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1. Which of the following is NOT classified as an automated manual transmission (AMT)?
a.
Allison WT
b.
RoadRanger AutoShift
c.
Arvin Meritor FreedomLine
d.
Mercedes Benz AGS
2. What is the nominal torque rating of an AutoShift transmission with a RTAO-14710B-AS serial number?
a.
1450 lb–ft
b.
147 lb–ft
c.
710 lb–ft
d.
4710 lb–ft
3. Which of the following is true of the main box used on an Eaton AMT?
a.
single-countershaft
b.
twin-countershaft
c.
triple-countershaft
d.
compound planetary gearset
b
4. Which of the following is true of the function of an Eaton RoadRanger AMT electric shifter assembly?
a.
moves the shift finger transversely into one of the three rails
b.
moves the ball screw block on the gear select yoke
c.
actuates the shift shaft to move forward or rearward
d.
all of the above
d
5. When an AMT is J1939 multiplexed to the chassis data bus, which of the following is true?
a.
transmission electronics are networked to the chassis data backbone
b.
input hardware can be shared with other electronic systems on data bus
c.
transmission can both broadcast and receive information from other chassis systems
d.
all of the above
d
6. Which of the following AutoShift components are interchangeable?
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
d
7. What is used to signal rail position in current versions of AutoShift transmissions?
a.
Hall-effect sensors
b.
potentiometers
c.
variable capacitance sensors
d.
inductive pulse generators
8. Which of the following AutoShift components replaces the Hi–Lo flipper switch used on non-automated, RoadRanger
transmissions?
a.
slave valve
b.
master valve
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c.
range valve
d.
detente valve
9. When are both sides of the Eaton AMT range cylinder exhausted to atmosphere?
a.
low range
b.
all off phase
c.
high range
d.
all on phase
10. What is an inductive pulse generator used for in an AutoShift AMT?
a.
shaft speed signaling
b.
rail position sensing
c.
moving shift fingers
d.
shift shaft positioning
11. Technician A says current versions of the AutoShift AMTs use a single-module controller. Technician B says that a
disadvantage of current AutoShift AMTs is that the controller cannot be networked to a J1939 data bus. Who is correct?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
12. Technician A says that a function of the power management electronics used with Eaton AMTs is to protect the ECU
from voltage spikes that exceed 32 V-DC. Technician B says that the transmission ECU is located on the left side of
current versions of RoadRanger AMTs. Who is correct?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
13. Eaton AMT electronics are protected against which of the following circuit malfunctions?
a.
voltage spikes
b.
current overloads
c.
reverse voltage
d.
all of the above
14. How often is an Eaton AMT electric shifter assembly calibrated?
a.
each time the ignition key is turned off
b.
each time the ignition key is turned on
c.
whenever a fault code is logged
d.
whenever a technician accesses the data bus
15. 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?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
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16. Which of the following AMT components must be calibrated before a truck is placed in service?
a.
input shaft speed sensor
b.
inertia
c.
tailshaft speed sensor
d.
shifter module
d
17. What electrical principle is used in an Eaton RoadRanger AMT gear shift selector?
a.
smart switch
b.
Hall-effect
c.
potentiometer
d.
rheostat
b
18. Which of the following best describes the function of the gear select sensor in an Eaton AMT?
a.
shifts the rail shaft
b.
signals the rail select motor
c.
monitors shift finger position
d.
positions the shift finger
19. Where would you find inductive pulse generators in Eaton AMTs?
a.
input shaft speed sensor
b.
output shaft speed sensor
c.
mainshaft speed sensor
d.
all of the above
d
20. When a one-speed fallback failure occurs, which of the following is usually true?
a.
the fault is in the auxiliary section
b.
all shifting is inhibited
c.
only downshifts are possible
d.
a covert code is logged
b
21. When a five-speed fallback condition has occurred which of the following is true?
a.
fault is in auxiliary section
b.
main section is fully operational
c.
shifting is limited to 5-speeds
d.
all of the above
d
22. 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?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
23. Technician A says that in downshift fallback mode, AutoShift only permits downshifts. Technician B says that when a
transmission is in downshift fallback mode, it cannot be shifted out of neutral. Who is correct?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
24. Technician A says that the first step in troubleshooting Eaton AMT complaints should always be to identify any
logged fault codes. Technician B says that an AutoShift pretest requires that the technician check the electrical and
pneumatic inputs to the transmission before progressing to more detailed troubleshooting. Who is correct?
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a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
b
25. Which of the following AMTs are two-pedal systems?
a.
UltraShift
b.
Mercedes AGS
c.
FreedomLine
d.
all of the above
d
26. Which SA on a J1939 chassis data bus is assigned to the transmission electronics?
a.
00
b.
03
c.
01
d.
08
b
27. What is used to stop the countershafts for a shift in a RoadRanger AMT if the clutch is either defective or out of
adjustment?
a.
nothing, gear clash will result
b.
inertia brake
c.
clutch brake
d.
snubber valve
b
28. Technician A says that a self-adjusting, system-actuated clutch is used with a ZF Meritor FreedomLine transmission.
Technician B says that Mercedes AGS troubleshooting is performed using Freightliner ServicePro software. Who is
correct?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
29. What is the creep feature used on an Eaton wet clutch known as?
a.
Urge-to-Move
b.
auto-creep
c.
converter stall
d.
driveline stall
30. 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?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
31. What is used to signal rail position in early versions of AutoShift AMTs?
a.
Potentiometers
b.
Hall-effect sensors
c.
Variable capacitance sensors
d.
Inductive pulse generators
32. 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?
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a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
33. What servo force is used to engage an Eaton AMT inertia brake?
a.
electrical force
b.
air pressure
c.
hydraulic force
d.
mechanical force
34. When removing an inertia brake from an Eaton AMT, which of the following must be done first?
a.
remove the transmission from the chassis
b.
disconnect the vehicle battery bank
c.
remove the transmission air/filter regulator
d.
remove the transmission ECU
35. Technician A says that multiplexing enables the transmission and engine to precisely synchronize engine and
transmission shaft speeds for shift events. Technician B says that multiplexing communication betwen the engine and
transmission makes the clutch unnecessary in AMTs. Who is correct?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
36. What gear oil is recommended by Eaton for use in their AMTs?
a.
40W Military spec mineral oil
b.
synthetic E-500
c.
Dexron II
d.
5W-40 engine oil
37. 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?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
38. Technician A says that in the event of a loss of chassis electricity, an Eaton AMT will default to mechanical operation.
Technician B says that so long as the engine continues to run, the output shaft on an Eaton AMT must rotate. Who is
correct?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B
39. What is used to change the direction that rail select or gear select motors turn at in an Eaton AMT?
a.
DC polarity
b.
AC frequency
c.
pulse width modulation on-off time
d.
motor turning direction is CW only
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40. 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?
a.
Technician A only
b.
Technician B only
c.
Both A and B
d.
Neither A nor B