ASE G1 Exam Questions

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81.

Which of the following tools should be used to check rotor runout?

  • Dial indicator 

  • Feeler gauge

  • Micrometer 

  • Straight edge 

Correct answer: Dial indicator

Runout, which is described as warpage of the rotor, is measured with a dial indicator. This measurement should be compared to the original equipment manufacturer specifications, and the rotor should be resurfaced or replaced if the runout is excessive.

A micrometer is used to measure thickness. A feeler gauge is used to measure clearance between two objects, and a straight edge is used with a feeler gauge to measure flatness. 

82.

Technician A says a rotor should be washed with soap and water after being resurfaced. Technician B says the same amount of material should be removed from both sides of the rotor. Who is correct?

  • Both A and B

  • Technician A

  • Technician B

  • Neither A nor B

Correct answer: Both A and B

Both technicians are correct.

Thicker rotors are more resistant to distortion from overheating. When you have finished machining the rotors, wash them with soap and water. The soap and water will remove small iron particles from the rotor surface. Iron particles left on the surface of the rotor become embedded into the brake lining material within the first few brake applications. This invites brake noises for the life of the newly installed brake pads.

Remove the same amount of metal from both sides of the rotor. Many brake lathe manufacturers instruct operators to remove the same amount of material from both sides when resurfacing the rotor.

83.

Which of the following must be done before installing an inner tie rod end bellows on a rack and pinion unit?

  • Remove the outer tie rod end

  • Remove the halfshaft

  • Check the level of the power steering fluid

  • Install the outer tie rod end

Correct answer: Remove the outer tie rod end

The inner tie rod end bellows will not fit onto the inner tie rod end without removing the outer tie rod end first. The inner tie rod end bellows is flexible and allows for the extension and retraction of the inner tie rod ends and rack gear during turns while sealing the rack and pinion unit from water and dirt.

The halfshaft is also known as a Constant Velocity (CV) axle and connects the transaxle to the wheel hub. The halfshaft does not need to be removed to install the inner tie rod end bellows. A power steering leak could cause the bellows to deteriorate, but the level of the fluid does not affect the installation of the inner tie rod end bellows. The outer tie rod end needs to be installed after installing the inner tie rod end bellows.

84.

Which of the following would restrict airflow across the air conditioning condenser?

  • Bugs or other road debris being drawn in from the front bumper and grill area

  • A restricted cabin air filter

  • Corrosion in the cooling system

  • Leaves and debris falling into the air inlet near the bottom of the windshield

Correct answer: Bugs or other road debris being drawn in from the front bumper and grill area

Bugs or other road debris being drawn in from the front bumper and grill area often accumulates on and restricts airflow across the air conditioning condenser. The air conditioning condenser is located in front of the engine cooling system radiator on most vehicles. The condenser is responsible for removing heat from the refrigerant as it circulates through the air conditioning system and depends on a good stream of airflow to perform as designed.

Leaves and debris falling into the air inlet near the bottom of the windshield and a restricted cabin air filter affect airflow across the air conditioning evaporator, but will not restrict airflow across the condenser. Corrision in the cooling system can cause engine overheating and can cause customer concerns with the air conditioning system, but will not affect airflow across the condenser.

85.

Technician A says the negative cable should be disconnected from the battery before removing the starter. Technician B says starter shims may be required on some vehicles. Who is correct?

  • Both A and B

  • Technician A

  • Technician B

  • Neither A nor B

Correct answer: Both A and B

Technician A is correct because the negative battery cable should always be disconnected first. This helps to prevent shorting the battery power circuit with a wrench while removing or installing the starter.

Technician B is correct because some vehicles require starter shims to correct starter drive gear mesh issues. Some older domestic vehicles may need shims to increase or decrease the distance between the starter drive gear and the flywheel ring gear to correct gear mesh issues. Gear mesh issues can be determined by noisy engagement or disengagement of the starter drive gear. 

86.

Two technicians are discussing service procedures for tapered roller bearings. Technician A says the grease seal can be reused after performing a wheel bearing service. Technician B says the bearings should be washed in solvent. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Technician B is correct because tapered roller bearings should be cleaned with solvent once removed.

Technician A is incorrect because the grease seal should always be replaced when performing a wheel bearing service. 

87.

Multi-ribbed serpentine belts should be checked for a few different conditions during a periodic inspection. Which of the following conditions usually occurs first on modern multi-ribbed serpentine belts?

  • Wear on the ribs

  • Wear along the sides of the belt

  • Belt cracking

  • Belt chunking

Correct answer: Wear on the ribs

The ribs of a multi-ribbed serpentine belt usually wear before other signs of age or wear occur.

