×

Quiz Session - Attempts With Random Questions

ASE T Series Exam Questions

Page 10 of 20

181.

Insufficient brake pedal pushrod freeplay is most likely to result in:

  • Brake drag

  • A soft brake pedal

  • A hard brake pedal

  • An illuminated brake warning light

Correct answer: Brake drag

Insufficient brake pedal pushrod freeplay can force the master cylinder pistons forward slightly, allowing the compensating ports to be blocked. This can result in brake drag.

182.

What type of diesel fuel system uses a cam-actuated, integral metering injector that is controlled by the ECM? 

  • EUI

  • HEUI

  • High pressure common rail

  • Mechanical injector pump

Correct answer: EUI

An electronic unit injection (EUI) diesel fuel injection system uses injectors that are cam-actuated, integral metering and controlled by the ECM. 

183.

Correct air brake fittings will have what acronym stamped on them?

  • DOT

  • SAE

  • ABS

  • ISO

Correct answer: DOT

Only Department of Transportation (DOT) air brake fittings should be used when replacing defective fittings. This ensures the fittings are of the same quality and design as the original part.

184.

Technician A says if an A/C system is contaminated it can be flushed. Technician B says contamination can be removed from an A/C system by inserting a filter between the condenser and the evaporator. 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. If contamination enters the system, due either to a failed desiccant bag or a failed compressor, the debris can be removed either by flushing the system or by inserting a filter between the condenser and the evaporator. 

185.

A linkage-assist type of power steering system binds when turning corners. Which of the following is the least likely cause?

  • Low fluid level 

  • Worn kingpins

  • Improper steering gear mesh prelude 

  • A bent worm gear

Correct answer: Low fluid level

Worn kingpins, improper steering gear mesh prelude, or a bent worm gear will cause a linkage-assist power steering system to bind when turning corners. A low fluid level will simply cause the power steering to become noisy when turning the wheel. 

186.

Technician A says coolant freeze protection level can be checked with litmus paper strips. Technician B says coolant freeze protection level can be checked with a refractometer. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Only technician B is correct. Coolant freeze protection can be checked using a hydrometer or refractometer. Litmus paper strips are used to check coolant pH levels. 

187.

Which of the following is most likely to cause a main shaft failure?

  • Starting the vehicle in a gear that is too high

  • A worn transmission mount

  • A broken engine mount

  • An improper driveshaft angle

Correct answer: Starting the vehicle in a gear that is too high

Main shaft failure generally results from overstressing or shock loading the shaft. This can result from starting the vehicle in a gear that is too high. The other options would be more likely to cause input or output shaft failure. 

188.

Frost formation on the evaporator outlet may indicate any of the following except:

  • A low refrigerant charge 

  • A flooded evaporator

  • An excessive refrigerant charge 

  • A stuck-open TXV

Correct answer: A low refrigerant charge

A low refrigerant charge would not cause flooding of the evaporator and subsequent frosting. A stuck-open TXV or an excessive refrigerant charge may lead to evaporator flooding and frost formation.

189.

Technician A says that the high side of the A/C system will normally be cool or cold. Technician B says that the low side of the A/C system contains the dryer.

Who is correct?

  • Neither A nor B

  • Technician A

  • Technician B

  • Both A and B

Correct answer: Neither A nor B

Both technicians are incorrect. The high side of the A/C system will normally be warm or hot. On the other hand, the low side of the A/C system will normally be cool or cold. This is because temperature increases with pressure.

The dryer is located on the high side of the A/C system, along with the condenser.

190.

Technician A says when the diesel particulate filter becomes full, the ECM will introduce fuel to burn the particulate matter. Technician B says when the filter is full, it must be removed and cleaned to get rid of the particulate matter. Who is correct? 

  • Technician A

  • Technician B

  • Neither A nor B

  • Both A and B

Correct answer: Technician A

Only technician A is correct. When the particulate filter becomes full of particulate matter, the ECM will introduce fuel to burn it. The filter only needs to be removed for cleaning if it becomes clogged with ash. 

191.

