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Quiz Session - Attempts With Random Questions

ASE G1 Exam Questions

Page 9 of 10

161.

Which of the following components requires the use of a special puller for removal and does not require a special tool for installation?

  • A Pitman arm

  • A stabilizer bar link

  • An upper control arm

  • A power steering pump pulley

Correct answer: A Pitman arm

Pitman arms are used on older vehicles with parallelogram linkage. Pitman arms connect a recirculating ball steering gear to the steering linkage. The Pitman arm and steering gear sector shaft are attached by tapered splines and a nut. A special puller is required to remove the Pitman arm from the sector shaft. Installing the Pitman arm is done by aligning the splines and tightening the Pitman arm nut to the proper torque.

Stabilizer bar links and upper control arms do not require pullers for removal. Power steering pump pulleys usually require a puller for removal, and usually require a special tool for installation. The power steering pulley puller and installer are usually sold as a package.

162.

Which of the following is the first step in a systematic repair process on an air conditioning system?

  • Verify the customer's concern

  • Check the temperature of the air coming out of the air conditioning vents

  • Check the air conditioning system pressures

  • Check for technical service bulletins

Correct answer: Verify the customer's concern

It is important to consult with the customer or read and understand the repair order fully to assist you in verifying the concern. If the customer concern does not match your findings when inspecting the vehicle, it is important to interview the customer prior to proceeding in the repair process. A technician must fully understand the customer concern and replicate the concern prior to proceeding with the repair process.

163.

Two technicians are discussing two-piece driveshafts with three universal (U) joints. Technician A states if one of the U-joints is not aligned with the others, a vibration could occur. Technician B says one of the U-joints should be about three to seven degrees out of alignment to prevent harmonic vibrations. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct. All universal joints should be aligned when inspecting one-piece or two-piece driveshafts. If the U-joints are aligned properly, they are in phase. If they are not aligned, they are out of phase. Incorrect assembly of two-piece driveshafts or twisted driveshafts are the most common causes of out of phase universal joints. 

164.

A vehicle's steering wheel does not return to the center position as it should after turning in either direction. Which of the following is the MOST LIKELY cause?

  • Not enough positive caster

  • Not enough positive camber

  • Not enough negative camber

  • A thrust angle of zero degrees

Correct answer: Not enough positive caster

As the caster angle is decreased from specification, steering return to center and directional stability are adversely affected. Negative caster is not specified for late model vehicles. Negative caster would make turning easy, but directional stability and the lack of the return to center feature would make driving much more difficult.

Negative camber is considered to be a tire wear angle and can cause a vehicle to pull, but is not a factor in steering return to center. Zero degrees is a perfect thrust angle measurement, indicating the rear wheels are following the front wheels perfectly. Even an incorrect thrust angle should not stop the steering wheel from returning to the straight-ahead position after a turn. 

165.

A technician is inspecting a water pump for signs of damage. Which of the following should the technician check?

  • Check for leaks near the front of the engine

  • Check for combustion gasses in the coolant

  • Check the engine oil for signs of coolant contamination 

  • Check for coolant leaking in the passenger compartment

Correct answer: Check for leaks near the front of the engine

The most common sign of a damaged water pump is leaking coolant near the front of the engine. Combustion gasses in the coolant and coolant contamination of the engine oil are signs of a leaking head gasket. Coolant leaking in the passenger compartment is a sign of a leaking heater core.

166.

A vehicle has a left low beam headlamp that is not working. Which of the following is the LEAST LIKELY cause?

  • A faulty headlamp switch

  • An open circuit on the power supply circuit leading to the bulb

  • An open circuit on the ground circuit leading to the bulb

  • A burned-out bulb

Correct answer: A faulty headlamp switch

A faulty headlamp switch is least likely to cause one headlamp to be inoperative, because most vehicles use one switch to operate both headlamps. A faulty headlight switch will affect both the left and right headlamps.

An open power wire, open ground wire, or a burned-out bulb are more likely to prevent a single headlamp from operating. 

167.

A tire should be replaced rather than repaired if it has a puncture diameter greater than:

  • 1/4" 

  • 1/8"

  • 1/2"

  • 3/4"

Correct answer: 1/4"

A tire should be repaired on the tread area only, not the sidewall. If the puncture is greater than 1/4", the tire should be replaced, not repaired.

168.

A starter current draw test is being performed. Which of the following is LEAST LIKELY to result in a higher than normal starter current draw?

  • Low engine compression

  • A shorted starter armature

  • A seized or damaged belt-driven accessory

  • A piston seized in the cylinder 

Correct answer: Low engine compression

An engine with low compression requires less power to crank than an engine with good compression. Low engine compression would result in a lower than normal starter current draw. 

A starter with a shorted armature would draw more current than a properly-operating starter. Seized or damaged belt-driven accessories or a piston seized in the cylinder will add mechanical resistance to engine cranking. Anything that places extra mechanical resistance on engine cranking will increase starter current draw.

