use a torque wrench that is graduated in ft. lbs or do the math.
What does a mechanic use to tighten a car wheel?
A torque wrench, usually a power torque wrench
If you add an exton to your torque wrench does it change the torque?
as long as your extension is 90 degrees from the handle it will not affect your torque wrench. if you use a super long torque wrench you may lose a little torque in the extension it self but should not affect torque. an extension affecting the wrench in lenght like a crows foot will affect torque as long as your extension is 90 degrees from the handle it will not affect your torque wrench. if you use a super long torque wrench you may lose a little torque in the extension it self but should not affect torque. an extension affecting the wrench in lenght like a crows foot will affect torque
Do you need to use a torque wrench to loosen retractor seatbelt bolt on vw caravelle?
You don't use a torque wrench to loosen ANYTHING. -It is only for tightening nuts and bolts to the correct torque.
Can you use an automotive torque wrench for gun work?
No
Why shouldn't an impact wrench be used in place of a torque wrench?
An Impact wrench is for a totally different use. A torque wrench will let the user know when a certain torque has been achieved in tightening. The impact wrench is for removing very tough nuts under impact of a hammer.
How do you use an angular gauge on a torque wrench?
After torqueing I would use a regular ratchet with the angle gauge so you don't damage or through off the torque wrench calibration.
What does a mechanic use to tighten nuts?
spanner or a torque wrench
Does loosening a bolt with a torque wrench hurt the torque wrench?
yes
How do you torque a spark plug?
Use a torque wrench with the correct setting for your motor. See related link.
What is the difference between torque wrench and socket wrench?
The socket wrench is one among the system of wrenches that departs the wrench handle from the wrench that engages the fastener. Whereas, the torque wrench are the torque indicating socket wrench handle. When it is used properly, that could help you calculate the torque amount while fastening using the wrench. It also limits the amount of torque which is applied on material.