Technician A says the friction pads in an air brake system don't have to be replaced as a pair. Technician B says most brake shoes are remanufactured and replaced as an assembly. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Only technician B is correct. Most of the time, the shoes are remanufactured and replaced as an assembly with new friction facing installed. Technician A is wrong because friction pads should be replaced as a set.

192.

Technician A says roller lifters should be checked for roller bushing wear. Technician B says that they need to be checked for alignment device problems.

Who is correct?

  • Both A and B

  • Technician B

  • Neither A nor B

  • Technician A

Correct answer: Both A and B

Both technicians are correct. Most engines have roller lifters and should be checked for roller bushing wear and alignment device problems. 

The bushing must prevent excessive play on the axle pin of the lifter. Alignment devices must retain the lifter in the bore to keep the roller axle centerline parallel with the cam lob centerline. 

193.

On an idler arm type of steering linkage, the steering wheel is centered by:

  • Adjusting the tie rod sleeves

  • Adjusting the drag link

  • Adjusting the pitman arm

  • Adjusting the eccentric bolts

Correct answer: Adjusting the tie rod sleeves

On an idler arm type of steering linkage, the steering wheel is centered by adjusting the tie rod sleeves with a rotating tool. A one-quarter turn on the tie rod sleeves moves the steering wheel approximately one inch.

194.

Technician A says that cylinder wall tapers are usually worn more at the bottom. Technician B says that any movement from zero on the dial bore gauge shows cylinder bore wear. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Techncian A is incorrect. Typically, cylinder wall taper occurs at the top where ring loading is the highest. 

Technician B is correct. When measuring cylinder bore wear, any movement from zero indicates wear and should be checked with the manufacturer's specifications. 

195.

At what point would the tire tread on the steer axle fail inspection?

  • 3/32"

  • 2/32"

  • 4/32"

  • 5/32"

Correct answer: 3/32"

To pass inspection, tread depth on the steer axle must measure at least 4/32" at the most worn spot. Tires on the drive, trailer, and dolly must have at least 2/32".

If the tread reaches 3/32" on the steer axle, the truck will fail inspection. 

196.

Battery power must be removed from a circuit before using a DMM to check:

  • Resistance 

  • Voltage 

  • Amperage 

  • Frequency 

Correct answer: Resistance

Ohmmeters are self-powered; therefore, prior to checking resistance, battery power must be removed from the circuit. 

197.

Technician A says exhaust brakes are hydraulically actuated. Technician B says most engine brakes are electronically controlled. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Only technician B is correct. Exhaust brakes are controlled electronically and actuated pneumatically, whereas engine brakes are controlled electronically and actuated hydraulically. 

198.

Technician A says clutch brakes are only used on vehicles with synchronized transmissions. Technician B says the purpose of the clutch brake is to slow or stop the transmission input shaft from rotating to allow gear engagement. Who is correct?

  • Technician B

  • Technician A

  • Both A and B

  • Neither A nor B

Correct answer: Technician B

Only technician B is correct. The clutch brake is a friction disc that mounts to the transmission input shaft between the release bearing and transmission. Its purpose is to slow or stop the transmission input shaft from rotating to allow gear engagement. Clutch brakes are used only on unsynchronized transmissions. 

199.

Which of the following applies the force needed to actuate an HEUI injector?

  • High pressure oil pump

  • Camshaft 

  • Gerotor pump 

  • High pressure fuel pump

Correct answer: High pressure oil pump

The high pressure oil pump provides pressure to each injector in an HEUI system. The ECM activates a solenoid on top of the injector to allow oil pressure to enter, causing the injector to fire. 

200.

Technician A says aerated oil can cause external transmission leaks. Technician B says slipping hydraulic clutches typically result in fluid that is metal-contaminated. Who is correct?

  • Technician A

  • Technician B

  • Both A and B

  • Neither A nor B

Correct answer: Technician A

Only technician A is correct. Hot, aerated oil is thinner than regular oil and can result in external leaks. Technician B is wrong because slipping hydraulic clutches typically result in fluid that is dark, burnt and contaminated with friction material. 

×