auto service exam - grafton school district · name the strokes of the 4 cycle: • intake (down...
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Auto Service Exam
General Shop Information, Tools, & Safety
“Flat Rate” refers to a system of billing for repairs as well as a way of earning, based on the time it should take to do a job.
• True
“Drive Size” of either a ratchet or a socket refers to the size of the square lug & square hole where they snap together.
• True
A service writer or a service advisor is the customerto technician liaison in an automotive dealership.
• True
A torxtip and a phillipshead screwdriver both have the same
shape and can be used interchangeably.
• False
Precision tools such as micrometers, dial calipers, and
dial indicators can make measurements to the nearest
.001 inch or .01 mm.
• True
The acronym NIASE stands for: National Institute of:
• Automotive Service Excellence
Why should engine oil & filter be changed at regular intervals between 3,0005,000 miles?
• To extend the service life of the engine by maintaining proper and clean lubrication
What are the advantages of using airpowered, impact
wrenches?
• Impact wrenches speed up work, can increase production, and are used for their tremendous twisting force
Why should headlights be properly aimed?
• Provide the driver with a good view of the road after daylight hours
• Prevent oncoming traffic from being blinded by improper aim
• Allow a view of the centerline as well as the sideoftheroad white line
List the 4 basic divisions of a vehicle as discussed this semester: • Body • Chassis • Drive Train • Engine
Name 4 fluids that can be checked or serviced from under the hood: • Engine Oil • Engine Coolant • Brake & Clutch Fluid • Automatic Transmission Fluid • Battery Electrolyte • Power Steering Fluid • Windshield Washer Fluid
Explain either the DRL or the CHMSL/CHMBL lighting system: • DRL are Daytime Running Lights • Headlight operate at reduced voltage all the while the vehicle is running & in gear
• CHMSL are the Center High Mount Stop Lights
• Located higher than the regular brake lamps to provide a better view in traffic
Diagnostic machine used to measure engine emissions at the tailpipe before and after a tuneup
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
These shallow or deep, square drive tools are overbuilt to be used with either electric or air
powered wrenches • Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Used to measure specific gravity of either battery electrolyte or ethylene glycol engine coolant
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Handheld wrench with two closed ends
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Used to measure engine crankshaft speed and express it in rpm’s
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Used to make precise measurements to the nearest .001”
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Handheld wrench with one open end and one closed end
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Electrical test equipment capable of measuring voltage, amperage, resistance, temperature, rpm, capacitance, and continuity
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Handheld wrench not intended for initial loosening or final tightening of fasteners
• Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
This wrench is used when exact tightness in either footpounds, inchpounds, or newtonmeters is
desired • Hydrometer • Impact Sockets • Torque Wrench • Box Wrench • Tachometer
• Open End Wrench • Combination Wrench • Digital Multimeter • 5Gas Infrared Analyzer • Micrometer & Dial Caliper
Auto Service Exam
Theory of Engine Operation & Systems
The 4 stroke cycle, reciprocating piston engine is the most
common automobile engine in use today.
• True
Octane rating is an indication of how well engine oil resists
burning.
• False
The camshaft can be connected to the crankshaft by either
gears, sprockets & chains, or a cogged belt.
• True
The piston of an engine has some skirt length to prevent it from tipping sideways as it reciprocates in the cylinder.
• True
Of the Lhead, Ihead, Fhead, & Thead valve arrangements,
the Ihead (OHV) valve arrangement is most common.
• True
Name the strokes of the 4 cycle: • Intake (down stroke with intake valve open) • Compression (upstroke with both valves closed) • Power (forceful down stroke with fuel burning) • Exhaust (upstroke with exhaust valve open)
• 180º crankshaft rotation for each stroke (720º Total) • 90º camshaft rotation for each stroke (360º Total)
Name 2 engine cylinder arrangements:
• InLine • InLine Slant • VShape • Flat or Opposed (Boxer)
Name the 3 parts of the engine fire triangle:
• Air • Fuel • Heat of Compression & Spark
From what nonrenewable resource is gasoline refined?
