How to adjust the air pressure imbalance of four air storage tanks in Dongfeng Tianlong?

It is regulated by the distribution valve on the cylinder side. There is a distribution valve on the gas storage tank side, which is adjusted by the distribution valve on the gas storage tank side. There is a screw at the top or bottom of the distribution valve, which needs to be adjusted with a screwdriver and a wrench at the same time. Adjustment is good, but it is quite dangerous not to adjust. If the air pressure is too high, it may cause the air storage tank to rupture. The method is to loosen the screw with a wrench, turn it counterclockwise for half a turn with a screwdriver, and then lock the screw. If the air pressure is too high, turn off the engine immediately and step on the brakes several times to prevent the air pressure from exceeding 8.