HEAVY/ HEAVY DUTY BRAKES Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

in the AL factor the L refers to the? : length of the slack adjuster Spring brakes on an air-brake vehicle must be able to hold the vehicle, facing uphill or downhill, on what percentage grade? : B 20% How much free movement should exist between a slack adjuster and its camshaft? : .005 in. max The warning light on a truck with a antilock brake system light when the truck is started. When the truck is moving, the light stays on. which of the following could be the cause? : Misadjusted wheel sensor THEORY OF OPERATION 2 | P a g e : BRAKES ARE DESIGN TO COVERT THE ENERGY OF MOTION INTO HEAT ENERGY DISSIPATE THAT HEAT INTO THE AIR COEFFICIENT OF FRICTION : the ratio between the force necessary to move one surface horizontally over another and the pressure between the two surfaces. THE RETARDER HORSEPOWER : GENERATED BY THE BRAKES, THEN MUST BE SEVERAL TIMES THAT OF THE ENGINE, OFTEN THE AMOUNTS TO OVER 100 RETARDING HORSEPOWER AT EACH WHEEL END. HYDRAULIC BRAKE : THE ONLY MECHANICAL LEVERAGE THAT IS USED IS IN THE FOOT PEDAL LINKAGE HEAT DISSIPATION : BRAKE DRUM/ROTOR ACTS AS A HEAT SINK AND A HEAT EXCHANGER SERVICING THE HYDRAULIC BR