169.

Which of the following steps should NOT be performed as part of the inspection and service of a leaking rear transmission seal on a light duty truck?

  • Remove the transmission

  • Check the rear bushing to determine if the driveshaft is moving excessively during operation

  • Use a seal installation tool to install the new seal

  • Remove the driveshaft

Correct answer: Remove the transmission

The transmission does not need to be removed to install a rear seal on a light duty truck.

The driveshaft must be removed to gain access to the rear seal of the transmission. A technician should grasp the front driveshaft yoke and check for up-and-down movement prior to removing the driveshaft. This check allows the technician to determine if excessive wear and movement in the rear (tailshaft) bushing caused the rear transmission seal failure. A seal installation tool is used to prevent damage to the seal during installation.

170.

A technician is verifying a customer complaint about clutch operation on a vehicle equipped with a manual transmission. The technician notices the hydraulic clutch will not release completely. Which of the following would be the LEAST LIKELY cause of concern?

  • The clutch linkage needs to be adjusted

  • The clutch master cylinder is leaking 

  • The clutch slave cylinder is leaking

  • A damaged clutch pressure plate

Correct answer: The clutch linkage needs to be adjusted

The least likely cause for the failure of a clutch to release when the pedal is depressed (pressed down) is linkage that needs to be adjusted. Hydraulic clutches do not have clutch linkage, therefore they cannot be adjusted.

Either a leaking clutch master cylinder or leaking clutch slave cylinder can allow air into the clutch hydraulic system and prevent the complete release of the hydraulic clutch. A damaged clutch pressure plate can also prevent the clutch from releasing completely if the pressure plate diaphragm springs are damaged.

171.

Which of the following vehicles would be LEAST LIKELY to have misadjusted cable-type gear shift linkage?

  • A light duty truck with a manual transmission

  • A front-wheel-drive sport utility vehicle with a manual transaxle

  • A full mid-sized car with a manual transaxle

  • A compact car with a manual transaxle

Correct answer: A light duty truck with a manual transmission

Light duty trucks equipped with manual transmissions do not have cable-type shift linkage, thus the linkage cannot be misadjusted. Transmissions in rear-wheel drive vehicles are mounted in the vehicle longitudinally. Longitudinally-mounted transmissions are designed to be close to the driver and the gear shifter connects or is mounted directly to the transmission, making gear shift cables unnecessary.

Transaxles are mounted transversely and do not pass under the passenger's compartment as transmissions do. Linkage must be used to connect the gear shifter to the transaxle because transaxles are mounted further from the driver. The cables are typically three to four feet long and may need to be adjusted. Some manual transaxles are equipped with shift rods instead of shift cables. 

172.

What is the purpose of a drum brake resetting gauge?

  • It allows the technician to adjust brake shoes prior to installing the brake drum.

  • It allows the technician to measure the inside diameter of the brake drum within 0.001 inches. 

  • It allows the technician to retract the automatic adjuster prior to the removal of the brake drum.

  • It allows the technician to push the wheel cylinder pistons into their bore prior to installing the brake shoes.

Correct answer: It allows the technician to adjust brake shoes prior to installing the brake drum.

A brake resetting gauge (or brake adjustment gauge) adjusts to match the inside diameter of the brake drum. After adjusting the brake resetting gauge to match the inside diameter of the brake drum, it is used by a technician to determine if the brake shoes are adjusted correctly. If the brake shoe adjustment does not match the brake resetting gauge, the technician can manually adjust the brake shoes in or out until they match the previously set inside diameter of the brake drum.

The brake resetting gauge is not a measuring instrument and does not have a scale. It is designed to compare diameters only. A resetting gauge does not assist the technician in retracting an automatic adjuster. Star wheel adjusters can be adjusted in or out with the use of a brake spoon. Brake spoons reach through small openings in the drum brake backing plate and allow access to the star wheel for manual adjustment. Wheel cylinder pistons may move slightly during brake shoe installation, but do not need to be pushed into their bore by a special tool.

173.

Two technicians are discussing the diagnosis of damaged powertrain mounts. Technician A says many powertrain mounts are controlled by a module. Technician B says the root cause of a powertrain mount failure could be an oil leak. Who is correct?

  • Both A and B

  • Neither A nor B

  • Technician A

  • Technician B

Correct answer: Both A and B

Both technicians are correct. Technician A is correct because several manufacturers use active powertrain mounts which are controlled by an onboard module. Technician B is correct because oil leaks often damage the rubber on powertrain mounts. 

174.

A technician is measuring the thickness of a rotor after machining it. The thickness measurement must be greater than the specified discard thickness by at least:

  • .030"

  • .125"

  • .200"

  • .005"

Correct answer: .030"

Generally, a rotor should be replaced if it is within .030" of its discard dimension. This allows for the rotor thickness to decrease as the brakes are used and still be at or above the discard specification. The discard specification is also known as the minimum specification and is often stamped or cast into the rotor. 

175.