• Petroleum or Crude Oil
Define “engine firing order”
• The sequence in which the air & fuel mixture is ignited in the cylinders
Define “engine displacement”
• Cylinder Volume • B x B x S x .785
• Total Cylinder Volume • B x B x S x .785 x # of Cylinders
List 4 ways of classifying engines:
• Horsepower, Torque, Displacement • By Systems like Cooling & Ignition & Fuel • Year, Make, Mounting & Location • # of Valves, # of Camshafts, # of Cylinders • Cylinder Arrangement, Valve Arrangement • Camshaft Drives, Valve Train, Comb Chamber • Turbo or Supercharged, Cycle of Operation
What is the purpose of the piston rings & what test can tell
their condition? • Piston Rings seal the piston to the cylinder walls preventing blowby into the crankcase
• The compression test tells their condition • Ring end gap measures their wear
Engine component which distributes the incoming air to the cylinders and in an EFI engine, may contain the fuel injectors
• Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
Mechanical, Electrical Fuel, Exhaust, Emission Control,
Lubrication, Ignition, Cooling, Electronic Engine Management • Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
Engine component, often called the vibration damper, has the
purpose of smoothing or balancing out power impulses
• Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
The pressure, less than atmospheric, caused by the pistons
moving downward on intake strokes
• Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
Name for all of the parts associated with operation of the engine
poppet valves
• Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
circular motion
• Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
Comparison of cylinder volume with the piston at BDC to that of the combustion chamber volume
with the piston at TDC • Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
back and forth or up and down motion
• Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
Engine component which collects spent combustion gases and delivers them to the muffler
• Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
Action of breaking fuel up into particles and mixing it with air to form a burnable mixture, done by
the carburetor or injectors • Compression Ratio • Vacuum • Exhaust Manifold • Rotary Motion • Valve Train
• Intake Manifold • Reciprocating Motion • Atomization • Harmonic Balancer • Engine Systems
Auto Service Exam
Cooling, Lubrication, & Air Conditioning
A proper mixture of antifreeze & water will protect a cooling system against freezing and
also raise the coolant boil point.
• True
Air conditioning systems can cool as well as dehumidify the passenger compartment air.
• True
The best API oil rating for gasoline engine oils is now
“SA”.
• False, it’s SM
SAE 5w30 and SAE 10w30 are often recommended oil
viscosities for modern day engines.
• True
Heat transfer is always from an area or an object with more heat to an area or an object
with less heat.
• True
What is the recommended mixture (%’s) of antifreeze and water for a cooling system?
• 50% water & 50% engine coolant • Either ethylene glycol or propylene glycol
List the 4 basic parts of an automotive air conditioning
system: • Compressor • Condenser • Expansion Valve or Expansion Tube • Evaporator
Define “viscosity”:
• Resistance of a liquid, such as engine oil to flow
• Higher Viscosity #’s = thicker oil • Lower Viscosity #’s = thinner oil
Where is the automatic transmission cooler is located: • In the outlet tank of the radiator
What part controls the coolant exchange between the radiator & the reservoir in a closed
cooling system?
• The Radiator Pressure Cap
What is the purpose of an oil filter antidrain back valve?
• Keeps oil in the filter after the engine is shut off so that a “dry start” is prevented
What is the “short name” of the replacement for R12?
& why has it been mandated by federal law?
• R134a • Because R12 causes ozone depletion which leads to increases in skin cancer
Define heat conduction, convection, & radiation
• Conduction is heat transfer through physical contact
• Convection is heat transfer through air movement
• Radiation is heat transfer through light waves
List 4 jobs that oil performs:
• Lubricates • Cleans • Cools • Seals
Passages in the engine block through which oil circulates on its way to lubricate internal engine
parts • Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Small heat exchanger used to warm the passenger compartment
• Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Allows dirty oil to circulate past a clogged oil filter to prevent lack of
lubrication
• Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Device used to redirect blowby gases back into the incoming air stream with the goal of preventing
crankcase oil dilution • Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
The main heat exchanger in a liquid cooling system
• Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Impeller used to circulate coolant through the liquid cooling system
• Water Pump • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Passages in the engine block and cylinder heads through which coolant circulates to cool the
engine • Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Wax pellet, temperature sensitive device used to control coolant flow out of the engine block on its way
to the radiator • Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
The quantity of heat needed to raise the temperature of one pound of water one degree
Fahrenheit • Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Unit in an A.C. system which operates as both a storage device for refrigerant and contains a desiccant to absorb moisture
• Water Jackets • Oil Pump • Oil Galleries • Thermostat • Radiator
• PCV Valve • 1 British Thermal Unit • ReceiverDrier or Accumulator • Heater Core • Oil Filter ByPass Valve
Auto Service Exam
Electrical Theory, Charging, Starting, Ignition, and Accessory Systems
Battery electrolyte is acidic & corrosive and worse yet, the hydrogen gas given off from it
can be very explosive.
