| 摘要 |
A brake retractor assembly in which the automatic adjustment apparatus includes a slitted drag tube and a ball carried by an adjusting pin engageable with the tube. The ball is slightly larger than the inside diameter of the tube so that as the brake wears the ball is pulled through the tube causing progressive expansion of the tube and thereby providing the necessary adjustment for wear. Increased resistance to movement of the ball is created on the ends of the drag tube by a "V" notch with a disappearing taper, a flange, or a high friction inner surface of the tube.
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