Automotive Technician Ch 99 Exam 2023
Two Techs are discussing drum brake shoes. Tech A says that forward and rear-facing shoes are the same can be installed in either position on any drum brake system. Tech B says that the darker color linings should always be placed toward the front of the vehicle. Which Tech is correct? - Answer- Neither Technician
Two Techs are discussing brake lining edge codes. Tech A says that the code can identify the manufacturer. Tech B says that all friction material from the same manufacturer will have the same edge codes. Which Tech is correct? - Answer- Technician A
Tech A says that star wheel adjusters use different threads (left and right handed) for the left and right sides of the vehicle. Tech B says that a pawl controls the teeth of the star wheel adjuster. Which Tech is correct? - Answer- Both Technicians
Tech A says that drum brakes can fail to slow the vehicle if driven through deep water. Tech B says that when drum brakes get hot, the brake pedal will drop because the drum
expands away from the shoes. Which Tech is correct? - Answer- Both Technicians
Tech A says that the anchor pin (shoe anchor) is used to hold one end of the primary and secondary shoe return springs. Tech B says that shoe anchor prevents the brake shoes from rotating with the drum when the brakes are applied. Which Tech is correct? - Answer- Both Technicians
Drum brake shoes ________. - Answer- All of the above are possible
Which lining does most of the braking on a dual-servo brake? - Answer- Rear (Rearward Facing)
Which lining does most of the braking on a leading/trailing brake? - Answer- Leading (Forward Facing)
Two Techs are discussing drum brake self-adjusters. Tech A says that some brakes self-adjust when the brakes are released when the vehicle is driven in reverse. Tech B says that some brakes self-adjust when the brakes are applied rather than when released. Which Tech is correct? - Answer- Technician B
A typical drum brake backing-plate has how many shoe support pads (also called ledges)? - Answer- 6
A typical drum brake uses how many hold-down springs? - Answer- 2
Two Techs are discussing drum brake shoes. Tech A says that forward and rear-facing shoes are the same can be installed in either position on any drum brake system. Tech B says that the darker color linings should always be placed toward the front of the vehicle. Which Tech is correct? - Answer- Neither Technician
Two Techs are discussing brake lining edge codes. Tech A says that the code can identify the manufacturer. Tech B says that all friction material from the same manufacturer will have the same edge codes. Which Tech is correct? - Answer- Technician A
Tech A says that star wheel adjusters use different threads (left and right handed) for the left and right sides of the vehicle. Tech B says that a pawl controls the teeth of the star wheel adjuster. Which Tech is correct? - Answer- Both Technicians
Tech A says that drum brakes can fail to slow the vehicle if driven through deep water. Tech B says that when drum brakes get hot, the brake pedal will drop because the drum
expands away from the shoes. Which Tech is correct? - Answer- Both Technicians
Tech A says that the anchor pin (shoe anchor) is used to hold one end of the primary and secondary shoe return springs. Tech B says that shoe anchor prevents the brake shoes from rotating with the drum when the brakes are applied. Which Tech is correct? - Answer- Both Technicians
Drum brake shoes ________. - Answer- All of the above are possible
Which lining does most of the braking on a dual-servo brake? - Answer- Rear (Rearward Facing)
Which lining does most of the braking on a leading/trailing brake? - Answer- Leading (Forward Facing)
Two Techs are discussing drum brake self-adjusters. Tech A says that some brakes self-adjust when the brakes are released when the vehicle is driven in reverse. Tech B says that some brakes self-adjust when the brakes are applied rather than when released. Which Tech is correct? - Answer- Technician B
A typical drum brake backing-plate has how many shoe support pads (also called ledges)? - Answer- 6
A typical drum brake uses how many hold-down springs? - Answer- 2
