| 摘要 |
PROBLEM TO BE SOLVED: To introduce a hydraulic fluid into a hydraulic pressure chamber of a caliper body, simply discharge air mixed in the hydraulic fluid in a short time, and form a liquid path connecting the hydraulic pressure chamber with a small number of parts and with small machining manhour and assembling manhour. SOLUTION: A first liquid passing hole 12c communicated with a hydraulic pressure chamber 10 of a first working part 3a and a second liquid passing hole 12d communicated with a hydraulic pressure chamber 11 of a second working part 3b are respectively bored in the disc rolling out side of a caliper body 3. The first liquid passing hole 12c and the second liquid passing hole 12d are made intersect each other to from the liquid path 12, and outer surface openings of the first and second liquid passing holes 12c, 12d are blocked up. A union hole 14 communicated with the hydraulic pressure chamber 10 of the first working part 3a is formed in the disc rolling-in side of the caliper body 3, and bleeder hole 15 communicated with the hydraulic pressure chamber 11 of the second working part 3b is formed therein.
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