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brake shoe and rotate together. Then the pulling rod turn right with point A as pivot and
thus B point is raised up. See figure 2-6. When brake is released, the pulling rod turn left
under the spring action and thus B point lowers. When the clearance between friction disc
and brake drum increases, b rotating vertical dimension increases. The clearance
decreases with the elongating of adjusting rod when the adjuster is stirred one gear. See
figure 2-7. See the follow table for clearance adjusting range:
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