Frequently Asked Questions



Trailer Regulations
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
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
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
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
  • Air in hydraulic system
  • Leak in hydraulic system
  • Tapered pad wear
  • Electric current passing through brake fluid
  • Lack of fluid in reservoir
Brakes grab
  • Contaminated pad linings
  • Brakes wet
Brakes not releasing / Brake drag
  • Contaminated pad linings
  • Brakes wet
Brakes squeal
  • Worn pads
  • Brakes wet
  • Glazed or contaminated pads
  • Dirty or scored rotor
  • Bent caliper bracket
  • Taper wear on pads
Rapid pad wear
  • Brakes not releasing
  • Bad surface finish on rotor
  • Pads too soft
  • Pad fade (inadequate cooling)
  • Cracked/damaged/contaminated rotor