Document XOavBGYy9MDKzz36vZjZjkerd

PREREQUISITE REVIEW 16. How is the parking brake activated on rear wheel disc brakes (on vehicles without drum in rotor parking brakes)? A. By placing small balls into the indentations on the operating shaft B. By manually forcing brake fluid into the caliper bore C. By turning the thrust screw through electromotive force D. By moving small balls out of the indentations on the operating shaft. 17. Technician A says that on leading-trailing shoe brake systems the leading shoe performs almost all of the braking. Technician B says that leading-trailing type drum brakes have an anchor point at the top of the backing plate. Who is right? A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or B 18. Technician A says that on duo-servo type brakes the primary shoe contacting the drum forces the secondary shoe more tightly into the brake drum. Technician B says that duo-servo type brakes do not have an anchor point the same as leading-trailing type brakes do. Who is right? A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or B 19. Which of the following self-adjusting mechanisms utilizes a knurled pin, quadrant, and strut, and is only found on leading-trailing types of brakes? A. One-shot adjusting mechanism B. Leading-trailing incremental self-adjuster C. Duo-servo incremental self-adjuster D. Non of the above are correct. 20. Technician A says that vacuum boosters have two sealed chambers divided by a diaphragm. Technician B says that when the brakes are applied a vacuum booster has an electronically controlled vacuum port that opens to the outside atmosphere. Who is right? A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or B Brake Syslem Diagnosis and Repair September, 2005 Prereq - 5