| 摘要 |
PROBLEM TO BE SOLVED: To assure a recycling time for an air dryer by shortening a continuously operating time for an air compressor. SOLUTION: The air dryer 18 is provided in a supply pipe passage 17 connected to a discharge port 16a of the air compressor 16. Exits 11b, 12b of front and rear protection valves 11, 12 having entrances 11a, 12a connected to the other end of the supply pipe passage are connected to front and rear service brake air tanks 26, 27. An exit 13b of a parking protection valve 13 having an entrance 13a connected to the other end of the supply pipe passage is connected to a parking brake air tank 28, and an exit 14b of an accessory protecting valve 14 having an entrance 14a connected to the other end of the supply pipe passage is connected to an accessory air tank 14.
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