This key, which is often used in refrigeration workshops, is used to give the manufacturer's recommended torque on the bolts, avoiding overvoltages and deformation of the parts.
The use of this key has become widespread in repair shop work, especially in those parts that require tightening and assembly safety, such as: flywheel or pulley bolts, crankshaft bearings, crank bearing housings, others. The torque wrench can be used for right or left threads, but in no case should it be used to loosen, because if the bolt or nut is stuck, the torque applied may pass its limit and cause damage to the wrench, changing its accuracy . For greater accuracy in measurement, it is convenient to lubricate the thread before tightening the nut or bolt. When the indicator indicates the recommended force, the action on the key must be stopped.
The torque wrench should only be used to give the final touch. A common wrench must be used to abut the bolt or nut.