• True
Resistor spark plugs and suppression (TVRS) plug wires contain extra resistance in an effort to eliminate radio static
(RFI).
• True
Electricity can be produced by moving magnetic fields through coiled conductors.
• True
As engine load changes, spark timing must also change. This can easily be done by the PCM.
• True
On distributorless ignition systems, one coil fires two spark plugs at a time one burns air & fuel, the other is wasted on the exhaust stroke.
• True
What 3 things make up a basic circuit?
• Consumer or Load (has the resistance) • Source (has the voltage) • Conductive Path (carries the amperage)
Name the 3 basic types of circuits:
• Series (links of a chain) • Parallel (ladder) • SeriesParallel (combination of the two)
What is the name for the comparison of the density of battery electrolyte to water?
• Specific Gravity • Should be 1.280 for a fully charged battery • Would be 1.000 for a totally dead battery
Define “Ohm’s Law”:
• Mathematical relationship between volts, amps, and ohms in every circuit
Which electrode is the one to bend to adjust spark plug gap?
• Side or Ground Electrode
Which spark plug has a hotter heat range?
• Long nose has a long cooling path and is a hotter running plug
• Short nose has a shorter cooling path and is a cooler running plug
What makes up battery electrolyte?
• 36% sulfuric acid H2SO4
• 64% water H2O
Name two devices to protect circuit components against
amperage overloads: • Fuses • Fusible Links • Circuit Breakers
What side of electrical circuits do the body, frame & engine block
form?
• The Ground Side
What tool is used to check spark timing on distributor
ignition systems?
• Timing Light
Compare & Contrast the Primary & Secondary
Ignition Circuits • Primary is low voltage
Contains ignition module or PCM • Secondary is high voltage
Contains Spark Plugs, Plug Wires, etc.
Resistance to electricity flow
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Intensity or rate of electron flow also known as current flow
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Electromotive force
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
How large of a load a battery can sustain for 30 seconds at zero
degrees Fahrenheit
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Device that recharges the battery and supplies electricity to all systems while the engine is
running • Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Length of time that a battery can deliver current of 20 amps without being charged and without falling
below 9.6 volts • Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Device that takes in 12 primary volts and transforms it to the
kilovolts needed to fire the spark plugs
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Cycling circuit breaker used to blink the turn signals and hazard
lamps
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Component that has a gear to connect the starter armature to
the flywheel or flex plate ring gear during the cranking process
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Controls the voltage output of the alternator keeping it at about 14.2
with the vehicle running
• Cold Cranking Amps • Alternator • Ignition Coil • Reserve Capacity • Ohms
• Voltage Regulator • Starter Drive • Amperage • Flasher • Voltage
Auto Service Exam
Fuel Systems, Electronic Engine Controls, and Emission Control Systems
Sensors are PCM inputs, but fuel injectors, ignition coils & emission control solenoids are outputs controlled by the PCM
• True
If air coming into an engine can be kept at a temperature of 300 degrees, emissions,
performance & mpg will be optimum.
• False!!
Catalytic converters are capable of lowering all three of the major pollutants HC, CO,
and NOx.
• True
Carburetors (carbasaurus☺) are air & fuel mixing devices that used pressure differences & mechanical components to
meter & atomize fuel.
• True
“Ontime” of the fuel injectors is also known as “pulse width” and is controlled by the PCM
to adjust fuel trim.
• True
Name 2 exhaust system parts:
• Exhaust Manifold • Crossover Pipe • Catalytic Converter • Muffler • Tailpipe • Hangers & Clamps
What steps should be taken to start a “flooded” engine & why
does this work? • Placing the throttle in the WOT position and cranking the engine “unfloods” the engine.
• It signals the PCM to enter “clear flood mode” where the injectors are not pulsed.
