Interaxle Differential Lock Switch; Two-Speed Rear Axle (Range) Switch - Peterbilt 348 2017 Operator's Manual

DASH- AND DOOR-MOUNTED CONTROLS
Interaxle Differential Lock
Switch
The interaxle differential allows
differential action between the forward
rear and the rear rear driving axles.
The interaxle differential lock switch
allows the operator to LOCK or
UNLOCK the differential. The guard
3
over this switch prevents you from
accidentally activating the lock.
3-56
WARNING!
Placing the differential lock in the
"LOCK" position while your wheels
are spinning could cause loss of
control or axle damage. You could
be hurt. Switch to "LOCK" only
when your wheels are not spinning.
See Interaxle Differential on page 4-47
for more information on using your
interaxle differential.
Y53-6060-1C1
Two-Speed Rear Axle
(Range) Switch
If your vehicle is equipped with a
two-speed rear axle, you can select
the axle range by the dash mounted
switch shown above. The low range
provides maximum torque for operating
off-highway. The high range is a faster
ratio for highway speeds.
(03/17)