Home > Common Errors

  • 1292   Another name for controlled braking is:... Answer
  • 1164   To determine if slack adjusters need adjustment:... Answer
  • 879   The two other names for the brake pedal are:... Answer
  • 870   When you apply pressure to the brake pedal, you are:... Answer
  • 834   The air compressor is connected to the engine through:... Answer
  • 816   After applying brakes fully, what is the maximum air loss in one minut... Answer
  • 747   On a single-trailer vehicle with brakes released, what is the maximum ... Answer
  • 714   To check the slack adjusters on S Cam brakes, you should:... Answer
  • 688   A straight truck or bus air brake system should not leak at a rate of ... Answer
  • 657   When the safety valve releases air, it means that:... Answer
  • 626   A fully charged air system typically has ____ psi.... Answer
  • 621   With dual air systems, the air pressure should build:... Answer
  • 607   The effectiveness of the spring brakes depends on the adjustment of:... Answer
  • 556   Stab braking happens when you:... Answer
  • 545   How much air should the storage tanks hold?... Answer
  • 534   Foundation brakes:... Answer
  • 531   Why does air braking take more time than hydraulic braking?... Answer
  • 527   When should the air governor cut out the air compressor?... Answer
  • 527   Some buses have a separate air tank to release spring brakes:... Answer
  • 527   To test the air leakage rate, you should:... Answer
  • 526   This is used to turn on the stop lights in an air brakes system:... Answer
  • 525   Combination vehicle: brakes released. The maximum air release... Answer
  • 478   To check the air compressor governor "cut in" and "cut out" pressures:... Answer
  • 443   Stab braking is:... Answer
  • 438   After applying brakes fully max on combination vehicles, what is the a... Answer
  • 433   The safety valve in the air compressor tank is set to open at:... Answer
  • 418   The brake drums or discs:... Answer
  • 411   To test the low pressure warning signal, you should do all BUT the fol... Answer
  • 387   Dual air brake system:... Answer
  • 386   When making a normal stop, when should you push in the clutch?... Answer
  • 379   The Governor allows the air to start pumping again when it reaches the... Answer
  • 361   What happens to the air when you push the brake pedal on S-Cam brakes?... Answer
  • 350   Which is true if your air compressor stops working?... Answer
  • 324   A combination vehicle air brake system should not lose air faster than... Answer
  • 315   Air brakes take longer to stop than hydraulic brakes because:... Answer
  • 312   The type of brake most common in commercial vehicles is:... Answer
  • 304   The purpose of the safety release valve in the first tank is:... Answer
  • 302   Two types of air tank drains are:... Answer
  • 299   Which is true regarding the braking power of spring brakes?... Answer
  • 299   What happens to the S-Cam force brake shoes when the brakes are applie... Answer
  • 297   Compressed air:... Answer
  • 274   An air tank is equipped with a drain valve to remove:... Answer
  • 270   The air compressor governor control:... Answer
  • 268   What are parking brakes and emergency brakes are usually held back by ... Answer
  • 266   Brake drums:... Answer
  • 257   To test your service brakes, you should:... Answer
  • 254   The brake system that applies and releases the brakes when the driver ... Answer
  • 250   The Governor stops pumping air when it reaches the "cut out" level, or... Answer
  • 244   When a brake lining is pushed against the inside of the drum:... Answer
  • 232   If the brake pedal is pressed and released too often:... Answer
  • 216   All vehicles with air brakes are required to have a low pressure warni... Answer
  • 211   The three types of low air pressure warning devices are:... Answer
  • 198   This kind of warning signal is required on vehicles with air brakes:... Answer
  • 186   Brake shoes and linings are located:... Answer
  • 178   An emergency brake:... Answer
  • 177   A duel air brake system:... Answer
  • 169   the brake pedal in an air brake system?... Answer
  • 164   The Air Compressor Governor controls which of the following?... Answer
  • 161   This is used to make this kind of brakes function:... Answer
  • 158   The Air Compressor Governor controls:... Answer
  • 158   When making a very quick stop, you should brake so that:... Answer
  • 157   In a single vehicle with a fully charged air system, air pressure loss... Answer
  • 156   All vehicles with air bakes are required to have a low pressure warnin... Answer
  • 144   Before checking free play in manual slack adjusters, you should:... Answer
  • 144   You will find the drain valve for each air tank:... Answer
  • 144   Some air brake systems have an alcohol evaporator which helps:... Answer
  • 138   The proper way to go down long grades is to:... Answer
  • 137   The proper way to go down long grades is to:... Answer
  • 135   The purpose of an alcohol evaporator is:... Answer
  • 130   What keeps air in the tanks if the air compressor begins to leak?... Answer
  • 123   An air pressure gauge:... Answer
  • 120   When the low pressure warning is activated, you should:... Answer
  • 113   In air brake vehicles, the parking brakes should be used:... Answer
  • 111   Air braking takes more time than hydraulic braking because air brakes:... Answer
  • 108   An application pressure gauge:... Answer
  • 85   This gauge is required for vehicles with air brakes:... Answer
  • 82   The three braking systems are:... Answer
  • 76   Oil and water usually collect in compressed air tanks. If you do not h... Answer
  • 68   Compressed air is stored:... Answer
  • 58   What is the result of oil and water collecting in air tanks?... Answer
  • 50   You should use the parking brake:... Answer
  • 47   With no automatic tank drains - When should you drain the air tanks?... Answer
  • 44   What can happen to the brakes if oil and water collect in the air tank... Answer
  • 35   The air tank should be drained:... Answer
  • 33   When checking an air compressor belt, you should look for:... Answer