Deck 10: Engine Disassembly and Cleaning

Question 1

Which of the following solvents have associated health risks?

A)chlorinated hydrocarbons
B)mineral spirits
C)caustic soda
D)All the answers are correct.

Answer 1

D

Question 2

Parts must be _____ when they go into an abrasive blast machine.

A)grease free
B)d ry
C)both A and B
D)neither A nor B

Answer 2

C

Question 3

Some engine repairs can be done while the engine is still in the vehicle.

Answer 3

True

Question 4

In addition to metal destruction, rust acts to insulate and prevent proper heat transfer inside the cooling system.

Question 5

Sludge and metal shavings inside the pan are normal and can be disregarded.

Question 6

A major advantage of cleaning ovens is that they are a more environmentally acceptable process than chemical cleaning.

Question 7

Technician A disconnects the positive battery cable before removing the engine from the vehicle. Technician B disconnects the negative battery cable. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 8

To prevent cylinder head warpage during disassembly, the head bolts should be removed randomly.

Question 9

Which one of these statements is NOT true?

A)If cracks in a metal casting are found during an inspection, they should be repaired or the part replaced.
B)Stress or strain on a weak point of a casting causes it to distort at that point.
C)Immediately following crack repair by welding, it is important to flush the part with cold water.
D)Cracks in metal castings are the result of stress or strain on a section of the casting.

Question 10

The buildup of mineral and deposits inside the cooling system is called ______.

A)organic soil
B)scale
C)rust
D)grime

Question 11

Engines for FWD vehicles are often removed from the bottom.

Question 12

Water-soluble soils contain petroleum by-products derived from crude oil including tar, road oil, engine oil, gasoline, diesel fuel, grease, and engine oil additives.

Question 13

It is a good policy to discard all engine gaskets immediately so that they do not mistakenly get reused.

Question 14

An interference engine has enough clearance between the pistons and valves so that it will not bend the valves if the timing belt breaks, slips, or skips.

Question 15

A buildup of sludge in the rocker area indicates a poor maintenance schedule and is a signal to look for wear on other components.

Question 16

Which cleaning method uses high-frequency sound waves to  loosen dirt from parts?

A)ultrasonic
B)salt bath
C)thermal
D)caustic

Question 17

Technician A rotates the engine by hand until all the cam timing marks align to ensure that the cam timing was set properly. Technician B moves the belt tensioner pulley to remove its tension on the belt before removing the timing belt. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 18

Technician A unbolts the A/C compressor from its bracket and repositions it so that the engine can be removed without disconnecting the A/C hoses. Technician B captures the refrigerant using a reclaimer/recycling machine before removing A/C hoses from the compressor, then plugs the lines and connections at the compressor. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 19

On an OHC engine, the _____ must be removed before the cylinder head(s)is removed:

A)water pump
B)camshafts
C)timing belt/chain
D)All the answers are correct.

Question 20

When removing an engine on a FWD vehicle, the steering gear may have to be disconnected from the frame.

Question 21

The flywheel bolts should be loosened in a ____________________ pattern.

Question 22

Install a ____________________ before you disconnect the battery to prevent the vehicle's computer and other devices from losing information they have stored in their memory.

Question 23

While discussing cleaning engine parts, Technician A says a parts tumbler is good for cleaning aluminum components such as intake manifolds and cylinder heads. Technician B says that the cleaning method used depends on the component to be cleaned and the type of cleaning equipment available. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 24

Technician A washes parts to remove the ash from them after they have been cleaned in a thermal cleaning oven. Technician B uses shot blasting to remove the ash from parts after they have been cleaned in a thermal cleaning oven. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 25

Technician A says that compared to RWD cars, engines in FWD cars are easier to remove because they don't have large assemblies such as engine cradles, suspension components, brake components, splash shields, or other pieces that need to be disassembled or removed. Technician B says in certain vehicles the engine and transmission must be removed together as a unit. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 26

While removing a cylinder head, Technician A keeps all rocker arms and pushrods in order. Technician B loosens the head bolts in random order. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 27

Which type of soil is not water soluble?

A)dirt
B)dust
C)mud
D)carbon

Question 28

Technician A uses a chalk mark to index the position of the rear U-joint and pinion flange. Technician B, when removing drive axles, scribes marks on the suspension and steering parts to ensure that the wheel alignment will be close after reassembly. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 29

Technician A leaves the drive axles attached to the wheel hubs, disconnects the inboard CV joints at the axle flange, then positions the axles so that they don't interfere with engine/transaxle removal. Technician B separates the lower ball joint from the steering knuckle then removes the drive axle from the vehicle. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 30

While discussing abrasive cleaners, Technician A says shot is angular in shape and is used for aggressive cleaning. Technician B says grit is an angular-shaped medium and is used to peen metal surfaces. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 31

Technician A uses masking tape and a marking pen to label electrical connectors and vacuum lines. Technician B puts all the nuts and bolts and other fasteners into a big coffee can and sorts them out during reassembly. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 32

Extreme care should be used when using a scraper or wire brush on parts made of _____.

A)cast iron
B)stainless steel
C)titanium
D)aluminum

Question 33

When attaching a lifting eye to an engine prior to removing the engine with an engine hoist, how far must a 10 mm bolt be threaded into the engine?

A)5 mm
B)10 mm
C)15 mm
D)20 mm

Question 34

Technician A removes the starter wiring and then removes the starter from the vehicle. Technician B unbolts the starter with the wiring attached and lets the starter hang by the wiring. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 35

Technician A says excessive buildup of sludge may indicate a poor oil change schedule. Technician B says a buildup of scale in the engine can cause cooling system blockage. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 36

Which of the following is NOT used in a dye penetrant crack detection?

A)penetrant
B)cleaner
C)developer
D)electromagnet

Question 37

Caustic soda should never be used to clean parts made of _____.

A)aluminum
B)steel
C)iron
D)brass

Question 38

A ____________________ hammer is used to drive the CV joint spline out of the wheel hub.

Question 39

Technician A says it is a good practice to clean the engine and engine compartment before beginning to remove the engine. Technician B says all engine fluids should be drained before engine removal. Who is correct?

A)A only
B)B only
C)both A and B
D)neither A nor B

Question 40

The first step in disassembly of an engine is usually the removal of the ____________________ and ____________________ manifolds.

Question 41

____________________ should be used to prevent damage to body work and painted surfaces around the hood opening.

Question 42

When disassembling an engine, what should you be looking for?

Question 43

Describe a thermal cleaning operation.

Question 44

Parts washers are often called ____________________ tanks.

Question 45

If the transmission is not being removed with the engine, describe the five steps to disconnect an automatic transmission from the engine

Question 46

An engine that has enough clearance between the pistons and valves so that if the timing belt breaks the valves will not is called a(n)____________________ engine.

Question 47

Why would you want to have a digital camera available for an engine R&R job?

Question 48

Caustic soda is a strong detergent that is commonly found in solvent and is effective in removing ____________________.

Question 49

List the procedure for keeping the customer's vehicle clean while the engine is being rebuilt.

Question 50

Describe how a pressure test is done.

Question 51

Identify some personal safety concerns when working with any type of cleaning solvent or chemical.

Question 52

What is the main advantage of thermal cleaning?

Question 53

What is an interference engine?

Question 54

The flywheel for a vehicle with a manual transmission should be examined for damage and signs of ____________________ problems.

Question 55

Identify the adverse effects of aggressive cleaning with grit.

Question 56

Describe how magnet crack detection is done.