Question 1

Explain how the stones on a spring-loaded glaze breaker can be accidentally broken.

Accepted Answer

The stones on a spring-loaded glaze breaker can be accidentally broken in two ways:
1. This happens when the tool is removed from the cylinder while the drill motor is still spinning.
2. Stones also break when they are allowed to spin below the bottom of the cylinder bore and come into contact with main bearing webs.

Question 2

Uneven rod bearing wear, and sometimes piston skirt wear, usually indicates a(n) ____.

Accepted Answer

A) tapered bearing journal 
B) valve clearance 
C) interference 
D) undersized crank 
A) tapered bearing journal 
B) valve clearance 
C) interference 
D) undersized crank A

Question 3

The part that will MOST-Likely be easily bruised or distorted during installation of pressed-fit oil pickup screens is the:

Accepted Answer

A) pump housing 
B) O-ring seal 
C) crosshatch 
D) socket adapter 
A) pump housing 
B) O-ring seal 
C) crosshatch 
D) socket adapter A

Question 4

Cylinders become glazed where the piston rings contact the cylinder wall.

Accepted Answer

A) True 
 B)False

Question 5

____________________ after boring provides a much more satisfactory surface for new rings and promotes longer ring life.

Accepted Answer

The answer of ____________________ after boring provides a much more...

Question 6

____________________ occurs when excessive piston-to-cylinder wall clearance allows the piston skirt to tap against the cylinder wall.

Accepted Answer

The answer of ____________________ occurs when excessive piston-to-cylinder wall clearance...

Question 7

The crankshaft can be checked for obvious cracks by "____________________" the counterweights with a light tap of a hammer.

Accepted Answer

The answer of The crankshaft can be checked for obvious...

Question 8

What is the purpose of the crosshatch?

Accepted Answer

The purpose of the c

Question 9

All of the following statements are true EXCEPT:

Accepted Answer

A) cylinders are deglazed for use with new rings only if they have excessive bore taper. 
B) damaged cylinders or cylinders with too much taper should be rebored and honed by a machine shop to fit new oversized pistons. 
C) the top of an oversize piston is stamped with the amount of oversize. 
D) pistons of 0.030" oversize are most commonly used. 
A) cylinders are deglazed for use with new rings only if they have excessive bore taper. 
B) damaged cylinders or cylinders with too much taper should be rebored and honed by a machine shop to fit new oversized pistons. 
C) the top of an oversize piston is stamped with the amount of oversize. 
D) pistons of 0.030" oversize are most commonly used.

Question 10

Glaze breakers remove metal at a much faster rate than the rigid hones that are used to finish a cylinder to the correct size after boring.

Accepted Answer

A) True 
 B)False

Question 11

Why is it not advisable to sand bearings with an emery cloth?

Accepted Answer

Do not sand bearings with emer

Question 12

The tool that is MOST-Likely used to regrind a crankshaft is the:

Accepted Answer

A) stress raiser 
B) crosshatch 
C) gasket 
D) crankshaft grinder 
A) stress raiser 
B) crosshatch 
C) gasket 
D) crankshaft grinder

Question 13

While having a discussion, Technician A says that a front bearing with excessive clearance will knock. Technician B says that excessive clearance can cause low oil pressure. Who is correct?

Accepted Answer

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

Question 14

It is more difficult for new rings to seal against an out-of-round cylinder than a tapered one.

Accepted Answer

A) True 
 B)False

Question 15

____________________ are used to repair a cracked or damaged cylinder.

Accepted Answer

The answer of ____________________ are used to repair a cracked...

Question 16

While having a discussion, Technician A says that a plugged screen can ruin a new engine in a very short time. Technician B says that a plugged screen has no effect on the engine. Who is correct?

Accepted Answer

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

Question 17

Too much taper wear is also accompanied by out-of-round (oval) wear, which results when the piston rocks on its wrist pin at top dead center and bottom dead center.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following will LEAST-Likely be used to measure the cylinder bore?

Accepted Answer

A) Telescoping gauge and micrometer 
B) Inside micrometer 
C) Torque gauge 
D) Cylinder dial bore gauge 
A) Telescoping gauge and micrometer 
B) Inside micrometer 
C) Torque gauge 
D) Cylinder dial bore gauge

Question 19

A crankshaft sometimes wears excessively because of abrasives in the ____________________.

Accepted Answer

The answer of A crankshaft sometimes wears excessively because of...

Question 20

Which of the following statements is LEAST-Likely true?

