As described above, the brake fluid used in {HEAD ~ the cylinders} 1 and 1 for the operation of {TAIL ~ the brakes} is cooled by air while it passes through the second flow channels 3 and 3, the first and second connecting flow channels 31 and 32, the tank 8 and the first flow channels 2 and 2 so as to be prevented from being overheated by heat accompanying the operation of the brakes, so that a similar effect to the first embodiment can be obtained 
As described above , the brake fluid used in { HEAD ~ the cylinders } 1 and 1 for the operation of { TAIL ~ the brakes } is cooled by air while it passes through the second flow channels 3 and 3 , the first and second connecting flow channels 31 and 32 , the tank 8 and the first flow channels 2 and 2 so as to be prevented from being overheated by heat accompanying the operation of the brakes , so that a similar effect to the first embodiment can be obtained
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH