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Correct operation steps of hydraulic wrench

source:Industry News release time:2022-07-25 Article author:yu Popular:Air band saw

  Correct operation steps of hydraulic wrench(pic1)

  1. Wire-controlled switch button function: press the RUN button, the cylinder advances; release the button, the cylinder automatically resets. Press the STOP button to stop the oil pump;

  2. Before starting the hydraulic pump, first open the unscrewing and pressure regulating valve, then turn on the power supply to check whether the hydraulic pump is running normally; then press the wire control button several times, run for a few minutes, and adjust the pressure to the required preset pressure value. The rated pressure is 70Mpa;

  3. When adjusting the pressure, press and hold the remote control button. When you hear the wrench snap; the quick release lever jumps down, the wrench stops turning in place, the pressure gauge rises rapidly from 0, and the other hand slowly adjusts the pressure regulating valve upwards. And can be locked with lock nut;

  4. Dry running, put the hydraulic wrench on the ground, press the RUN button, the wrench starts to rotate, when the wrench is heard, the wrench stops turning in place; at this time, release the button, the wrench automatically resets, when the wrench is heard again With a click, the reset is complete. Repeat several working cycles, and if the wrench rotates without abnormality, put the wrench on the nut for work;

  5. Loosen the nut: adjust the pressure of the hydraulic pump to a maximum of 70Mpa, confirm that the wrench is turned in the direction of loosening, find the reaction fulcrum, hold it steady, and repeat the advance and retreat work cycle of the oil cylinder. If it cannot be removed, take rust removal measures. If the nut cannot be removed, use a larger hydraulic wrench;

  6. Tighten the nut: check the torque correspondence table to determine the pressure setting of the hydraulic pump, confirm that the wrench is turned in the locking direction, find the reaction fulcrum, hold it steady, and repeat the working cycle of the cylinder forward and backward until the nut does not move;

  7. When the hydraulic torque wrench is stopped, the power supply should be turned off in time;

  8. After the work is completed, cut off the power supply, press the pressure relief valve to remove the residual pressure of the system, fully open the pressure regulating valve, and then disassemble the oil pipe;

  9. The oil pipe must be removed when the wrench is transported.


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