A customer has a concern about the performance of the heating, ventilation, and air conditioning (HVAC) system. The HVAC system is operating, but does not seem to cool the vehicle interior as well as it should. Which of the following is NOT part of the initial inspection of a HVAC system?

  • Charge the system with the correct amount of refrigerant

  • Operate the temperature control on the control panel and check for a change in outlet temperature

  • Make sure the defrost function works when selected on the control panel

  • Operate the blower at all available settings

Correct answer: Charge the system with the correct amount of refrigerant

Charging the system with the correct amount of refrigerant is part of the repair process, but is not part of an initial inspection (sometimes referred to as performing system pre-checks). 

The initial inspection has several steps that are performed to gather information about the system and aid in the diagnostic process, including:

  • Perform all pre-checks, including operating and changing the temperature control setting and determining if the system is capable of changing discharged air temperature.
  • Check the location of the discharged air when selected, including defrost, vent (or panel), and floor settings.
  • Operate the blower on all settings and check for the proper volume of discharged air.
  • Measure the discharged air temperature with a thermometer, checking condenser fan operation and checking the condenser for airflow restrictions.
  • Check for a worn air conditioning compressor drive belt.

176.

Two technicians are discussing threaded fittings on steel brake lines. Technician A says to use a flare nut wrench to loosen the fittings. Technician B says O-rings are used to seal the fittings. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because the steel line prohibits the use of a box-end wrench on a brake line fitting and an open-end wrench is prone to rounding a fitting off. It is not possible to place the box-end wrench on the brake line fitting because the steel brake line is in the way. A flare nut wrench is the best option for this task.

Technician B is incorrect because steel brake line fittings are classified as compression fittings and do not use O-rings as a seal. The end of the steel line has a flare and the component the brake line attaches to has a seat. This compression-type fitting relies on the threads to compress the brake line flare against the seat in the braking system component to provide a seal. Braking system components with seats to seal hydraulic brake lines include wheel cylinders, master cylinders, and anti-lock brake system hydraulic control units.

177.

Two technicians are discussing cooling fan operation on a vehicle that is equipped with one electric radiator cooling fan. Technician A says the cooling fan should turn on when the engine coolant temperature rises to a predetermined point when the air conditioning is off. Technician B says the cooling fan should remain off until a predetermined coolant temperature when the air conditioning is on. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because most radiator cooling fans turn on when the engine coolant reaches a predetermined temperature around 220 degrees Fahrenheit.

Technician B is incorrect because most electric cooling fans are commanded on when the air conditioning is turned on. This usually coincides with air conditioning compressor operation.

178.

Technician A says worn stabilizer bar bushings can cause a knocking noise when the vehicle is driven over rough surfaces. Technician B says worn stabilizer bar bushings will cause the ride height of an automobile to be too low. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because clunking and knocking noises are a common customer concern when stabilizer bar bushings are worn or damaged.

Technician B is incorrect because stabilizer bars do not affect overall ride height. 

179.

A technician is tightening the lug nuts on a subcompact automobile with four wheel studs on each hub. The tire and wheel assembly is placed on the wheel studs and the technician installs the lug nuts by hand. The lug nuts are located at the 12 o'clock, 3 o'clock, 6 o'clock, and 9 o'clock positions. If a technician uses a torque wrench to tighten the lug nut at the 6 o'clock position first, which lug nut should be tightened next?

  • The lug nut at the 12 o'clock position

  • The lug nut at the 3 o'clock position

  • The lug nut at the 9 o'clock position

  • None of these

Correct answer: The lug nut at the 12 o'clock position

After tightening the lug nut at the 6 o'clock position, the lug nut at the 12 o'clock position should be tightened next. These are the first two steps in the tightening sequence for wheels with four lug nuts. The purpose of a lug nut tightening sequence is to draw the wheel onto the hub evenly. An uneven tightening sequence can cause the wheel to bind on the hub pilot and prevent the wheel from becoming flush with the hub face, even though all lug nuts are tightened to the proper torque specifications. This condition is a major cause of wheel-off incidents.

Tightening the lug nuts at the 3 o'clock or 9 o'clock position in the second step would contribute to an uneven torque sequence. Wheels with five, six, and eight lug nuts will also have unique specified tightening sequences for each application.

180.

A tire has been replaced on an all-wheel drive vehicle and warning lamps illuminate for anti-lock brakes, traction control, and stability control just after leaving the tire shop. Technician A says the replacement tire is likely to be the wrong diameter. Technician B says a tire that is significantly larger or smaller should be placed on the left rear of the vehicle to compensate for rolling resistance.  Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because all-wheel drive vehicles typically have a very narrow tolerance for tire size variance. The specified tire for most vehicles is usually the same for all four tires.

Technician B is incorrect because tires should match. Some vehicles have different front and rear tire sizes specified, but both front tires should be the same and both rear tires should be the same. All vehicles should have the recommended tire size installed per the tire placard, which is typically accessed by opening the driver's door. 

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