Midland SIDE DUMP GRAVEL TRAILER Operator's Manual page 78

5.2.9 SLACK ADJUSTERS (cont'd)
5.2.9.2 AUTOMATIC SLACK ADJUSTER MAINTENANCE (cont'd)
Free Stroke
Measuring the Free Stroke
Free stroke is the amount of movement of the adjuster arm required to move the brake shoes against the drum.
With brakes released, measure from the face of the chamber to the center of the clevis pin "A" (fig. 13). Use a
lever to move the brake adjuster until the brake shoes contact the drum "B" (fig. 13). The difference between the
fully retracted and drum contact measurement "B"–"A" (fig. 13), is the free stroke. The free stroke range should
fall between 3/8"–3/4".
Free Stroke Within Range
If the free stroke is good, but the applied stroke is too long, there is probably a problem with the foundation
brake. Check the following and reference CVSA out-of-service criteria:
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