The use of torque wrench and selection method (1) The selected size of the torque wrench must be consistent with the size of the bolt or nut, the wrench opening is too large and easy to slip off and damage the screw hexagon, in the import of vehicle maintenance, should pay attention The choice of metric metric wrenches; selection principle of various types of wrenches, generally preferred socket wrenches, followed by plum wrenches, again open-end wrenches, and finally selected movable wrenches.
(2) In order to prevent damage and slippage of the wrench, the pulling force should be applied to the thicker side of the opening. This should be taken care of especially for the movable wrench with large force to prevent the opening from appearing in an “8†shape and damaging the nut and wrench.
(3) The torque wrench is designed according to the strength of human hand. When a tight screw is encountered, it cannot be hit with a hammer. Except for socket wrenches, other wrenches cannot be set with a booster rod to prevent damage to the wrench or When using a torque wrench with a threaded connection (4), when you hear a "click", this is the most appropriate note:
1. Purpose: Torque wrench is a tool for rotating bolts or nuts.
2. Usage: When the torque wrench is turned, pull force should be used. Pushing the wrench can be dangerous.
3. The torque wrench can be used to loosen the bolts. Before bolts are tightened, the bolts should be cleaned and lubricated.
4. Use a torque wrench to tighten the bolt evenly. Do not use impact force.
Preset torque wrench features and usage First, characteristics 1, with a preset torque value and sound device. When the tightening torque of the fastener reaches a predetermined value, a click of the signal “click†can be automatically generated, accompanied by a noticeable vibration of the hand and prompt completion of work. After releasing the force, the relevant parts of the wrench can be automatically reset.
2, can switch two directions. Rotate the ratchet steering switch and the wrench reversibly applies force.
3, male and female (Nm, lbf.ft) dual scale; handle differential scale line. Readings are clear and accurate.
4, alloy steel forging, durable, long life. Calibration is traced back to the National Institute of Technology Standards (NBS).
5, accuracy in line with ISO6789: 1992. ASMEB107.14, GGG-W-686.±4%.
Second, the use of methods 1, according to the workpiece torque requirements, determine the preset torque value.
2. When presetting the torque value, pull down the locking ring on the handle of the spanner and turn the handle at the same time to adjust the main scale line and differential scale line value of the scale to the required torque value. After adjustment, loose kasuo ring, handle automatically locked.
3. Install the corresponding size sleeve on the spanner wrench and cover the fasteners, then slowly apply force on the handle. When applying external force, it must be in the direction of the indicated arrow. When it is tightened to the click of a signal (the preset torque value has been reached), the boost is stopped. One job is completed.
4. When a large-size torque wrench is used, it can be attached to a long sleeve for easy operation.
5. If you do not use it for a long time, adjust the ruler line back to the minimum torque value.
(2) In order to prevent damage and slippage of the wrench, the pulling force should be applied to the thicker side of the opening. This should be taken care of especially for the movable wrench with large force to prevent the opening from appearing in an “8†shape and damaging the nut and wrench.
(3) The torque wrench is designed according to the strength of human hand. When a tight screw is encountered, it cannot be hit with a hammer. Except for socket wrenches, other wrenches cannot be set with a booster rod to prevent damage to the wrench or When using a torque wrench with a threaded connection (4), when you hear a "click", this is the most appropriate note:
1. Purpose: Torque wrench is a tool for rotating bolts or nuts.
2. Usage: When the torque wrench is turned, pull force should be used. Pushing the wrench can be dangerous.
3. The torque wrench can be used to loosen the bolts. Before bolts are tightened, the bolts should be cleaned and lubricated.
4. Use a torque wrench to tighten the bolt evenly. Do not use impact force.
Preset torque wrench features and usage First, characteristics 1, with a preset torque value and sound device. When the tightening torque of the fastener reaches a predetermined value, a click of the signal “click†can be automatically generated, accompanied by a noticeable vibration of the hand and prompt completion of work. After releasing the force, the relevant parts of the wrench can be automatically reset.
2, can switch two directions. Rotate the ratchet steering switch and the wrench reversibly applies force.
3, male and female (Nm, lbf.ft) dual scale; handle differential scale line. Readings are clear and accurate.
4, alloy steel forging, durable, long life. Calibration is traced back to the National Institute of Technology Standards (NBS).
5, accuracy in line with ISO6789: 1992. ASMEB107.14, GGG-W-686.±4%.
Second, the use of methods 1, according to the workpiece torque requirements, determine the preset torque value.
2. When presetting the torque value, pull down the locking ring on the handle of the spanner and turn the handle at the same time to adjust the main scale line and differential scale line value of the scale to the required torque value. After adjustment, loose kasuo ring, handle automatically locked.
3. Install the corresponding size sleeve on the spanner wrench and cover the fasteners, then slowly apply force on the handle. When applying external force, it must be in the direction of the indicated arrow. When it is tightened to the click of a signal (the preset torque value has been reached), the boost is stopped. One job is completed.
4. When a large-size torque wrench is used, it can be attached to a long sleeve for easy operation.
5. If you do not use it for a long time, adjust the ruler line back to the minimum torque value.
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