Older belts were made with neoprene and were prone to cracking and chunking earlier in their service life. Chunking occurs when cracked pieces of the multi-V ribs fall off. Modern belts are made with Ethylene Propylene Diene Monomer (EPDM) and typically do not show signs of wear upon visual inspection. A belt wear gauge must be used to measure multi-ribbed serpentine belt wear. 

88.

Two technicians are discussing automotive battery removal and installation. Technician A says a memory saver device should be used during the replacement of a battery. Technician B says the negative battery cable clamp should be attached to the battery first when installing a battery. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because memory saver devices can streamline the process of replacing an automotive battery in a modern automobile. Many automobiles have modules that will lose important diagnostic information stored in onboard modules if they lose power. Disconnecting a battery without having a memory saver device installed can activate anti-theft functions in the radio or cause diagnostic trouble codes to be set in numerous onboard control modules. Memory saver devices typically keep onboard modules and other electronic devices powered up while the battery is disconnected and are either connected directly to the battery cables, the onboard diagnostic connector, or a power port in the passenger's compartment.

Technician B is incorrect because the positive cable should be attached to the battery first when installing a battery. Installing the negative cable last is the safest option. If a technician accidentally touches the wrench to an electrical ground while attaching the negative cable last, current will not flow through the wrench. If a technician is unaware of the risk and attaches the positive cable last, the wrench could accidentally cause an electrical short and cause hundreds of amps to flow from the battery positive cable, through the wrench, and to ground.

89.

Which of the following is NOT a step in the procedure when performing a fluid and filter service on an automatic transmission?

  • Apply generous amounts of sealant to both sides of the new pan gasket

  • Remove the transmission filter

  • Clean the collecting magnet

  • Properly torque the transmission pan bolts

Correct answer: Apply generous amounts of sealant to both sides of the new pan gasket

Applying generous amounts of sealant to both sides of the new pan gasket can cause some of it to be squeezed into the transmission pan when the pan bolts are torqued. This would cause the sealer to contaminate the transmission fluid and would likely cause a restriction in the filter or other components.

Removing the filter and properly torquing the pan bolts are steps in the process of servicing a transmission. Many transmission pans have magnets in them to catch iron or steel particles, preventing their circulation throughout the hydraulic circuits of the transmission.

90.

A manual transmission is difficult to shift into gear. Gear clash is sometimes heard when shifting into gear. A technician verifies the symptoms and suspects the clutch is not releasing properly. What is the MOST LIKELY cause of a clutch failing to release properly?

  • A leaking hydraulic clutch system

  • Weak springs in the clutch pressure plate

  • A worn clutch disc

  • A damaged countershaft 

Correct answer: A leaking hydraulic clutch system

The hydraulic clutch system provides pressure to release the clutch and will not work properly when a leak occurs. A clutch that does not release properly usually requires increased shifting effort and causes gear clash when the driver tries to shift into gear.

The pressure plate springs and the clutch disc are responsible for applying the clutch and are not likely to cause this concern. Pressure plate and clutch disc issues usually result in clutch slippage. The countershaft is located in the transmission and does not cause issues related to the release of the clutch.

91.

A technician notices a rhythmic clicking noise coming from the front end of a vehicle. The noise is noticeable when accelerating while turning. The MOST LIKELY cause is: 

  • A damaged outer CV joint

  • A damaged inner CV joint

  • Damaged wheel bearings

  • A damaged drivetrain mount

Correct answer: A damaged outer CV joint

A damaged outer Constant Velocity (CV) joint will cause a rhythmic clicking noise when the vehicle is turning and accelerating at the same time. The outer CV joint is responsible for transmitting torque to the wheel hub at any steering angle.

The angle of the inner CV joint varies slightly as the suspension allows the vehicle to move up and down, and will not cause a clicking noise upon acceleration while turning. Damaged wheel bearings may make a clicking or popping noise at slow speeds, but are more sensitive to road speed than acceleration. A drivetrain mount is likely to make a noise on initial acceleration, but it will not be more noticeable while turning.

92.

A technician is removing an inner tie rod end on a rack and pinion unit. Which of the following does NOT need to be removed as part of the process?

  • The Pittman arm

  • The outer tie rod

  • The jam nut

  • The bellows 

Correct answer: The Pittman arm

Pittman arms are used on steering systems with recirculating ball steering gears. Rack and pinion steering eliminates the need for Pittman arms.

All other components listed must be removed before removing an inner toe rod end on a rack and pinion unit. 

93.

A technician is using jumper cables to jump-start a dead battery. Which of the following should be the last connection made?

