Chapter 2 Summary

Question 1

Common Wrenches include box-end, open end,, combination, tubing, adjustable, Allen, socket and torque wrenches

Question 2

Pliers are used for gripping, bending, pulling, or cutting. They should never be used for tightening purposes.

Question 3

Several types of screwdrivers are also required for small engine work, including the straight blade screwdriver, and the offset screwdriver

Question 4

Hammers are used for tapping things into place. Hard faced hammers have a head that is made of steel. The head on soft- faced hammers is made of lead., copper, brass, leather, wood, or plastic. Soft- faced hammers are used o parts that would be easily damaged by a hard-faced hammer.

Question 5

Punches are used to make depressions in metal surfaces before drilling, to drive pins from holes, and to align holes in mating parts.

Question 6

Seal drivers are used to drive seals squarely into their bores without damaging them.

Question 7

Hacksaws are used to cut through metal.

Question 8

Reamers are used to enlarge and smooth bores.

Question 9

Files are used to shave small amounts of metal from a surface.

Question 10

Cold chisels are used to shear bolts, pins, rivets, sheet metal, and other materials.

Question 11

Probe and pickup tools assist when small items are dropped into areas that cannot be reached with hands and fingers.

Question 12

A machinist’s vise is useful for holding parts while they are being worked on. Sheet copper aluminum, or wood can be used to pad the vise jaws when working on parts that must not be scratched.

Question 13

Technicians must also use many specialized engibe tools when rebuilding and servicing engines. Common engine tools include gear pullers, flywheel holders, ridge reamers, ring spreaders, ring compressors, glaze breakers, cylinder hones, valve spring compressors, lapping sticks, tachometers, spark testers, and compression testers.

Question 14

Electric drills are handheld tools used to bore holes in materials. Specialized bits and accessories can be installed in electric drills, so they can be used to perform cleaning, sanding, or grinding functions.

Question 15

Drill presses are stationary machines used to bore holes. They are larger and more powerful than handheld drills

Question 16

Bench grinders are stationary machines that can be equipped with abrasive wheels for grinding operations. wire brushes for cleaning operations, or buffing wheels for polishing.

Question 17

Scrapers are thin blades used to remove old gasket material, carbon buildup, or grime. Plastic or brass scraper blades should be used to clean critical or soft metal parts.

Question 18

Wire brushes are used to remove oxidation or carbon buildup from metal parts.

Question 19

Wooden or plastic toothpicks can be used to clean small passages, like those in carburetors.

Question 20

A Cleaning tank is often used to clean small engine parts.

Question 21

A micrometer is a precision instrument used to measure crankshafts, pistons, and other components. A standard micrometer measures to three decimal places. A metric micrometer measures to the hundredths of a millimeter. Vernier micrometers can be used to obtain readings to four decimal places.

Question 22

A vernier caliper is another precision measuring instrument. Vernier calipers are available to measure in either standard or metric units. A vernier caliper can be used to take both internal and external measurements.

Question 23

Telescoping gauges are used to transfer dimensions to an outside micrometer. A small hole gauge is used to measure holes that are too small for the telescoping gauge.

Question 24

Thickness guages, often called feeler gauges, can be leaf-type or wire-type. They are used to measure small spaces and gaps between surfaces.

Question 25

A dial indicator is used to measure the movement of various parts. Many holding devices are available to hold the indicator in the desired location.

Question 26

A screw pitch gauge is used to determine the number of threads on a screw, bolt, or nut. Screw pitch gauges are available for both standard and metric threads.

Question 27

What type of wrench is open on one end and boxed on the other?

Answer 27

D) Combination wrench.

Question 28

Which type of wrench should be used only as a last resort if others are not available?

Answer 28

C.) Adjustable

Question 29

Which wrench would be the best choice for loosening a hex- head bolt in a counterbore?

Answer 29

D.) Socket wrench

Question 30

A torque wrench is used to measure the turning force applied to a threaded fastener.

Answer 30

True

Question 31

Which of the following is a true statement regarding retaining ring pliers?

Answer 31

D.) Retaining ring pliers are commonly used to remove piston rings.

Question 32

To locate a position to be drilled, a hammer and a _____________ should be used.

Answer 32

A.) Center punch

Question 33

When using punches and cold chisels, it is very important to make sure the hammered end is not:

Answer 33

C.) Flared

Question 34

What is the purpose purpose of a ring compressor?

Answer 34

C.) It compresses piston rings so the piston can be installed in the cylinder.

Question 35

A[ ] usually consists of a rigid shaft, to which two or three replaceable flat cutting stones are attached

Answer 35

D: Cylinder hone

Question 36

Should Small drill bits or pieces of wire be used to clean small passages in carburetors?

Answer 36

False

Question 37

Each space on the thimble of a standard micrometer represents

Answer 37

.001”

Question 38

Each space on the sleeve of a standard micrometer represents what part of an inch?

Answer 38

D: .025”

Question 39

The discrimination of a Vernier micrometer is:

Answer 39

A: .01”

Question 40

A telescoping gauge is used for measuring

Answer 40

A: Inside diameters

Question 41

A telescoping gauge is used to:

Answer 41

B: Transfer inside dimension to an outside micrometer

Question 42

An instrument called a [ ] is used to determine the number of threads per inch on bolts or nuts

Answer 42

C: A screw pitch gauge

Question 43

Which measuring instrument is similar to a telescoping gauge?

Answer 43

B: Small hole gauge

Question 44

Dial indicators measure:

Answer 44

D: All of the above

(A:Surface irregularities, B:Linear movement, C: Runout)

Question 45

Which of the following statements regarding micrometers is not true?

Answer 45

C: Micrometers should be gripped tightly to ensure an accurate reading

Question 46

Combination squares can be used to check the straightness and length of valve springs?

Answer 46

True

Question 47

List 2 common types of engine test instruments:

Answer 47

Tachometers
Spark testers
Crompression tester

Question 48

List five common engine tools

Answer 48

Wrenches, pliers, punches, chisels, and screwdrivers

Question 49

Name three types of measuring instruments used to determine if engine parts are within manufacturers tolerance.

Answer 49

(?)Micrometers, Callipers and gauges

Question 50

In your own words Explain the phrase “ Use the right tool for the right job”

Question 51

Micrometers, calipers, thicness gauges and dial indicators are precision measuring instruments. However, they may not always produce accurate measurements.
Explain the difference between accuracy and precision, and describe ways that you can ensure your measurements are both accurate and precise: