Have you ever wondered why the 10mm wrench is shorter than a 14mm wrench? Why does the ¼” drive ratchet typically only have sockets up to about 15mm? There is a good reason for both. If you use a 10mm wrench to tighten down a 10mm fastener, and aren’t over “torquing”, you are going to get the proper torque. If you used a wrench that is twice as long to do the same thing your chances of over torquing, breaking or compromising the fastener are vastly increased. Using a ¼” drive ratchet to tighten a 10mm fastener is much safer than using a ½” drive ratchet to tighten the same 10mm fastener. This is a simple matter of understanding the forces of leverage and torque, the longer the tool the more leverage you get and the easier the torque is applied.
There is another car repair tool that will get you the proper torque every time; provided the tool works properly. It’s the torque wrench. What does a mechanic have that you don’t? Well, for the most part, experience. Gaining a feel for how tight a bolt needs to be is the first step to getting the proper torque. This is simple to practice, and it is easily gauged with a torque wrench. There are certain instances that using a torque wrench is incredibly important. Rotating parts is one of them. You don’t want a spinning part to loosen the nuts or bolts that hold it in place. So torque your axle nuts and flywheel bolts.
Make sure you replace a the bolt or nut if it is recommended by a Car repair manual. This is because that bolt or nut has to be, and has been, torqued to yield. This means that the fastener is actually getting stretched to it’s proper torque. It also means that when that particular bolt/nut is removed you will not be able to reassemble using that previously torqued bolt and achieve the same required torque that assures both fit and function. Now when we are talking torque, let’s consider some other factors. When the car repair manual says to oil the bolt before torquing they are further modifying the manner in which that bolt gets torqued. The friction is reduced from the addition of the oil and this means that more force is now being applied to the bolt for that set torque value. Now let’s think about a dry bolt at the same torque – it is not going to get turned enough to do what the manufacturer intended to do at that torque.
Hydraulic wrenches range from the most common household types to specialty types.Check out the website that specializes in wrenches at https://www.atwwren.com for details.
Or contact us
Company Name: Hang Zhou WREN Hydraulic Equipment Manufacturing Co., Ltd.
Address: No. 24, Xingxing Road, Linping, Hang Zhou, China
Tel: +86 571 8811 5720