| 摘要 |
PURPOSE: A tandem brake booster is provided to prevent abrasion due to concentrated operation since through holes formed on front and rear power pistons are formed in a row. CONSTITUTION: A tandem brake booster comprises a tie rod, a center plate, and a valve body. The valve body(30) is inserted into the central parts(25b,29b) of front and rear power pistons(25,29). Protrusions(25c,29c) are respectively formed on the central parts of the front and rear power pistons.
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