Question 1

What is usually used to mount a multi-leaf spring pack to an axle saddle?

Accepted Answer

A)  centerbolt 
B)  spring clips 
C)  spring shackles 
D)  U-bolts 
A)  centerbolt 
B)  spring clips 
C)  spring shackles 
D)  U-bolts D

Question 2

Which of the following are advantages of using fiber-composite leaf springs?

Accepted Answer

A)  reduced unsprung weight 
B)  quieter ride 
C)  less spring sag tendency 
D)  all of the above 
A)  reduced unsprung weight 
B)  quieter ride 
C)  less spring sag tendency 
D)  all of the above D

Question 3

When reinstalling rubber-bushed equalizing beams,what do you have to do before torquing the nuts to specification?

Accepted Answer

A)  install the torque rods 
B)  ensure the equalizing beams are parallel to the frame 
C)  both A and B 
D)  neither A nor B 
A)  install the torque rods 
B)  ensure the equalizing beams are parallel to the frame 
C)  both A and B 
D)  neither A nor B C

Question 4

In a truck front suspension in which the spring is fixed at one end by pin,which of the following components permits variations in spring length as the spring flexes?

Accepted Answer

A)  mainspring eye 
B)  rebound clips 
C)  U-bolts 
D)  spring shackles 
A)  mainspring eye 
B)  rebound clips 
C)  U-bolts 
D)  spring shackles

Question 5

Which of the following suspension system components play a role in positioning an axle?

Accepted Answer

A)  torque rods 
B)  centerbolts 
C)  torque leafs 
D)  all of the above 
A)  torque rods 
B)  centerbolts 
C)  torque leafs 
D)  all of the above

Question 6

What is the most compressed condition of a spring known as?

Accepted Answer

A)  rebound 
B)  jounce 
C)  unsprung 
D)  sprung 
A)  rebound 
B)  jounce 
C)  unsprung 
D)  sprung

Question 7

Which of the following best describes how driving,braking,and cornering forces are transmitted to the frame on a truck is equipped with rubber load cushion-type equalizing beams?

Accepted Answer

A)  transmitted directly through the rubber cushions to the frame brackets 
B)  transmitted through rubber-bushed vertical drive pins in each cushion 
C)  torque rods transmit 100% of these forces 
D)  equalizing beams transmit 100% of these forces 
A)  transmitted directly through the rubber cushions to the frame brackets 
B)  transmitted through rubber-bushed vertical drive pins in each cushion 
C)  torque rods transmit 100% of these forces 
D)  equalizing beams transmit 100% of these forces

Question 8

Technician A says that it is desirable to keep vehicle unsprung weight as heavy as possible because it makes for a more gentle ride.Technician B says that unsprung weight has a reaction effect through the suspension and frame.Who is correct?

Accepted Answer

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

Question 9

What type of forces are easily absorbed by an air spring?

Accepted Answer

A)  longitudinal forces 
B)  vertically applied forces 
C)  transverse forces 
D)  both A and C 
A)  longitudinal forces 
B)  vertically applied forces 
C)  transverse forces 
D)  both A and C

Question 10

Which of the following is NOT an indication of worn-out,front axle shock absorbers?

Accepted Answer

A)  excessive spring oscillations 
B)  reduced suspension height 
C)  front wheel shimmy 
D)  excessive tire wear 
A)  excessive spring oscillations 
B)  reduced suspension height 
C)  front wheel shimmy 
D)  excessive tire wear

Question 11

What is the function of a torque rod used with a equalizer type,multi-leaf spring pack,tandem suspension?

Accepted Answer

A)  controls longitudinal forces 
B)  dampens axle wind-up caused by braking forces 
C)  dampens axle wind-up caused by acceleration forces 
D)  all of the above 
A)  controls longitudinal forces 
B)  dampens axle wind-up caused by braking forces 
C)  dampens axle wind-up caused by acceleration forces 
D)  all of the above

Question 12

Which of the following suspension systems will NOT usually be used as a front axle,truck suspension?

Accepted Answer

A)  equalizing-beam 
B)  camelback 
C)  solid rubber block 
D)  all of the above 
A)  equalizing-beam 
B)  camelback 
C)  solid rubber block 
D)  all of the above

Question 13

If you were to paint the leaf springs when assembling a multi-leaf spring pack,which of the following spring characteristics would be compromised?

Accepted Answer

A)  maximum load rating 
B)  no-load ride 
C)  jounce properties 
D)  inter-leaf friction 
A)  maximum load rating 
B)  no-load ride 
C)  jounce properties 
D)  inter-leaf friction

Question 14

After being subject to jounce,what is a spring likely to do?

Accepted Answer

A)  rebound 
B)  break 
C)  rejounce 
D)  compress 
A)  rebound 
B)  break 
C)  rejounce 
D)  compress

Question 15

Which of the following would best describe a multi-leaf steel spring pack used in a truck or trailer application?

