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Automatic Transmission
Third-Gear Hold
If your vehicle has this feature, your range selector has
a 2-3 position. You cannot shift up to the next higher
gear when the transmission is in this position unless
your engine-governed speed is exceeded, such as when
going downhill.
This feature is used for certain load and traffic conditions
or when plowing snow. See the Allison
Operator's Manual in your vehicle for more information
about this.
Manual Transmission Operation
Using the Clutch
When you are starting to move the vehicle, it is
important to begin with the engine speed at idle. Then
start to engage the clutch and listen for an engine speed
drop of about 100 rpm. At this point, the clutch is
engaging, so you should increase the engine speed and
fully engage the clutch.
2-16
Notice: If you increase the engine speed before the
clutch is fully engaged, you could damage your
transmission. Always allow the clutch to fully
engage before increasing engine speed.
Six-Speed Transmission
The transmission has gears that automatically
synchronize when you shift up or down. Choose the
gear which will maintain the road speed you want
while keeping the engine above two-thirds of the
®
Transmission
governed speed. When the engine speed drops below
two-thirds of the governed speed, shift into the next
lower gear before your engine begins to become
sluggish. When you shift down, be sure to double-clutch
if required.
See "Double Clutching" later in this section.
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