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selector to the normal driving position. These positions also provide progressively
greater engine braking power (the lower the gear range, the greater the braking ef-
fect). Use (1) when pulling through mud and snow or driving up steep grades. This
position provides maximum engine braking power. Use R (reverse) for backing the
vehicle. The vehicle should be completely stopped before shifting from a forward
gear to reverse. Reverse gear provides the greatest tractive advantage.
CAUTION: In the lower ranges (1, 2 and 3) the transmission will upshift above the
highest gear selected when the recommended engine governed speed for that gear
is exceeded.
ALLISON TRANSMISSION CABLE ADJUSTMENTS
To properly adjust the transmission shift cable, the following must be done.
1. Place the selector in neutral with the cable connected at the selector and disconnected at the transmis-
sion.
2. Find neutral on the transmission. (This is accomplished by rotating the manual range selector shaft
on the transmission all the way counterclockwise, then rotate it one click clockwise.)
3. Adjust the trunnion pin so that it slides easily in and out of the hole in the shift lever on the transmis-
sion. Check the neutral safety switch on the selector to be sure the engine will start only in neutral.
Adjust the mechanical modulator per the following procedure:
1. With the modulator cable disconnected at the engine, rotate fuel control lever on the engine to full
throttle position.
2. Adjust modulator slip joint to push cable until the cable comes within 1/8 inch of bottoming, when
throttle is wide open.
3. Adjust the clevis or trunnion on the end of the cable to permit "free pin" with the fuel control lever.
Install and secure the pin.
4. Check accelerator linkage for the proper return to the idle position.
5. Check to be certain there is between 1 3/16" and 1 9/16" travel in modulator cable.
6. If the throttle linkage is readjusted for any reason, the mechanical modulator must be readjusted as
above.
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 DO
NOT SHIFT light located below shift selector will disable the pad and no tones will be
heard. (See DO NOT SHIFT 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.
70
SELECT
MONITOR
MODE ON
R
MODE
N
D
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