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MD3060 WORLD TRANSMISSION
The Allison electronic world transmission provides five forward speeds and one
reverse. Fourth gear is a 1 to 1 ratio while the fifth gear is an overdrive with a .75 to 1
ratio. The push-button shift selector is located on the right area of the dash. The trans-
mission and selector must be in “N” neutral to start the engine.
NOTE:
Transmission and shift selector will return to “N” when engine is stopped
and power switched off. If it does not return to “N” or starts in any other gear, unit has
malfunctioned. Seek service immediately.
The push-button shift selector has R, N, D, down arrow, up arrow, a MODE button,
and a digital display. When a range button has been pressed, a tone will sound, the
SELECT
indicator displays the chosen operation (if Electronic Control Unit (ECU) de-
termines the shift is acceptable), and the transmission will shift to the starting range as
indicated on the MONITOR display. In Drive, selection of a specific gear can be accom-
plished by pressing the UP or DOWN arrow buttons. Conditions resulting in the CHECK
TRANSMISSION
light located below shift selector will disable the pad and no tones
will be heard. (See CHECK TRANSMISSION LIGHT)
A “MODE” button is located on the push-button shift selector to activate a second shift schedule. The
initial start up is in primary (power mode) and secondary (economy mode) is selected by pressing the “MODE”
button. The display will indicate the mode on for secondary (economy mode). In economy mode the trans-
mission shift to higher gear at lower engine RPM.
With an Allison MD-equipped vehicle, it is not necessary to select the right moment to upshift or down-
shift during the changing road and traffic conditions. The Allison MD does it for you. However, knowledge
of the gear ranges and when to select them will make vehicle control and your job even easier.
MD 3060 GEAR SELECTION
WARNING: In the event the operator leaves the vehicle, even momentarily, while the engine is running,
be sure that the transmission is in Neutral, parking brake and/or emergency brakes are set and properly
engaged, and the wheels are chocked. Unexpected and possible sudden vehicle movement may occur if
these precautions are not taken.
R—Reverse
The vehicle must be completely stopped before shifting from Forward to Reverse or from Reverse to
F
orward. The SELECT indicator will display R and the MONITOR will display R when Reverse is attained.
N—Neutral
Use Neutral to start the engine, to check vehicle accessories, and for extended periods of engine idle
operation. Under normal operation, the transmission is directed by the ECU to Neutral during the start-up
procedure. This occurs automatically with the push-button selector. If the vehicle starts in any range except
N
eutral, seek service immediately. Neutral is also used during stationary operation of the power takeoff (if
your vehicle is equipped with a PTO). The SELECT indicator will display Neutral and the MONITOR will
display Neutral.
WARNING: Do not allow your vehicle to coast in Neutral. This practice can result in transmission dam-
age. Also, no engine braking is available in Neutral.
D—Drive
The vehicle will attain first gear when D is selected, and as the speed increases, the transmission will
upshift automatically through each gear. As the vehicle slows down, the transmission will downshift auto-
matically. The SELECT indicator will display the highest gear available and the Monitor will display the
current operating gear.
2, 3, 4, 5 Gears
SELECT MONITOR
MODE ON
MODE
R
N
D
