STARTING AND DRIVING
ALLISON TRANSMISSION
DANGER
Use of the hydraulic retarder during
inclement weather or when road surfaces
are slippery could result in death, serious
injury, or property damage. On vehicles
which have a primary retarder control
based upon closed throttle position, brake
pedal position, or brake apply pressure,
always manually disable the retarder
controls during inclement weather or
slippery road conditions, using the OEM
provided retarder enable switch if present.
DANGER
If the transmission retarder does not
apply, death, serious injury, or property
damage may occur. Operator should be
prepared to apply vehicle brakes or other
retarder device if the transmission retarder
does not apply.
DANGER
If the transmission retarder does not
function, death, serious injury, or property
damage may occur. Be sure to test for
proper retarder function periodically. If a
retarder is present but is not detected by
“autodetect,” the retarder will not function.
Whenever the retarder does not apply,
seek service help immediately.
WARNING
To avoid personal injury or vehicle
damage, do not use the retarder during
inclement weather or when road surfaces
are slippery.
DANGER
To avoid personal injury and component
damange, do not leave the vehicle with
the engine is running. The vehicle can
move unexpectedly and you or others
could be injured. To leave the engine
running, do not leave the vehicle until you
have completed all of the following
procedures:
1 Put the transmission in N (Neutral).
2 Be sure the engine is at low idle (500–
800 rpm).
3 Apply the parking brakes and
emergency brake and make sure they
are properly engaged.
4 Chock the wheels and take any other
steps necessary to keep the vehicle
from moving.
WARNING
Avoid contact with the hot uid or the
sump when draining transmission uid.
Direct contact with the hot uid or the hot
sump may result in bodily injury.
NOTE
Without the SAE J1939 communication
datalink, the shift selector cannot display
the selected transmission range. Vehicle
operation will be affected.
NOTE
Assuming proper installation of direction
signal wire 134, most Allison shift
selectors may still be used to command
transmission direction changes in these
circumstances. Due to the failure of the
SAE J1939 datalink communication,
however, the shift selector cannot display
the selected range. When this condition
exists, it is advisable to slowly and
carefully apply the throttle each time a
change of direction has been selected in
order to verify the direction of operation
before accelerating the vehicle.
Scope of Manual
This Operator’s Manual contains a
variety of information about the Allison
3000 and 4000 Product Families
Transmission, and its Allison 5th
Generation Controls features.
Additional information about your
transmission is available at
www.allisontransmission.com using the
publications links shown on the home
page. Refer to the Sales and Service
Locator at www.allisontransmission.com
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