Accepted Answer

A) Block castings can be distorted when heads and main cap bolts are torqued. 
B) A boring stand is desirable for reboring and honing blocks. 
C) Cylinders can be up to 0.012" out-of-round when the block is hung from one end on a conventional universal engine stand. 
D) Boring cylinders with a portable boring bar while the block is mounted to one of these stands can produce oval-shaped cylinders. 
A) Block castings can be distorted when heads and main cap bolts are torqued. 
B) A boring stand is desirable for reboring and honing blocks. 
C) Cylinders can be up to 0.012" out-of-round when the block is hung from one end on a conventional universal engine stand. 
D) Boring cylinders with a portable boring bar while the block is mounted to one of these stands can produce oval-shaped cylinders.

Exam 53: Engine Diagnosis and Service: Block, Crankshaft, Bearings, and Lubrication System

Explain how the stones on a spring-loaded glaze breaker can be accidentally broken.

Uneven rod bearing wear, and sometimes piston skirt wear, usually indicates a(n) ____.

The part that will MOST-Likely be easily bruised or distorted during installation of pressed-fit oil pickup screens is the:

Cylinders become glazed where the piston rings contact the cylinder wall.

____________________ after boring provides a much more satisfactory surface for new rings and promotes longer ring life.

____________________ occurs when excessive piston-to-cylinder wall clearance allows the piston skirt to tap against the cylinder wall.

The crankshaft can be checked for obvious cracks by "____________________" the counterweights with a light tap of a hammer.

What is the purpose of the crosshatch?

All of the following statements are true EXCEPT:

Glaze breakers remove metal at a much faster rate than the rigid hones that are used to finish a cylinder to the correct size after boring.

Why is it not advisable to sand bearings with an emery cloth?

The tool that is MOST-Likely used to regrind a crankshaft is the:

While having a discussion, Technician A says that a front bearing with excessive clearance will knock. Technician B says that excessive clearance can cause low oil pressure. Who is correct?

It is more difficult for new rings to seal against an out-of-round cylinder than a tapered one.

____________________ are used to repair a cracked or damaged cylinder.

While having a discussion, Technician A says that a plugged screen can ruin a new engine in a very short time. Technician B says that a plugged screen has no effect on the engine. Who is correct?

Too much taper wear is also accompanied by out-of-round (oval) wear, which results when the piston rocks on its wrist pin at top dead center and bottom dead center.

Which of the following will LEAST-Likely be used to measure the cylinder bore?

A crankshaft sometimes wears excessively because of abrasives in the ____________________.

Which of the following statements is LEAST-Likely true?

Introduction to the Automobile

Automotive Careers and Technician Certification

Shop Safety

Shop Management, Service Records, and Parts

Locating Service Information and Specifications

Measuring Tools and Systems

Hardware, Fasteners, Drills, and Thread Repair

Shop Tools

General Shop Equipment

Cleaning Equipment and Methods

Lifting Equipment and Air Compressors

Engine Lubrication

Underhood and Body Inspection Vehicle on Ground

Undercar Inspection and Service

Introduction to the Engine

Engine Classifications and Types

Engine Size and Measurements

Engine Upper End

Engine Lower End and Lubrication System Theory

Cooling System Theory

Cooling System Service

Automotive Belts

Automotive Hoses

Automotive Plumbing: Tubing and Pipe

Basic Electrical System Theory and Repairs

Battery Fundamentals

Battery Service

Starting System Fundamentals

Starting System Service

Charging System Fundamentals

Charging System Service

Lighting and Wiring Fundamentals

Lighting and Wiring Service

Safety, Security, Comfort Systems, and Electrical Accessories

Heating and Air-Conditioning Fundamentals

Heating and Air-Conditioning Service

Ignition System Fundamentals

Ignition System Service

Petroleum Fuels and Alternative Fuel Technologies

Fuel System Fundamentals, Gasoline and Diesel

Fuel System Service

Intake and Exhaust Systemsturbochargers and Superchargers

Emission Control System Fundamentals, Gasoline and Diesel

Emission Control System Service

Electronics and Computer Systems Fundamentals

Electronics and Computer Systems Service

Advanced Emission and On-Board Diagnostics Obd

Diagnosing Engine Performance Problems

Diagnosing Engine Mechanical Problems

Engine Removal and Disassembly

Engine Sealing Gaskets, Fastener Torque

Engine Diagnosis and Service: Cylinder Head and Valve Train

Engine Diagnosis and Service: Piston, Piston Rings, Connecting Rod, Engine Balancing

Ordering Parts, Short and Long Blocks, Engine Assembly

Engine Installation, Break-In, and In-Chassis Repairs

Brake Fundamentals

Brake Service

Antilock Brakes, Traction, and Stability Control

Bearings, Seals, and Greases