SOS BRAKE & BRAKING SYSTEM
EXAMINATION SET 2026 SOLVED
QUESTIONS GRADED A+
● What should happen to the brake pedal when testing a vacuum power
brake booster? Answer: Drop slightly and remain firm
● What is the length of the primary shoe lining when installing brake
shoe linings that are not the same length? Answer: Smaller and goes
towards the front of the car
● What does a cracked or torn vacuum diaphragm in a brake power
booster cause? Answer: A hard pedal feel requiring very high pedal
effort to stop
● What is the most likely cause of finding gear lube inside both rear
brake drums on a rear wheel drive vehicle? Answer: A plugged axle
● What incorrect service procedure can cause brake lock-up? Answer:
Master cylinder push rod adjusted too long
● How should an ABS system be depressurized? Answer: Pump the
brake pedal at least 25 times with the ignition off
, ● What is the most likely cause of dragging rear brakes after new linings
are installed? Answer: Technician used the parking brake to adjust shoes
and the cable is stuck
● What should be used when turning brake drums to reduce chatter?
Answer: A dampening strap
● Which drum brake measurement is NOT necessary? Answer: Run-out
● In a 3-channel system, which wheels are on the same circuit? Answer:
Both rear wheels
● What should be used to test an ABS wheel speed signal? Answer: AC
volts on a digital multimeter
● What is the key input for the ABS control module? Answer: Wheel
speed sensors
● What should be done when dampness is evident on flexible brake
hoses? Answer: Replace them
● What tool should be used to check for rotor thickness variation?
Answer: Micrometer
EXAMINATION SET 2026 SOLVED
QUESTIONS GRADED A+
● What should happen to the brake pedal when testing a vacuum power
brake booster? Answer: Drop slightly and remain firm
● What is the length of the primary shoe lining when installing brake
shoe linings that are not the same length? Answer: Smaller and goes
towards the front of the car
● What does a cracked or torn vacuum diaphragm in a brake power
booster cause? Answer: A hard pedal feel requiring very high pedal
effort to stop
● What is the most likely cause of finding gear lube inside both rear
brake drums on a rear wheel drive vehicle? Answer: A plugged axle
● What incorrect service procedure can cause brake lock-up? Answer:
Master cylinder push rod adjusted too long
● How should an ABS system be depressurized? Answer: Pump the
brake pedal at least 25 times with the ignition off
, ● What is the most likely cause of dragging rear brakes after new linings
are installed? Answer: Technician used the parking brake to adjust shoes
and the cable is stuck
● What should be used when turning brake drums to reduce chatter?
Answer: A dampening strap
● Which drum brake measurement is NOT necessary? Answer: Run-out
● In a 3-channel system, which wheels are on the same circuit? Answer:
Both rear wheels
● What should be used to test an ABS wheel speed signal? Answer: AC
volts on a digital multimeter
● What is the key input for the ABS control module? Answer: Wheel
speed sensors
● What should be done when dampness is evident on flexible brake
hoses? Answer: Replace them
● What tool should be used to check for rotor thickness variation?
Answer: Micrometer
