ASE Medium-Heavy Truck Certifications 3 — Questions and Answers
Question 1: Which ASE truck test covers Suspension and Steering (T5)?
- Drive Train
- Suspension and Steering (Correct answer)
- Heating and AC
- Preventive Maintenance
Correct answer: Suspension and Steering
Test T5 covers suspension and steering systems on medium/heavy trucks.
Question 2: A truck pulls to one side during braking. Which is the most likely cause?
- Uneven brake adjustment (Correct answer)
- Low coolant
- Faulty radio
- Worn wiper blades
Correct answer: Uneven brake adjustment
Unequal braking force from misadjusted or contaminated brakes causes pulling to one side.
Question 3: What is the function of a slack adjuster in a drum brake air system?
- Store air
- Convert chamber push-rod motion into camshaft rotation (Correct answer)
- Cool the brakes
- Filter the air
Correct answer: Convert chamber push-rod motion into camshaft rotation
The slack adjuster acts as a lever that rotates the S-cam to apply the brake shoes.
Question 4: Excessive push-rod travel on an air brake chamber indicates what condition?
- Brakes out of adjustment (Correct answer)
- Overinflated tires
- Weak battery
- Clogged fuel filter
Correct answer: Brakes out of adjustment
Long push-rod stroke means the brakes are out of adjustment and may fail to apply fully.
Question 5: Which ASE test (T8) covers Preventive Maintenance Inspection?
- T4
- T7
- T8 (Correct answer)
- T2
Correct answer: T8
Test T8 covers preventive maintenance inspection (PMI) procedures.
Question 6: What tool measures brake drum diameter to check for wear limits?
- Torque wrench
- Inside brake drum micrometer (Correct answer)
- Feeler gauge
- Compression tester
Correct answer: Inside brake drum micrometer
A brake drum micrometer measures inside diameter to verify it is within the maximum wear limit.
Question 7: A technician notices uneven tire wear on a steer axle. What should be checked first?
- Engine timing
- Wheel alignment and inflation (Correct answer)
- Exhaust system
- Cab heater
Correct answer: Wheel alignment and inflation
Improper alignment and incorrect tire pressure are the most common causes of uneven steer-tire wear.
ASE Medium-Heavy Truck Certifications 3
Which ASE truck test covers Suspension and Steering (T5)?