Question 1

Power steering systems usually have two hoses: one for pressure and the other for return. Discuss the differences between the two.

Accepted Answer

The return hose is not under pressure like the high-pressure hose. The pressure hose is made of reinforced, oil-resistant synthetic rubber, crimped to metal tubing. It must withstand temperatures of 300⁰F and handle pressures up to 1,500 psi. Some pressure hoses also have a flow reducer-an orifice that controls oil flow. The return hose usually connects to the power steering pump with a hose clamp. It operates under low pressure but must be able to withstand high temperatures and resist damage from power steering fluid.

Question 2

The middle fabric layers of most brake hoses have three plies with a jacket on the outside layer to protect the plies.

Accepted Answer

A) True 
 B)False  False

Question 3

All of the following statements are true EXCEPT:

Accepted Answer

A)  a replacement hose to a power booster must be reinforced and fuel resistant. 
B)  fuel vapors can damage a power booster diaphragm. 
C)  some hoses have an inline filter that prevents fuel from entering the power booster during a misfire in the intake manifold. 
D)  because safety is involved, federal motor vehicle standards require brake hoses to have a burst strength of at least 3,000 psi. 
A)  a replacement hose to a power booster must be reinforced and fuel resistant. 
B)  fuel vapors can damage a power booster diaphragm. 
C)  some hoses have an inline filter that prevents fuel from entering the power booster during a misfire in the intake manifold. 
D)  because safety is involved, federal motor vehicle standards require brake hoses to have a burst strength of at least 3,000 psi. D

Question 4

What is the process involved in replacing a coolant hose?

Accepted Answer

When a coolant hose is to be replaced, f

Question 5

Technician A says that when a compression fitting with a copper washer has been tightened, the hose can no longer rotate. Technician B says that the compression fitting must be installed before the other end of the hose is installed. 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 6

A(n) ____________________ crimp was used with 3-barbed fittings on vintage R-12 refrigeration systems.

Accepted Answer

The answer of A(n) ____________________ crimp was used with 3-barbed...

Question 7

The hose that is MOST-Likely to have the inside be resistant to damage from ethanol and methanol fuels is the:

Accepted Answer

A)  fuel hose 
B)  universal hose 
C)  by-pass hose 
D)  formable hose 
A)  fuel hose 
B)  universal hose 
C)  by-pass hose 
D)  formable hose

Question 8

Over 90% of replacement radiator hoses are molded hoses.

Accepted Answer

A) True 
 B)False

Question 9

The MOST-Likely hose to have a metal wire molded within is the:

Accepted Answer

A)  universal hose 
B)  fuel hose 
C)  by-pass hose 
D)  formable hose 
A)  universal hose 
B)  fuel hose 
C)  by-pass hose 
D)  formable hose

Question 10

____________________ is a process that cures rubber and causes it to set in a predetermined shape.

Accepted Answer

The answer of ____________________ is a process that cures rubber...

Question 11

Which of the following statements is LEAST-Likely true?

Accepted Answer

A)  Fuel hose must always be routed so that it is at least 4" (100 mm) away from any part of the exhaust system. 
B)  Fuel injection lines do not maintain pressure when the engine is off. 
C)  Catalytic converters run hotter than the rest of the exhaust system. 
D)  Fuel hoses should not be any closer than 10" (284 mm) from a catalytic converter. 
A)  Fuel hose must always be routed so that it is at least 4" (100 mm) away from any part of the exhaust system. 
B)  Fuel injection lines do not maintain pressure when the engine is off. 
C)  Catalytic converters run hotter than the rest of the exhaust system. 
D)  Fuel hoses should not be any closer than 10" (284 mm) from a catalytic converter.

Question 12

Reinforced rubber is used for vacuum hose, windshield washer hose, and drain hose.

Accepted Answer

A) True 
 B)False

Question 13

How would you check for ECD damage?

Accepted Answer

To check for ECD damage, squeeze the hos

Question 14

What factors should you bear in mind when installing a new section of hose?