Name two devices used to raise engine volumetric efficiency:
• Turbochargersexhaust driven • Superchargersbelt driven
Name 3 PCM/EEC sensors:
• TPS, ECT, IAT • CKP, CMP, VSS • P/N, BPP, & PS Switches • MAP, MAF, BARO • HO2S, upstream & downstream
Cold engines, ignoring inactive HO2S, following
preprogrammed instructions are in:
• Open Loop
Warm engines, with active HO2S , that are constantly
adjusting A/F & timing are in:
• Closed Loop
Engines with missing or very confusing input data cause the
PCM to enter this mode:
• Limpin Mode or FailSafe Mode
Emission Control Systems
• PCV takes blowby out of the crankcase & reburns it
• EVAP has a charcoal canister & sealed fuel tank to capture HC vapors
• EGR puts exhaust in with fresh A/F to cool the burn
Emission Control Systems
• CAT chemical reaction in the exhaust system at over 1000 Fº
• AIR injects oxidizing secondary fresh air into the exhaust manifold
• TAC warms incoming air to promote better burning
Single point electronic fuel injection
• Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
Pollutant formed by burning fuel at high pressures and
temperatures over 2500 degrees Fahrenheit
• Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
Platinum, Palladium,Rhodium
• Catalysts • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
The material used in evaporative canisters to capture/absorb fuel
vapors from the fuel tank
• Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
The most efficient type of multi port fuel injection system because it pulses injectors in the firing
order of the engine • Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
Type of fuel pump used on EFI systems usually located inside the
fuel tank
• Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
Pollutant formed by burning fuel with insufficient amounts of oxygen poison and deadly
• Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
Type of fuel pump used on carbureted fuel systems driven by the camshaft and fastened to the
engine block • Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
A word for the theoretically perfect air/fuel ratio which will
result in exhaust capable of being treated by the catalytic converter • Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
Pollutant formed by unburned fuel usually due to a misfire in the engine or by evaporation of fuel
• Catalyst • Carbon Monoxide • Oxides of Nitrogen • Charcoal or Carbon • Hydrocarbons
• Mechanical Fuel Pump • Stoichiometric • Electric Fuel Pump • Sequential EFI • Throttle Body EFI
Auto Service Exam
Tires, Wheels, Brakes, Steering & Suspension
A torn or leaking CVjoint boot on a FWD half shaft should be replaced as soon as possible.
• True
Power steering fluid & automatic transmission fluid can be safely substituted for
DOT3 brake fluid in the master cylinder.
• False
The proper tire inflation specs for every tire are conveniently located on each tire’s sidewall.
• False
Asbestos, a heat resistant friction material used in some older brakes and clutches, is a
carcinogen (cancer causing material).
• True
The Uniform Tire Quality Grading System rates the tread wear, traction and temperature resistance of tires. (the 3 T’s)
• True
Define & give the cause of “brake fade”
• Inefficient braking due to overheated linings • Pedal feels firm, but loss of friction occurs
What is the advantage/purpose of “power brakes”?
• Power assisted brakes use either engine vacuum or power steering pressure to make pedal application easier for the driver
What is the advantage of “ABS”?
• Antilock brake systems result in safer stopping by preventing wheel lockup and skidding during braking.
Why are diagonally split & frontrear split hydraulic
systems desirable? • In the event of a brake hydraulic leak, only half of the system fails.
• The remaining two wheels may be able to brake and steer
Name 2 advantages of proper tire inflation:
• Proper inflation extends tire life, is safer, handles better, and promotes even wear on the tires.
What are the 2 basic designs of service brakes?
• Disc • Drum
Parking Brake & Service Brakes are operated:
• Parking brakes mechanically operate the rear brakes only by using cables & levers
• Service brakes hydraulically operate all four corners using a contained fluid
Describe the tire with the size: P 225 / 50 Z R 15
• Passenger car tire • 225 millimeters wide • 50% profile or aspect ratio • Z speed rating • Radial ply design • 15” rim diameter
System that uses the antilock brake components to prevent wheel spin on acceleration
• Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
Suspension components responsible for limiting up and down movement of springs
• Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
Drive train component which allows one wheel to turn slower and one faster during cornering
• Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
Action of a tire & wheel shaking back & forth across the road’s surface because of a dynamic
imbalance problem • Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
The inward or outward pointing of the tire as it rolls down the road too much results in saw tooth or
feather edge tire wear • Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
Drive train component made up of a combination of a transmission
and a differential
• Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
During tire manufacturing, the action of fusing belts and plies together with heat and pressure
• Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
The process of removal of air from a hydraulic brake system or from
a hydraulic clutch system
• Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
The inward or outward tilt of the tires at the top too much results in either inside or outside tire tread
wear • Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding
Action of a tire & wheel jumping up and down as they revolve because of a static imbalance
problem • Wheel Shimmy • Differential • Transaxle • Wheel Tramp • Toe
• Shocks & Struts • Automatic Traction Control • Vulcanization • Camber • Bleeding