freightliner S2 Operator's Manual page 34

Controls
11/28/2001
Fig. 4.13, Exhaust Brake Switch
When the transmission is in D (drive), the vehicle will
operate in 4th and 5th gear as needed. To shift down
into a lower gear, pull the lower half of the T-handle
selector up. Select the gear needed and release the
lower half of the T-handle selector.
On vehicles with an Allison MD Series automatic
transmission or an Eaton Autoshift automated trans-
mission, a push-button shift selector, shown in
Fig. 4.15, provides four, five, or six forward ranges
and one reverse range. See
information about the push-button shift selector.
Axle Switches
All axle switches contain a red LED that illuminates
the switch from within when the switch is turned on
(the upper part of the rocker is pressed). The legend
under the LED, if any, is not visible until the switch is
turned on.
IMPORTANT: A guard is positioned around all
axle switches to prevent unintentional activation.
NOTE: For more information on axle switch
function, see Chapter
Differential Lock Switch, Optional
NOTICE
Differential lock should only be engaged when
the vehicle is stopped or moving slowly at low
throttle. This will prevent internal axle damage.
The differential lock switch is a two-position guarded
rocker switch. It causes the wheels on each axle
governed by the switch to rotate together. It is also
known as side-to-side wheel lock. See
4.7
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Chapter 10 for more
11.
Fig. 4.16.
09/21/2012
Fig. 4.14, T-Handle Shifter
To lock the wheels together, press the upper half of
the rocker switch momentarily. To turn off differential
lock, press the upper half of the rocker switch again.
When the panel lights are on, the double-axle icon is
backlit in green.
IMPORTANT: The differential lock switch is
guarded to prevent unintentional switch activa-
tion. If the LED in the switch begins to blink dur-
ing normal operation, when the switch has not
been activated, this indicates an error condition.
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