  • The negative cable of the vehicle being started

  • The negative cable of the booster vehicle 

  • The positive cable of the booster vehicle 

  • The positive cable of the vehicle being started

Correct answer: The negative cable of the vehicle being started

When jump-starting a dead battery, connecting the negative cable to the vehicle being started is accepted as the safest last step. Avoid connecting the jumper cable near the battery, which may have vented explosive hydrogen gas. 

94.

Technician A says exterior trim pieces, shrouds, or other components often have to be removed to inspect the air conditioning condenser for damage or debris that can restrict airflow. Technician B says the condenser should be cleaned with a high-pressure sprayer if debris is found on it. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because modern automobiles have numerous air dams, shrouds, and trim pieces used for aerodynamics and to direct air to the condenser, radiator, and engine air intake. The air dams, shrouds, and trim pieces often have to be removed to allow the technician to gain access and visually inspect the air conditioning condenser.

Technician B is incorrect because high-pressure sprayers will deform the cooling fins in the condenser and further contribute to restricted airflow. Fins may be straightened with a condenser comb and chemical cleaners may be effective in cleaning organic debris from condenser fins, but replacing the condenser is usually the only way to restore proper condenser operation.

95.

A technician is inspecting damage on a tapered roller bearing and finds small indentations on the rollers and outer race. This is most likely caused by:

  • Bearing contamination by hard particles

  • Over lubrication 

  • Water damage

  • Overheating 

Correct answer: Bearing contamination by hard particles

Surface indentations on the bearing race and rollers are usually the result of contamination by particles as hard or harder than the bearing material. Bearings and races with this type of damage should be replaced. Always replace the bearing and race as a unit.

Over lubrication is not a common occurrence in serviceable wheel bearings. Water can cause dilution of grease, but is usually evidenced by the discoloration and inconsistency of grease texture. The overheating of bearings causes uniform discoloration of the tapered rollers and outer race. 

96.

A vehicle has excessive tire wear on the outer edge of the front tire on the passenger's side. The other tires do not have signs of uneven tire wear. What is the MOST LIKELY cause of the passenger's side front tire wear?

  • Excessive positive camber

  • A camber angle that is too low

  • Excessive toe in

  • Incorrect front thrust angle

Correct answer: Excessive positive camber

Excessive positive camber will cause outside tire wear.

A caster angle that is too low will cause inside tire wear. Incorrect toe will affect both front or both rear tires. Incorrect thrust angle does not affect tire wear. 

97.

Technician A says modern engine coolant is environmentally friendly and can be poured on the ground after use. Technician B says it's best to remove hoses when the engine is hot and the coolant level is full so they slide off easily. Who is correct?

  • Neither A nor B

  • Technician B

  • Both A and B

  • Technician A

Correct answer: Neither A nor B

Care should be taken to contain all coolant for recycling. Hoses should never be removed when the engine is hot. Hot coolant can cause burns. Coolant should be drained prior to the removal of hoses.

98.

Disconnecting the battery on modern vehicles may erase what type of memory in on-board modules?

  • Keep alive memory

  • Read-only memory

  • Erasable programmable read-only memory

  • Programmable read-only memory

Correct answer: Keep alive memory

Keep alive memory (KAM) data is stored in various on-board control modules. When the battery is disconnected, the KAM data is usually lost. Because of this, the engine and transmission may perform erratically until the vehicle has gone through a relearn process. Diagnostic trouble codes and on-board monitor cycles may also be lost.

99.

A noise is heard coming from the bottom end of the engine. The noise does not go away when fuel is removed from that cylinder. Which of the following is the MOST LIKELY cause?

  • Main bearing knock

  • Wrist pin noise

  • Worn lifters

  • Connecting rod knock

Correct answer: Main bearing knock

A bottom end engine knock that does not go away when spark or fuel is removed from the cylinder is most likely caused by excessive clearance in the crankshaft main bearings.

A bottom end engine noise that does go away when fuel is cut is likely to be related to the connecting rod or wrist pin. Valvetrain noises including lifters and pushrods typically cause a tapping or ticking sound heard in the upper end of the engine.

100.

Two technicians are discussing proper procedure for the removal and installation of the U-joint (universal joint) caps as part of the process of replacing a faulty U-joint. Technician A says the U-joint caps should be pressed on and off. Technician B says a hammer and a correctly-sized punch should be used to remove and install U-joint caps. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Technician A is correct because a press is much less likely to damage the U-joint cap, driveshaft yoke, or the driveshaft tube during the removal and installation of the U-joint caps. 

Technician B is incorrect because a punch driven by a hammer can crack the U-joint cap or bend the driveshaft tube or yoke.