AY Honor Automobile Mechanics Answer Key used by North American Division

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Skill Level

2

Year

1928

Version

06.12.2021

Approval Authority

North American Division

Automobile Mechanics Honor.png
Automobile Mechanics
Vocational
Skill Level
123
Approval Authority
North American Division
Year of Introduction

1928

See also

Technician Master Award
Automobile Mechanics - Advanced


1

Properly start an automobile or light truck engine with an automatic transmission, and then one with a standard transmission. Briefly explain why it is necessary for the engine to have the proper oil, water, fuel, and battery pressures and levels for proper engine operation.



2

Briefly describe how a keyless ignition system functions. Properly start an automobile or light truck with a push button start/stop assembly.



3

Briefly explain the following concepts:



3a

The principles of four-cycle engine vs. a two-cycle engine.



3b

The difference between a gasoline and a diesel engine.



3c

The major differences between carburetor fuel systems and fuel-injection systems.



3d

The principles of an electric vehicle.




4

What is an ECU? Give three practical examples of its use.



5

Briefly explain the function of the following:



5a

Engine: crankshaft, connecting rods, pistons, camshaft, valves, oil pump, carburetor, fuel injectors, ignition distributor, fuel distributor, electrical system including alternator, battery, and regulator



5b

Transmission: The difference between standard transmission and automatic transmission, and how the engine torque is transmitted to both kinds of transmissions; the purpose of overdrive



5c

Drivetrain: The difference between rear wheel drive, front wheel drive, and all-wheel drive



5d

Brakes: The difference between drum brakes and disk brakes, standard brakes and power brakes, and the parking brake




6

Describe two techniques used to measure the tread depth of a tire.



7

What is a tire pressure gauge? Briefly describe:



7a

where to check for the recommended tire pressure



7b

the process of adjusting the tire pressure as necessary



7c

what takes place when the tire pressure is low




8

How often should the engine oil, transmission oil, and cooling fluid be changed?



9

Give some pointers on proper care of the vehicle and its finish, both interior and exterior.



10

Be able to describe and locate each of the following items, if equipped.



10a

Fuel Pump



10b

Gaskets



10c

Muffler



10d

Spark Plugs



10e

Timing Belt



10f

Water Pump



10g

Radiator



10h

Catalytic Converter



10i

Paddle Shifters



10j

Single/Dual Exhaust



10k

Cruise Control



10l

Suspension (Shocks & Struts)



10m

Brake Assist



10n

Air Bags



10o

Keyless Entry



10p

Fuse Box



10q

Master Cylinder




11

Perform typical automotive maintenance as listed below:



11a

Check engine and transmission oil levels.



11b

Check water/antifreeze level. Change and flush the cooling system.



11c

Change engine oil and filter.



11d

Change a tire, following proper safety procedure.



11e

Lubricate the chassis according to the vehicle service manual.



11f

Check windshield wipers and replace if necessary.



11g

Check windshield wiper fluid reservoir and adjust fluid levels as necessary.



11h

Check power steering fluid levels.



11i

Check front, rear, and turning signal lights.



11j

Check air filter and replace if necessary.



11k

Check cabin filter and replace if necessary.





References