| 摘要 |
Disclosed herein is an improved servo brake drum adjustment mechanism which automatically adjusts the brake shoes for wear of the friction pads and drum surface. The mechanism comprises a screw thread adjustment link activated by movement of a pawl finger upon a star wheel. The pawl finger is activated by a wire like push rod. Upon a predetermined circumferential movement of the primary brake shoe the push rod effects rotation of the star wheel and adjustment of the brake shoe assemblies.
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