INTRODUCTION
Vehicle manufacturers may choose different types of shift selectors for their
vehicles. The shift selector in your Allison-equipped vehicle will be similar to one
of the pushbutton or lever styles shown above.
With an Allison-equipped vehicle, it is not necessary to select the right moment to
upshift or downshift during changing road and traffic conditions. The Allison
Motorhome Series transmission does it for you. However, knowledge of the shift
selector positions, available ranges, and when to select them, make vehicle control
and your job even easier. Select lower ranges when descending long grades (with
or without retarder) to reduce wear on service brakes. Refer to the Range
Selection table at the end of this section for related information.
6
1
6
1
6
1
MODE
6
1
V07343.03.01
HOLD OVERRIDE
BUTTON
HOLD OVERRIDE
BUTTON
MODE ID
MODE ID
*
MODE INDICATOR
(LED)
MODE INDICATOR
(LED)
MODE ID
MODE
INDICATOR (LED)
Push simultaneously
to enter diagnostic
mode and fluid
level check
NOTE:
The first number displayed is highest forward range available and second number is range
attained in selected position.
Visually check to confirm range selected. If display is flashing, shift is inhibited.
*
DIGITAL DISPLAY
*
*
MODE BUTTON
MODE BUTTON
DIGITAL DISPLAY
DIGITAL DISPLAY
DISPLAY MODE
DIAGNOSTIC BUTTON
DISPLAY MODE
DIAGNOSTIC BUTTON
Figure 6. Allison 4
th
Generation Controls Shift Selectors
17
