Question 1

What is the nominal torque rating of an AutoShift transmission with a RTAO-14710B-AS serial number?

Accepted Answer

A)  1450 lb-ft 
B)  147 lb-ft 
C)  710 lb-ft 
D)  4710 lb-ft 
A)  1450 lb-ft 
B)  147 lb-ft 
C)  710 lb-ft 
D)  4710 lb-ft A

Question 2

What is an inductive pulse generator used for in an AutoShift AMT?

Accepted Answer

A)  shaft speed signaling 
B)  rail position sensing 
C)  moving shift fingers 
D)  shift shaft positioning 
A)  shaft speed signaling 
B)  rail position sensing 
C)  moving shift fingers 
D)  shift shaft positioning A

Question 3

Technician A says that the inertia brake used on RoadRanger AMTs is located on the underside of the transmission.Technician B says that the inertia brake is hydraulically actuated.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 A

Question 4

What is used to change the direction that rail select or gear select motors turn at in an Eaton AMT?

Accepted Answer

A)  DC polarity 
B)  AC frequency 
C)  pulse width modulation on-off time 
D)  motor turning direction is CW only 
A)  DC polarity 
B)  AC frequency 
C)  pulse width modulation on-off time 
D)  motor turning direction is CW only

Question 5

Which of the following AutoShift components are interchangeable?

Accepted Answer

A)  rail-select and gear-select ball screws 
B)  rail-select and gear-select motors 
C)  both A and B 
D)  neither A nor B 
A)  rail-select and gear-select ball screws 
B)  rail-select and gear-select motors 
C)  both A and B 
D)  neither A nor B

Question 6

Technician A says that the first generation of Eaton AMTs used a two module transmisson control system.Technician B says that current versions of Eaton AMTs use a single ECU to manage all transmission functions.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 7

Where would you find inductive pulse generators in Eaton AMTs?

Accepted Answer

A)  input shaft speed sensor 
B)  output shaft speed sensor 
C)  mainshaft speed sensor 
D)  all of the above 
A)  input shaft speed sensor 
B)  output shaft speed sensor 
C)  mainshaft speed sensor 
D)  all of the above

Question 8

Which SA on a J1939 chassis data bus is assigned to the transmission electronics?

Accepted Answer

A)  00 
B)  03 
C)  01 
D)  08 
A)  00 
B)  03 
C)  01 
D)  08

Question 9

Which of the following AutoShift components replaces the Hi-Lo flipper switch used on non-automated,RoadRanger transmissions?

Accepted Answer

A)  slave valve 
B)  master valve 
C)  range valve 
D)  detente valve 
A)  slave valve 
B)  master valve 
C)  range valve 
D)  detente valve

Question 10

What electrical principle is used in an Eaton RoadRanger AMT gear shift selector?

Accepted Answer

A)  smart switch 
B)  Hall-effect 
C)  potentiometer 
D)  rheostat 
A)  smart switch 
B)  Hall-effect 
C)  potentiometer 
D)  rheostat

Question 11

Technician A says that Eaton electronics power up all transmission sensors at V-Bat.Technician B says that the Hall-effect sensors used to signal shift rail position require a 5-volt V-Ref input.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 12

What is the creep feature used on an Eaton wet clutch known as?

Accepted Answer

A)  Urge-to-Move 
B)  auto-creep 
C)  converter stall 
D)  driveline stall 
A)  Urge-to-Move 
B)  auto-creep 
C)  converter stall 
D)  driveline stall

Question 13

Which of the following AMT components must be calibrated before a truck is placed in service?

Accepted Answer

A)  input shaft speed sensor 
B)  inertia 
C)  tailshaft speed sensor 
D)  shifter module 
A)  input shaft speed sensor 
B)  inertia 
C)  tailshaft speed sensor 
D)  shifter module

Question 14

Technician A says that Eaton GEN III electronics will prevent a driver from making a shift that could result in transmission damage.Technician B says that when an Eaton AMT service light flashes a code 25,the transmission should be immediately pulled from service.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 15

What is used to signal rail position in current versions of AutoShift transmissions?

