ASE G1 Maintenance & Lt. Repair Practice Test

6. A technician measures several spots around a brake rotor with an outside micrometer. Technician A says the technician is checking the rotor for thickness variation. Technician B says the technician is checking the rotor for lateral runout. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

6.

Answer A is correct. Measure the brake rotor in several different spots for rotor thickness variation. Most minimum specifications are stamped inside the rotor.

Answer B is wrong. Use a dial indicator and rotate the rotor to check for lateral runout.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.

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7. The brake fluid in an ABS brake system has become aerated, resulting in a spongy brake pedal. Which of the following has caused this condition?

  • A. Dot 2 brake fluid.
  • B. Dot 3 brake fluid.
  • C. Dot 4 brake fluid.
  • D. Dot 5 brake fluid.

7.

Answer A is wrong. DOT 5 brake fluid contains silicone.

Answer B is wrong. DOT 3 and DOT 4 brake fluids are glycol-based and used in ABS systems. Silicone-based fluids like DOT 5 can become aerated in an ABS system.

Answer C is wrong. DOT 4 brake fluid is glycol-based.

Answer D is correct. Silicone-based fluids like DOT 5 can become aerated in an ABS brake system.

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8. Technician A says a sticking or stuck closed thermostat could result in engine overheating. Technician B says a stuck open thermostat will affect the engine's performance. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

8.

Answer A is wrong. Until the engine begins to warm, the thermostat stays closed, preventing coolant from flowing to the radiator and helping the engine reach operating temperature quickly.

Answer B is wrong. A stuck closed thermostat restricts coolant flow to the engine's air-cooled radiator.

Answer C is correct. A stuck open thermostat keeps the engine from reaching operating temperature, affecting engine performance. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

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9. A halogen bulb is being replaced in a headlight system. Technician A says to handle the bulb at its base during installation. Technician B says to wear gloves or use a piece of paper when handling the glass portion of these bulbs. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

9.

Answer A is wrong. Holding the bulb at its metal base prevents oil or contaminants from transferring to the delicate bulb.

Answer B is wrong. Touching the glass portion of these bulbs leaves damaging oil. Even after washing your hands, it's recommended to use a glove or a clean paper towel.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

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10. All of the following are true about testing engine coolant EXCEPT:

  • A. An antifreeze hydrometer indicates the coolant's boiling point.
  • B. An antifreeze refractometer displays the percentage of coolant to water.
  • C. An antifreeze test strip indicates the coolant's PH balance.
  • D. The engine must be brought to operating temperature before testing the coolant's boiling point.

10.

Answer A is wrong. Antifreeze hydrometers show an engine's coolant's freezing and boiling points.

Answer B is wrong. Antifreeze refractometers display the percentage of coolant to water.

Answer C is wrong. Antifreeze test strips indicate the coolant's PH balance.

Answer D is correct. Answer D is correct. Practice safety. Don’t open the cooling system when it’s hot. Squeeze the upper radiator hose to check for heat and pressure first. Carefully release the radiator cap to the first notch to release residual pressure.

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