Accepted Answer

When installing the new section of hose,

Question 15

____ used as original equipment by some manufacturers for cooling system hoses are not used for most fuel system applications, although they are supplied with replacement in-line fuel filters on older engines with carburetors.

Accepted Answer

A)  Screw tower clamps 
B)  Spring clamps 
C)  Hoses 
D)  Gears 
A)  Screw tower clamps 
B)  Spring clamps 
C)  Hoses 
D)  Gears

Question 16

Which of the following is the LEAST-Likely place to find a hose?

Accepted Answer

A)  Radiator 
B)  Heater 
C)  Brake system 
D)  Circuit 
A)  Radiator 
B)  Heater 
C)  Brake system 
D)  Circuit

Question 17

Bending conventional hose will cause it to kink, restricting water flow.

Accepted Answer

A) True 
 B)False

Question 18

Radiator hoses are designed to have a burst strength of between five and six times the working pressure of the cooling system.

Accepted Answer

A) True 
 B)False

Question 19

For safety reasons, fuel hose must be tough enough to resist ____ in case it rubs or chafes against another part.

Accepted Answer

A)  abrasion 
B)  radiation 
C)  compression 
D)  vulcanizing 
A)  abrasion 
B)  radiation 
C)  compression 
D)  vulcanizing

Question 20

The rubber outside layer of brake hose can crack from ____________________ in the air.

Accepted Answer

The answer of The rubber outside layer of brake hose...

Exam 23: Automotive Hoses

Power steering systems usually have two hoses: one for pressure and the other for return. Discuss the differences between the two.

The middle fabric layers of most brake hoses have three plies with a jacket on the outside layer to protect the plies.

All of the following statements are true EXCEPT:

What is the process involved in replacing a coolant hose?

Technician A says that when a compression fitting with a copper washer has been tightened, the hose can no longer rotate. Technician B says that the compression fitting must be installed before the other end of the hose is installed. Who is correct?

A(n) ____________________ crimp was used with 3-barbed fittings on vintage R-12 refrigeration systems.

The hose that is MOST-Likely to have the inside be resistant to damage from ethanol and methanol fuels is the:

Over 90% of replacement radiator hoses are molded hoses.

The MOST-Likely hose to have a metal wire molded within is the:

____________________ is a process that cures rubber and causes it to set in a predetermined shape.

Which of the following statements is LEAST-Likely true?

Reinforced rubber is used for vacuum hose, windshield washer hose, and drain hose.

How would you check for ECD damage?

What factors should you bear in mind when installing a new section of hose?

____ used as original equipment by some manufacturers for cooling system hoses are not used for most fuel system applications, although they are supplied with replacement in-line fuel filters on older engines with carburetors.

Which of the following is the LEAST-Likely place to find a hose?

Bending conventional hose will cause it to kink, restricting water flow.

Radiator hoses are designed to have a burst strength of between five and six times the working pressure of the cooling system.

For safety reasons, fuel hose must be tough enough to resist ____ in case it rubs or chafes against another part.

The rubber outside layer of brake hose can crack from ____________________ in the air.

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 Car on Ground

Undercar Inspection and Service

Introduction to the Engine

Engine Classifications and Advanced Transportation Technologies

Engine Size and Measurements

Engine Upper End

Engine Lower End and Lubrication System Theory

Cooling System Theory

Cooling System Service

Automotive Belts

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

Fuels and Alternative Fuels

Fuel System Fundamentals

Fuel System Service

Intake and Exhaust Systems, Turbochargers and Superchargers

Emission Control System Fundamentals

Emission Control System Service

Electronics and Computer Systems Fundamentals

Electronics and Computer Systems Service

Advanced Emissions and On-Board Diagnostics Odb

Diagnosing Engine Performance Problems

Diagnosing Engine Mechanical Problems

Engine Removal and Disassembly

Engine Sealing, Gaskets, Fastener Torque

Engine Diagnosis and Service: Cylinder Head and Valvetrain

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

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

Brakes Service

Anti-Lock Brakes Traction and Stability Control

Bearings, Seals, and Greases