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<blockquote data-quote="104Feeder" data-source="post: 4165785" data-attributes="member: 42554"><p>As someone else stated it's called "caging" the brakes. The way to know is by doing the brake adjustment test. So you do your full UPS pre-trip where you have supplied air to the trailer and have the hand valve applied. You should be looking at the break shoes and drums closely, which requires you to get under the trailer. A caged brake will show a gap between the shoe and drum. There should be no gap with the brakes applied. A caged or out of adjustment brake also may show a light rust on the normally shiny brake drum because of lack of friction.</p><p>Now, after completing the rest of the UPS pre-trip, release the handbrake and walk back to the trailer axles and inspect the brake shoes again. Now you should see a slight gap between the shoe and drum, no more than the width of a dime. Any more and they are out of adjustment or caged.</p></blockquote><p></p>
[QUOTE="104Feeder, post: 4165785, member: 42554"] As someone else stated it's called "caging" the brakes. The way to know is by doing the brake adjustment test. So you do your full UPS pre-trip where you have supplied air to the trailer and have the hand valve applied. You should be looking at the break shoes and drums closely, which requires you to get under the trailer. A caged brake will show a gap between the shoe and drum. There should be no gap with the brakes applied. A caged or out of adjustment brake also may show a light rust on the normally shiny brake drum because of lack of friction. Now, after completing the rest of the UPS pre-trip, release the handbrake and walk back to the trailer axles and inspect the brake shoes again. Now you should see a slight gap between the shoe and drum, no more than the width of a dime. Any more and they are out of adjustment or caged. [/QUOTE]
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