Mack M359 - Differential Locks

STARTING AND DRIVING
ALLISON TRANSMISSION
transmission uid expansion when the
temperature increases. The lower band,
referred to as COLD CHECK, is used
when the transmission uid is below
operating temperature. The upper band,
referred to as HOT CHECK , is used
when the transmission uid is at normal
operating temperature. The OEM may
refer to these as COLD FULL/COLD
ADD (COLD CHECK) and HOT
FULL/HOT ADD (HOT CHECK).
1 Allison Dipstick, 11 Liter Engine
Cold Check
WARNING
If you leave the vehicle and the engine is
running, the vehicle can move
unexpectedly and you or others could be
injured. If you must 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.
CAUTION
DO NOT start the engine until the
presence of sufcient transmission uid
has been conrmed. Remove the
transmission uid dipstick and be sure the
static uid level is near the HOT FULL
mark.
CAUTION
The uid level rises as uid temperature
rises. DO NOT ll the transmission above
the COLD CHECK band if the
transmission uid is below normal
operating temperatures. During operation,
an overfull transmission can become
overheated, leading to transmission
damage.
NOTE
With engine off, the uid level should
reach the hot run band or higher on the
dipstick even at cold ambient
temperatures. The cold check band is
calibrated on the stick for the uid level
attained while the transmission is running
and in N (Neutral). Do not move the
vehicle until the uid level reaches the
cold full mark with engine running and
transmission in N (Neutral).
NOTE
The correct uid level cannot be
determined unless the transmission is in a
level position.
The COLD CHECK band veries the
transmission has adequate uid for
startup and operation until it can be
checked at the operating (hot)
temperature. Only use this check to
conrm adequate uid level for a cold
startup and not to set uid levels for
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X Publication_PC28