Barrier Gate User Manual
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3. Hold the upper screw weld nuts with an adjustable wrench, and then unscrew the two bottom
lock nuts with another adjustable wrench.
Figure 4-10 Unscrew Lock Nut
4. Adjust the boom pole of the barrier gate to the falling status to keep the three points shown in
the figure below in a straight line, and then the spring and spring shaft are lifted.
Figure 4-11 Close Boom Pole
5. Hold the spring hook to pull up the spring, and then change a new spring.
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