Autotec-10: Week 2 Content

Ratcheting Box Wrench

- used for special applications - e.g., as muffler clamps

When the oil level is below the "add" line on the dipstick, how much oil should be added?

1 quart of oil

The bolts holding an engine sling should go into the block to a depth at least ____ times the diameter of the fastener.

1.5

What is the angle of the head of an open-end wrench?

15º

How many hood latches should a vehicle have?

2

Spin-on filters typically are tightened ___ turn(s) after the filter contacts the block.

5

If an air compressor runs for 6 out of every 10 minutes, what is its duty cycle?

60%

Which of the following statements is not correct? a. Thick oil has a lower viscosity than thin oil. b. Multi-viscosity oil can reach bearings faster than single-viscosity oil when the engine is first started. c. Detergents keep small particles suspended in the oil so the filter can remove them. d. Detergents help keep the surfaces within the engine clean.

A

What is a chain hoist?

A chain or cable attached to the block to help hoist an engine out of a car.

Which type of oil filter uses an anti-drainback valve to prevent it from emptying of oil when the engine is shut off? a. A vertically mounted full-flow filter b. A horizontally mounted full-flow oil filter c. Both a and b d. Neither a nor b

A horizontally mounted full-flow oil filter.

What is a cherry picker?

A shop crane

What are the different gears in a gear head multiplier?

A sun gear A ring gear Planetary pinions

Combination Wrench

A wrench that has a box-end wrench on one end and an open-end wrench on the other side.

Vise Grip

Adjustable clamping pliers that can be locked onto work

When a stream of water leaks out from under the passenger compartment of the vehicle, what could be the cause?

Air conditioning leak

Which of the following is/are true about drilling holes? a. A single-speed drill motor with a 1/2-inch chuck turns at a faster speed than one with 3/8-inch chuck. b. Faster speeds are used with larger drill bits. c. A drill motor is classified according to the largest drill bit its chuck can accommodate. d. All of the above

All of the above

Which of the following are true about lifting a vehicle using incorrect lift points? a. Damage to suspension or steering parts can result. b. The windshield can be loosened or damaged. c. The vehicle's center of gravity can be off. d. Any of the above

Any of the above

Under normal conditions, when is the only time when an oil film does not separate engine parts?

At cold start

All of the following statements are true about lifting a vehicle except: a. Unibody cars should be lifted from the edge of the car body at the rocker panel. b. A frame-contact lift is the best choice for raising a vehicle with the engine removed. c. Raised lift pads should be positioned in a "V" or "A" but not facing the same direction. d. Always make sure that all lift pads are touching the lift points.

B

What tool is used with a puller to remove a bearing from a shaft?

Bearing separator

When a technician attempts to turn a fan pulley on an older vehicle, what is being tested?

Belt tension

Technician A says that a special wire brush is needed if it will be rotated at high rpm. Technician B says that some wire brushes have plastic molded into them. Who is right?

Both A & B

Technician A says that an 8-point socket can be used on square drive heads. Technician B says that a 12-point socket can be used on a 6-point head. Who is right?

Both A & B

Technician A says that metal that is heated and then quenched will be made more brittle. Technician B says that metal that is heated and allowed to cool slowly will be softened. Who is right?

Both A & B

Technician A says that using a 3/8 in. regulator in the middle of a 1/2 in. air line will result in less airflow through the lines. Technician B says that water must be periodically bled from an air compressor. Who is right?

Both A & B

Technician A says to position a car on a two-post surface mount lift so that the driver's side door can be opened all of the way. Technician B says to raise the car until its wheels are about 6 feet off the ground and shake it to see if it is safely mounted. Who is right?

Both A & B

What is the name of the oil filter part that allows the oil to get to the engine bearings even if the filter is plugged?

By-pass valve

Each of the following statements about oil is true except: a. When oil oxidizes, it becomes heavier and forms varnish deposits. b. Driving on the freeway is generally easier on the engine than in-town driving. c. The "W" in SAE 10W-40 stands for "weight." d. Oil does not wear out, but its additives do.

C

Which of the following is not true when installing an oil filter? a. Tighten the filter an additional two-thirds to three-quarter turn after the filter O-ring touches the mount surface. b. Compare the old filter mount surface to the new filter. c. Be sure that the rubber O-ring is dry. d. Start the engine after adding oil and check for leaks.

C

What units are the useful capacity of an air compressor measured in?

Cubic feet / minute

All of the following are true about hacksaws except: a. A hacksaw only cuts on the forward stroke. b. A coarse hacksaw blade (one with fewer teeth) is better for cutting thick steel than a fine blade. c. A fine hacksaw blade (one with many teeth) is better for cutting sheet metal. d. A hacksaw blade is hardened in the center, so it is best to saw only with the center portion of the blade.

D

All of the following are true about lifting an engine except: a. When a shop crane that is carrying an engine is being moved, the engine should be positioned as low to the ground as possible. b. A chain fall can sometimes damage vehicle paint. c. A shop crane is sometimes easier to use than a chain fall. d. Bolts fastened to an engine sling should be slightly loose against the engine block.

D

What is the minimum DOT brake fluid standard that can be used in automobiles?

DOT 3 brake fluid

What is the job of a shock absorber?

Dampens the unwanted rebound motion of the vehicle's springs.

Transmission Jack

Designed to hold transmission and transaxle during removal or installation

If sludge forms in a modern engine, what additive is probably depleted?

Detergents/dispersants

Which of the following situations could allow oil to bypass a full-flow oil filter and go directly to the engine bearings? a. When the oil is cold and thick b. When the oil filter is dirty and restricted c. Either A or B d. Oil never bypasses a full-flow oil filter.

Either A or B

A single-post lift is handy for transmission removal. True or false?