Accepted Answer

A)  Hall-effect sensors 
B)  potentiometers 
C)  variable capacitance sensors 
D)  inductive pulse generators 
A)  Hall-effect sensors 
B)  potentiometers 
C)  variable capacitance sensors 
D)  inductive pulse generators

Question 16

Technician A says that an in-place fallback could mean the transmission remains stuck in neutral.Technician B says that an in-place fallback could mean the transmission remains stuck in a specific gear ratio.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 17

Eaton AMT electronics are protected against which of the following circuit malfunctions?

Accepted Answer

A)  voltage spikes 
B)  current overloads 
C)  reverse voltage 
D)  all of the above 
A)  voltage spikes 
B)  current overloads 
C)  reverse voltage 
D)  all of the above

Question 18

Technician A says that fault codes can be numerically blinked using the transmission wait light on current versions of AutoShift.Technician B says that when the transmission service light flashes,the system has logged a fault code.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 19

When are both sides of the Eaton AMT range cylinder exhausted to atmosphere?

Accepted Answer

A)  low range 
B)  all off phase 
C)  high range 
D)  all on phase 
A)  low range 
B)  all off phase 
C)  high range 
D)  all on phase

Question 20

When a one-speed fallback failure occurs,which of the following is usually true?

Accepted Answer

A)  the fault is in the auxiliary section 
B)  all shifting is inhibited 
C)  only downshifts are possible 
D)  a covert code is logged 
A)  the fault is in the auxiliary section 
B)  all shifting is inhibited 
C)  only downshifts are possible 
D)  a covert code is logged

Exam 20: Electronically Automated Standard Transmissions

What is the nominal torque rating of an AutoShift transmission with a RTAO-14710B-AS serial number?

What is an inductive pulse generator used for in an AutoShift AMT?

Technician A says that the inertia brake used on RoadRanger AMTs is located on the underside of the transmission.Technician B says that the inertia brake is hydraulically actuated.Who is correct?

What is used to change the direction that rail select or gear select motors turn at in an Eaton AMT?

Which of the following AutoShift components are interchangeable?

Technician A says that the first generation of Eaton AMTs used a two module transmisson control system.Technician B says that current versions of Eaton AMTs use a single ECU to manage all transmission functions.Who is correct?

Where would you find inductive pulse generators in Eaton AMTs?

Which SA on a J1939 chassis data bus is assigned to the transmission electronics?

Which of the following AutoShift components replaces the Hi-Lo flipper switch used on non-automated,RoadRanger transmissions?

What electrical principle is used in an Eaton RoadRanger AMT gear shift selector?

Technician A says that Eaton electronics power up all transmission sensors at V-Bat.Technician B says that the Hall-effect sensors used to signal shift rail position require a 5-volt V-Ref input.Who is correct?

What is the creep feature used on an Eaton wet clutch known as?

Which of the following AMT components must be calibrated before a truck is placed in service?

Technician A says that Eaton GEN III electronics will prevent a driver from making a shift that could result in transmission damage.Technician B says that when an Eaton AMT service light flashes a code 25,the transmission should be immediately pulled from service.Who is correct?

What is used to signal rail position in current versions of AutoShift transmissions?

Technician A says that an in-place fallback could mean the transmission remains stuck in neutral.Technician B says that an in-place fallback could mean the transmission remains stuck in a specific gear ratio.Who is correct?

Eaton AMT electronics are protected against which of the following circuit malfunctions?

Technician A says that fault codes can be numerically blinked using the transmission wait light on current versions of AutoShift.Technician B says that when the transmission service light flashes,the system has logged a fault code.Who is correct?

When are both sides of the Eaton AMT range cylinder exhausted to atmosphere?

When a one-speed fallback failure occurs,which of the following is usually true?

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 Controlled Automatic Transmissions Ecats

Driveshaft Assemblies

Heavy-Duty Truck Axles

Heavy-Duty Truck Axle Service and Repair

Steering and Alignment

Suspension Systems

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

Filters