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The difference between manual and automatic slack adjusters is the way in which the brakes are adjusted. Automatic slack adjusters have sensors that do not let the brakes get too loose or too tight. Manual slack adjusters have to be adjusted by hand and can be set too tight in some cases.

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9y ago
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16y ago

manual slack adjusters need to be adjusted using a wrench .u do this by actually getting under neath truck and adjusting automatic slack adjusters ,ad just themselves thru normal use of brakes.thses are good for keeping brakes adjusted but a real pain if they over adjust,or need to be replaced they are difficult ,if not sometimes impoosable to back off to remove

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Q: What is the difference between manual and automatic slack adjusters?
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