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Medium-Heavy Truck Certifications Flashcards

7 cards from real ASE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Medium-Heavy Truck Certifications flashcards as text

  1. Which ASE truck test (T3) covers the Drive Train?

    Answer: Drive Train

    Test T3 covers drive train components including clutch, transmission, driveline, and axles.

  2. What is the most common cause of clutch chatter on a heavy truck?

    Answer: Oil-contaminated clutch facing

    Oil or grease contamination on the clutch disc causes grabbing and chatter during engagement.

  3. On a tandem drive axle, what does the inter-axle differential do?

    Answer: Allow speed differences between the two drive axles

    The inter-axle differential allows the front and rear drive axles to rotate at slightly different speeds.

  4. A driveline vibration that increases with speed most likely indicates what?

    Answer: U-joint wear or imbalance

    Worn universal joints or an unbalanced driveshaft produce vibration that worsens at higher speeds.

  5. Which ASE test (T7) covers Heating, Ventilation, and Air Conditioning?

    Answer: T7

    Test T7 covers HVAC systems on medium/heavy trucks.

  6. Before opening an A/C system for service, what must a technician do?

    Answer: Recover the refrigerant

    EPA rules require recovering refrigerant with approved equipment before opening the system.

  7. What component prevents liquid refrigerant from entering the A/C compressor?

    Answer: Accumulator or receiver-drier

    The accumulator (or receiver-drier) separates and stores liquid so only vapor reaches the compressor.