Peterbilt 579 - Page 139

SWITCHES
50. Suspension, Dump
Turn
switch on to deate Suspension
Air Bags. The switch is guarded
to protect you from accidentally
deating the suspension. This switch
does not require ignition power to
maintain the desired switch setting.
WARNING!
CAUTION
Do not operate the Air Suspension De-
ate Switch (Dump Valve) while driv-
ing. Sudden deation while your vehi-
cle is moving can affect handling and
control and could lead to an accident.
Use this switch only when your vehicle
is not moving.
Operating a vehicle with air suspen-
sion bags either overinated or under-
inated may cause damage to drive
-
line components. If a vehicle must
be operated under such conditions, do
not exceed 5 mph (8 km/h).
51. Suspension, Lift
Turn
switch on to over-inate
Suspension Air Bags. Turn switch off
for normal suspension height.
52. Suspension, Third
Axle Lift
Turn
switch on to raise Third
Axle. This switch does not require
ignition power to maintain the
desired switch setting.
53. Trailer,
Air Supply
The red
octagon knob controls the
air supply to the trailer.
54. Trailer,
Axle (3rd Axle) Lift
Turn
switch on to lift 3rd Trailer
Axle. This switch does not require
ignition power to maintain the
desired switch setting.
55. Trailer,
Axle Lift Forward
Turn
switch on to lift Forward
Trailer Axle. This switch does not
require ignition power to maintain
the desired switch setting.
56. Trailer, Axle Lift Rear
Turn
switch on to lift Rear Trailer
Axle. This switch does not require
ignition power to maintain the
desired switch setting.
57. Trailer,
Belly Dump
Turn
switch on to open Trailer
Belly Dump.
58. Trailer,
Dump Gate
Turn
switch on to open Trailer
Dump Gate.
59. Trailer,
Dump Gate Center
Turn
switch on to open Trailer
Center Dump Gate.
60. Trailer,
Dump Gate Front
Turn
switch on to open Trailer
Front Dump Gate.
61. Trailer,
Dump Gate Rear
Turn
switch on to open Trailer
Rear Dump Gate.
62. Trailer
Hotline
Turn
switch on to supply electrical
power to trailer accessories.
3
(04/13) Y53-6047–2C 3-67