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How to adjust the air pressure of the water tank of CIMC Tonghua mixer truck

1. Open the water tank of the CIMC Tonghua mixer truck.

2. After starting the observation barometer, record the number of meters when it automatically shuts down, and adjust the air pressure according to the required air pressure. Air pressure is the atmospheric pressure acting on a unit area, that is, it is numerically equal to the gravity on a vertical air column extending upward to the upper boundary of the atmosphere per unit area.