Accepted Answer

A)  diamond-shaped 
B)  semi-elliptical 
C)  cylindrical 
D)  elliptical 
A)  diamond-shaped 
B)  semi-elliptical 
C)  cylindrical 
D)  elliptical

Question 16

What is the reason for coating steel components with a special compound when they contact with an aluminum frame?

Accepted Answer

A)  prevents corrosion 
B)  limits squeaks and rattles 
C)  reduce harshness in the suspension system 
D)  all of the above 
A)  prevents corrosion 
B)  limits squeaks and rattles 
C)  reduce harshness in the suspension system 
D)  all of the above

Question 17

In a reversible sleeve type air spring,what prevents frame-to-piston contact when the air spring is subjected to extreme jounce?

Accepted Answer

A)  air supply port 
B)  shock absorber 
C)  jounce block 
D)  torque rod 
A)  air supply port 
B)  shock absorber 
C)  jounce block 
D)  torque rod

Question 18

Which of the following suspension components is NOT usually found in heavy-duty trucks or trailers today?

Accepted Answer

A)  multi-leaf springs 
B)  coiled springs 
C)  air springs 
D)  equalizing-beam 
A)  multi-leaf springs 
B)  coiled springs 
C)  air springs 
D)  equalizing-beam

Question 19

What is meant by the term adaptive suspension when used in the context of a truck or trailer?

Accepted Answer

A)  adjusts to chassis load conditions automatically 
B)  enables quick suspension component change-outs 
C)  combines steel and air springs 
D)  ride height adapts to actual road speed 
A)  adjusts to chassis load conditions automatically 
B)  enables quick suspension component change-outs 
C)  combines steel and air springs 
D)  ride height adapts to actual road speed

Question 20

While lubricating a rear suspension with an air-actuated grease gun,one spring pin will not take grease.Which of the following should be done first?

Accepted Answer

A)  remove weight from suspension and try with a hand grease gun 
B)  heat the spring with a rosebud 
C)  remove weight from the suspension and hammer on eye while pumping grease 
D)  replace the mainleaf 
A)  remove weight from suspension and try with a hand grease gun 
B)  heat the spring with a rosebud 
C)  remove weight from the suspension and hammer on eye while pumping grease 
D)  replace the mainleaf

Exam 26: Suspension Systems

What is usually used to mount a multi-leaf spring pack to an axle saddle?

Which of the following are advantages of using fiber-composite leaf springs?

When reinstalling rubber-bushed equalizing beams,what do you have to do before torquing the nuts to specification?

In a truck front suspension in which the spring is fixed at one end by pin,which of the following components permits variations in spring length as the spring flexes?

Which of the following suspension system components play a role in positioning an axle?

What is the most compressed condition of a spring known as?

Which of the following best describes how driving,braking,and cornering forces are transmitted to the frame on a truck is equipped with rubber load cushion-type equalizing beams?

Technician A says that it is desirable to keep vehicle unsprung weight as heavy as possible because it makes for a more gentle ride.Technician B says that unsprung weight has a reaction effect through the suspension and frame.Who is correct?

What type of forces are easily absorbed by an air spring?

Which of the following is NOT an indication of worn-out,front axle shock absorbers?

What is the function of a torque rod used with a equalizer type,multi-leaf spring pack,tandem suspension?

Which of the following suspension systems will NOT usually be used as a front axle,truck suspension?

If you were to paint the leaf springs when assembling a multi-leaf spring pack,which of the following spring characteristics would be compromised?

After being subject to jounce,what is a spring likely to do?

Which of the following would best describe a multi-leaf steel spring pack used in a truck or trailer application?

What is the reason for coating steel components with a special compound when they contact with an aluminum frame?

In a reversible sleeve type air spring,what prevents frame-to-piston contact when the air spring is subjected to extreme jounce?

Which of the following suspension components is NOT usually found in heavy-duty trucks or trailers today?

What is meant by the term adaptive suspension when used in the context of a truck or trailer?

While lubricating a rear suspension with an air-actuated grease gun,one spring pin will not take grease.Which of the following should be done first?

Introduction to Servicing Heavy-Duty Trucks

Shop Safety and Operations

Tools and Fasteners

Preventive Maintenance Program

Fundamentals of Electricity

Fundamentals of Electronics and Computers

Batteries

Charging Systems

Cranking Systems

Chassis Electrical Circuits

Diagnosis and Repair of Electronic Circuits

Multiplexing

Hydraulics

Clutches

Standard Transmissions

Standard Transmission Servicing

Torque Converters

Automatic Transmissions

Automatic Transmission Maintenance

Electronically Automated Standard Transmissions

Electronically Controlled Automatic Transmissions Ecats

Driveshaft Assemblies

Heavy-Duty Truck Axles

Heavy-Duty Truck Axle Service and Repair

Steering and Alignment

Wheels and Tires

Truck Brake Systems

Hydraulic Brakes and Air-Over-Hydraulic Brake Systems

Abs and Ebs

Air Brake Servicing

Vehicle Chassis Frame

Heavy-Duty Truck Trailers

Fifth Wheels and Coupling Systems

Heavy-Duty Heating, ventilation, and Air Conditioning Systems

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