False

What is the tool used to loosen and tighten fuel line fittings?

Flare nut wrench

What kind of lift has two controls, one for air and one for hydraulic pressure?

Fully hydraulic lifts

Regular Socket

General purpose socket for turning nuts & bolts

What kind of screwdriver is pounded with a hammer to loosen a screw?

Impact screwdriver

What are the 2 main categories of lifts?

In-ground Above-ground

Name two metals that do not require a lubricant when they are drilled.

Iron & aluminum

If one of the lift arms can be moved after the vehicle is in the air, what would you do?

Lower the car and reposition the arm.

What is the name of a kind of welding that uses an inert gas shield?

MIG/TIG welding

Technician A says that an arbor press is a type of hydraulic press. Technician B says to use a pipe on the handle of a vise to increase clamping force. Who is right?

Neither A nor B

Technician A says that when using an impact wrench to remove a bolt from the front of an engine's crankshaft, the crankshaft must be held to keep it from turning. Technician B says that when using an impact wrench to remove lug nuts on a raised vehicle, the brakes must be applied. Who is right?

Neither A nor B

Two technicians are discussing hand tool use. Technician A says that a 6-point wrench is easier to use in tight places than a 12-point. Technician B says that a ratchet is used to loosen fasteners that are very tight. Who is right?

Neither A nor B

When installing an oil filter, its _________ must be coated with oil.

O-ring

What causes oil oxidation?

Oil's reaction with oxygen as a result of high engine temperatures

What type of welding would you use for cutting or heating, oxyacetylene or arc?

Oxyacetylene welding

What is the name of the part of the oil additive that swells, causing the oil to maintain its viscosity as it heats up?

Polymers

Which of the following oils has the highest viscosity at engine operating temperature? a. SAE 10W-40 b. SAE 30 c. SAE 20W-50 d. SAE 20W-20

SAE 20W-50

The most recent API service classification for gasoline automotive engine oil is: a. SA b. SM c. CE d. None of the above

SM

What is the name of the type of puller that uses a heavy weight that is slid against its handle?

Slide hammer

What does SAE stand for?

Society of Automotive Engineers

What kind of handle is used for quickness and avoiding cross threading when assembling parts?

Speed handle

What is another name for a very short screwdriver?

Stubby screwdriver

What kind of lift would you want to install if you were renting a building and had a short-term lease, in-ground or surface mount?

Surface-mounted lift

Technician A says that on rear-wheel-drive cars, the center of gravity is usually just below the driver's seat. Technician B says that on front-wheel-drive cars, the center of gravity is usually just below the driver's seat. Who is right?

Technician A

Technician A says that the type of oil filtering system used on modern cars is called a full-flow system. Technician B says that the type of filter that filters out sludge and very small particles in engine oil is called a full-flow filter. Who is right?

Technician A

Technician A says that when removing an oil filter, position the oil filter wrench at the inner end of the filter. Technician B says that when loosening an oil pan drain plug, turn it clockwise. Who is right?

Technician A

Technician A says that it is possible to increase pressure by hydraulic means when a large piston is used to move a smaller one. Technician B says that if a force of 10 pounds acts on a 2-square-inch area, hydraulic fluid pressure of 5 psi is produced. Who is right?

Technician B

When metal being ground is not quenched and is allowed to cool slowly, what happens to it?

The metal will be softened.

Breaker Bar

The most powerful and strongest socket handle. It should be used when breaking loose large or extremely tight bolts and nuts.

When figuring the amount of oil to add to the crankcase, add the amount specified plus some extra to compensate for what?

The oil filter

Which radiator hose is most likely to suffer heat damage, the top or bottom?

The top

Which of the following is not a reason for changing engine oil? a. To remove small particles from the oil b. To remove sludge from the oil c. To replenish additives that have been depleted d. To replace worn-out oil with new oil

To replace worn-out oil with new oil

What kind of jack is used to raise the wheels off a wheel-contact lift?

Wheel-free jack

When would a two-stage air compressor be used?

When pressures above 100 psi are required.

Socket Adapter

a connector for joining parts or devices having different sizes, designs, etc., enabling them to be fitted or to work together.

Drill Press

a machine tool for drilling holes, set on a fixed stand.

Diagonal Cutter

a type of pliers w/ cutting edges diagonally offset about 15º - used for cutting wires that cannot be reached w/ larger tools

Jaw caps or soft jaws are used when clamping a part in a _________ _______ to avoid marring the work surface.

bench vise

Always use the correct filter because some filters have a ___________ valve and others do not have this valve.

by-pass

Which type of oil filter is becoming more common on newer vehicles, spin-on or cartridge?

cartridge

To give a dead blow (one that does not bounce), a soft-faced hammer will have metal shot in its _________.

cavity

A battery ____________ can be used to assist the battery in starting the car.

charger

After changing the oil and filter on a vehicle, run the engine and check for leaks. Then shut off the engine and check the oil level on the ______________.

crankcase

Chisel

cutting metal

Always use the correct filter because some filters have an anti-_______________ valve, while others do not.

drainback

When mounting an engine on an engine stand, the mounting head adapter should be attached to the engine before placing it on the _________ _________.

engine stand

Hydraulic Press

for pressing wrist pins in & out of connecting rods, pistons, etc.

An extra fulcrum provides some types of pliers or cutters with extra _________.

force

Ratchet

has teeth inside its head allowing for a small amount of movement

Jack Stand

holds a vehicle after it is raised

Which way does the oil flow through the filter element?

outside to inside

Two ways that a surface-mounted lift is driven are with a hydraulic pump and cylinders and _________ drive.

screw

Hacksaw

type of handsaw that's used to cut metal

Hydraulic Floor Service Jack

used to raise & lower vehicle off of floor