Question 1

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

Accepted Answer

Both technicians are correct in their methods of marking and indexing parts. Technician A is marking the position of the driveshaft components to make sure they are reassembled in the correct orientation. Technician B is marking suspension and steering parts to ensure that wheel alignment is as close as possible after reassembly. Both of these methods are common practices in automotive repair and are important for ensuring proper reassembly and operation of the vehicle.

Question 2

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

Accepted Answer

The answer of The first step in disassembly of an...

Question 3

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

Accepted Answer

The answer of A ____________________ hammer is used to drive...

Question 4

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

Accepted Answer

It is important to disconnect the wiring before removing the starter to avoid any potential damage or injury. Letting the starter hang by the wiring as described by Technician B can cause damage to the wiring and potentially lead to a safety hazard.

Question 5

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

Accepted Answer

Technician A is correct in keeping all rocker arms and pushrods in order to ensure proper reassembly. Technician B is incorrect in loosening the head bolts in random order, as this can cause damage to the cylinder head and engine block. The head bolts should be loosened in a specific sequence to avoid warping or cracking the cylinder head.

Question 6

Caustic soda should never be used to clean parts made of _____.
A) aluminum
B) steel
C) iron
D) brass

Accepted Answer

Caustic soda (sodium hydroxide) is highly reactive with aluminum, causing corrosion and damage to aluminum parts. It should not be used for cleaning aluminum surfaces.

Question 7

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

Accepted Answer

Technician A is correct because cleaning the engine and engine compartment before beginning to remove the engine helps to prevent dirt and debris from falling into the engine components during removal. Technician B is correct because draining all engine fluids before engine removal helps to prevent spills and contamination of the work area. Therefore, both technicians are correct.

Question 8

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

Accepted Answer

Both technicians are correct in their methods of removing the drive axles. Technician A's method allows for the axles to remain attached to the wheel hubs, which can make removal and reinstallation easier. Technician B's method is also valid and commonly used, as removing the lower ball joint can provide easier access to the drive axle. Therefore, both methods are acceptable and effective for removing drive axles from a vehicle.

Question 9

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

Accepted Answer

The answer of Extreme care should be used when using...

Question 10

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

Accepted Answer

The answer of When attaching a lifting eye to an...

Question 11

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

Accepted Answer

Both techniques, washing parts and shot blasting, are valid methods for removing ash from parts after they have been cleaned in a thermal cleaning oven.

Question 12

Citrus chemicals _____.
A) are less hazardous
B) smell good
C) are easier to dispose of
D) all answers are correct

Accepted Answer

The answer of Citrus chemicals _____.
A) are less hazardous
B) smell...

Question 13

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

Accepted Answer

The answer of Install a ____________________ before you disconnect the...

Question 14

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

Accepted Answer

Both technicians are correct. Excessive buildup of sludge in the engine is often caused by not changing the oil on a proper schedule. A buildup of scale, which is a type of mineral deposit, can cause blockage in the cooling system, leading to overheating and other issues.

Question 15

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

Accepted Answer

The answer of While discussing abrasive cleaners, Technician A says...

Question 16

Which of the following is NOT used in a dye penetrant crack detection?
A) penetrant
B) cleaner
C) developer
D) electromagnet

Accepted Answer

An electromagnet is not used in a dye penetrant crack detection process. Penetrant, cleaner, and developer are all essential components of the process.

Question 17

Technician A says in certain vehicles the engine and transmission must be removed together as a unit. Technician B 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 . Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Accepted Answer

In some vehicles, especially those with tight engine compartments, the engine and transmission are designed to be removed together as a unit. Technician B is incorrect because FWD cars often have complex assemblies that need to be removed, making engine removal potentially more challenging than in RWD cars.

Question 18

While discussing cleaning engine parts: Technician A says that the cleaning method used depends on the component to be cleaned and the type of cleaning equipment available. Technician B says a parts tumbler is good for cleaning aluminum components such as intake manifolds and cylinder heads. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of While discussing cleaning engine parts: Technician A...

Question 19

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 on reassembly. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Accepted Answer

Technician A is correct because labeling electrical connectors and vacuum lines helps ensure proper reassembly. Technician B's method of putting all fasteners into a single container can lead to confusion and errors during reassembly.

Question 20

Which type of soil is not water soluble?
A) dirt
B) dust
C) mud
D) carbon

Accepted Answer

Carbon is a solid element and is not water soluble, unlike dirt, dust, and mud which are all composed of various minerals and organic matter that can dissolve in water to some extent.

Quiz 10: Engine Disassembly and Cleaning

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?

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

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

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?

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?

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

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?

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

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?

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?

Citrus chemicals _____.

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

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?

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?

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

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 on reassembly. Who is correct?

Which type of soil is not water soluble?