Trailer Regulations |
http://www.aaa.com/aaa/traveler/trailer.html |
Excessive Surge Actuator movement or slow response (delay) from Electric/Hydraulic Actuator |
- Air in hydraulic system
- Hose swelling / Deteriorated flex hoses
- Fluid boil
- Badly worn pads
- Uneven pad wear
- Old or contaminated brake fluid
- Faulty master cylinder
- Master Cylinder mounting loose
- Clogged reservoir cap vent hole
- Soft or swollen caliper seals
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Front or Rear Axle brakes locking prematurely |
- Too much front or rear brake bias
- Failure in opposite system
- Excessive wear in opposite system
- Worn tires
- Tire pressure too high
- Defective master cylinder
- Defective caliper
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One brake locking / trailer pulls to one side |
- Caliper piston seizing
- Defective, damaged, or oil-contaminated brake pad on one side
- Defective caliper
- Scored or out-of-round rotor
- Bad caliper O-ring
- Loose caliper mount
- Mismatched rotors and pads
- Incorrect tire pressures
- Bad axle-end alignment
- Mismatched tires / load
- Damaged or crimped brake line/hose
- Loose suspension parts
- Loose caliper mounting bolts
- Incorrect wheel bearing adjustment
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Vibrating Trailer while stopping |
- Excessive rotor run out or thickness variation
- Wheel bearing damaged, worn, or out of adjustment
- Cracked rotor
- Bent axle
- Caliper not sliding properly
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No BRAKES! |
- Air in hydraulic system
- Leak in hydraulic system
- Tapered pad wear
- Electric current passing through brake fluid
- Lack of fluid in reservoir
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Brakes grab |
- Contaminated pad linings
- Brakes wet
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Brakes not releasing / Brake drag |
- Contaminated pad linings
- Brakes wet
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Brakes squeal |
- Worn pads
- Brakes wet
- Glazed or contaminated pads
- Dirty or scored rotor
- Bent caliper bracket
- Taper wear on pads
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Rapid pad wear |
- Brakes not releasing
- Bad surface finish on rotor
- Pads too soft
- Pad fade (inadequate cooling)
- Cracked/damaged/contaminated rotor
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