ASE A5 Brakes Study Guide (Drum Brakes Diagnosis
and Repair) Smart Study Guide: Focused Notes &
Verified Answers!!
The positions the primary and secondary shoes on an adjuster assembly correct answers Front
= Primary
Rear = Secondary (pg37)
Duo Servo Drum Brakes correct answers Has a wheel cylinder on top of the backing plate
Braking force is transferred from shoe to the other
as the wheel rotates in ether direction
Brakes will self adjust when vehicle travels in reverse
(pg37,38)
which of the brake shoes are thicker and longer correct answers secondary (pg38)
Leading-Trailing Drum Brakes correct answers Has both shoes held in place against a solidly
attached anchor mounted to the bottom of the backing plate
Adjusts when a certain distance between the lining and the drum is reached
when the brakes are applied in normal vehicle motion
the forward or leading shoe is energized, while the shoe is not
(pg39,40)
The variation in self adjustment in leading trailing drum brakes correct answers adjust
whenever the brakes are applied or when the parking brake is applied (pg40)
What could be the cause of a squeaking noise when the brakes are applied correct answers
excessive wear to or lack of lubrication on the brake backing plate shoe support pads (pg41)
What could be the cause of a squealing sound correct answers glazed brake linings or foreign
material embedded in the lining (pg41)
What could be the cause of a grinding noise correct answers metal to metal contact of the
rivets or brake shoe against the brake drum if linings are worn (pg41)
What could be the cause of a low brake pedal correct answers excessive clearance between
the brake linings and drum or a leak in the hydraulic system (pg41)
What maybe the cause of excessive clearance between the linings and drums correct answers
malfunctioning automatic adjuster mechanisms or the driver does not back up enough to
allow the adjuster mechanisms to keep pace with lining wear (pg41)
What could be the cause of a hard pedal correct answers glazed linings or grease (pg41)
What could cause brakes to grab correct answers grease or brake fluid contamination (pg41)
and Repair) Smart Study Guide: Focused Notes &
Verified Answers!!
The positions the primary and secondary shoes on an adjuster assembly correct answers Front
= Primary
Rear = Secondary (pg37)
Duo Servo Drum Brakes correct answers Has a wheel cylinder on top of the backing plate
Braking force is transferred from shoe to the other
as the wheel rotates in ether direction
Brakes will self adjust when vehicle travels in reverse
(pg37,38)
which of the brake shoes are thicker and longer correct answers secondary (pg38)
Leading-Trailing Drum Brakes correct answers Has both shoes held in place against a solidly
attached anchor mounted to the bottom of the backing plate
Adjusts when a certain distance between the lining and the drum is reached
when the brakes are applied in normal vehicle motion
the forward or leading shoe is energized, while the shoe is not
(pg39,40)
The variation in self adjustment in leading trailing drum brakes correct answers adjust
whenever the brakes are applied or when the parking brake is applied (pg40)
What could be the cause of a squeaking noise when the brakes are applied correct answers
excessive wear to or lack of lubrication on the brake backing plate shoe support pads (pg41)
What could be the cause of a squealing sound correct answers glazed brake linings or foreign
material embedded in the lining (pg41)
What could be the cause of a grinding noise correct answers metal to metal contact of the
rivets or brake shoe against the brake drum if linings are worn (pg41)
What could be the cause of a low brake pedal correct answers excessive clearance between
the brake linings and drum or a leak in the hydraulic system (pg41)
What maybe the cause of excessive clearance between the linings and drums correct answers
malfunctioning automatic adjuster mechanisms or the driver does not back up enough to
allow the adjuster mechanisms to keep pace with lining wear (pg41)
What could be the cause of a hard pedal correct answers glazed linings or grease (pg41)
What could cause brakes to grab correct answers grease or brake fluid contamination (pg41)
