Learning Organizations That Continually Plan Reflect and Make Adjustments Exemplifies
Whether you're a highly-skilled mechanic or just a repairman who fixes cars from their own garage or repair shop, you're no stranger to having to do a repair or two. These repairs can be time consuming, tedious and probably the last things you want to do. You're definitely going to find ways to reduce the workload. One of the ways you might try is repurposing a tool and using it for something other than its intended purpose. For instance, using a plain jane wrench to tighten bolts on your engine rather than a torque wrench. Repurposing such tools would end up costing you more as you may blow a gasket or something worse. That's why learning the basics of torque adjustments and automotive torque specs is vital whether you're a handyman or a professional.
Torque Wrench
This is a tool used to gauge the rotational force (torque) and prevent you from over tightening hardwares or crushing components. The wrench has certain mechanisms that provides you an auditory and tactile cue when you've attained the right torque amount. Torque is measured in Newton meters (Nm) and the value is commonly referred to as the torque spec and can be found on any torque specs chart. It indicates the torque for the bolts closest to it. You need to know the torque spec on the bolt or part you're looking to tighten before you choose which type of wrench to use. Afterwards, use the appropriate adjustable wrench to the proper torque value.
Before you learn the basics of torques adjustments, you need to know how to use different types of wrenches.
- Beam wrench
Made of two beams: The first acts as a handle for the tool and a lever to apply the torque to the fastener whereas the second acts like the indicator beam.
- Hydraulic Torque Wrench
It's used when you need exceptional accuracy while tightening large torques for aviation applications or assembling heavy machinery.
- Angle Torque Wrench
It operates like an electronic device as the tightening angle from the threshold is measured by a sensor. This helps identify joints that have already been tightened.
- Deflecting Beam
This wrench uses a deflecting beam instead of a coil spring. This method was believed to help prolong the accuracy.
Other types of torques wrenches include slipper, click, no-hub wrench and an electronic torque wrench.
Special Torque Adjustment Settings
To learn how to accurately adjust the torque you need to look up the torque specifications for the fastener you're going to be using. If you have any doubt, turn to your trusty service manual or Google the specifications. You also need to ensure that the specs and the tightening procedure is most recent version. Incorrect procedures can lead to adverse problems in the future.
Loading onto the bolt depends on the amount of friction being generated by the threads when being tightened. Using any kind of a lubricant such as oil on the threads helps reduce the friction and in turn increase the load being applied to the fastener. However, this could lead to overloading the bolt and cause bolt stretching or breakage. The only exception to this is the use of cylinder head bolts. They are oiled lightly with 10W-30 motor oil. You can confirm this by checking various torque specs for bolts chart.
It's important that you use a regular wrench when tightening a fastener to a snug fit. After which, a torque wrench is advised to tighten it to the final specifications. Most beam style torque wrenches have a plastic handle on one end and a pivot point inside that allows the handle to move or wiggle slightly. To ensures that your torque reading is accurate, keep the handle as centered on the pivot when tightening lug nuts and wheel studs.
Source: https://www.questionsanswered.net/article/learn-the-basics-of-torque-adjustments?utm_content=params%3Ao%3D740012%26ad%3DdirN%26qo%3DserpIndex&ueid=ee357a7e-8e58-49dc-8324-3c9319888a04
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