There are many types and specifications of wrenches, although there are open-end wrench, Plum wrenches, adjustable wrenches, socket wrenches, torque wrenches, etc. However, the usage method and precautions are similar.
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1. No matter what kind of wrench, the best use effect is to pull. If you must push it, you can only push it with your palm, and your fingers should be stretched out to prevent the bolt or nut from suddenly loosening and hurting your fingers. To get the maximum torque. The direction of tension must be at right angles to the wrench handle.
2. When using shifting spanner, the specifications should be selected according to the size of the nut. When using, hold the handle with the right hand. The closer your hand is, the easier it will be to pull it. When pulling the big nut, a large torque is required, and the hand should be held near the end of the handle. When pulling the small nut. The required torque is not large, but the nut is too small and easy to slip. Therefore, the hand should be held near the head. And the worm wheel can be adjusted at any time to tighten the adjustable lip to prevent slipping.
3. When using the adjustable wrench, the movable wrench jaw of the wrench should bear the thrust and fix wrench jaw and bear the pulling force, that is, when pulling the wrench. Move wrench jaw towards the inside: force must be uniform to avoid damage to wrenches, bolts and nuts. Accident caused by slipping.
4. Avoid excessive force when using the wrench. Otherwise. It may cause slipping and injury to the human body.
5. Wrenches shall not be used as crowbar or hand hammer.
6. When pulling the rusty nut. You can drop a few drops of kerosene or oil on the nut. After a while. Just twist it. When it cannot be twisted, do not use Steel Pipe sleeve to increase torque on the handle of shifting spanner. Because this can easily damage the movable lip or nut, the NUT cannot be taken out.
7. When you need a wrench for climbing, you should use a rope to transmit it, and you must not throw it up or down.
