TM 9-2320-302-10
0004 00-6
DESCRIPTION AND USE OF OPERATOR'S CONTROLS
AND INDICATORS - CONTINUED
0004 00
INSTRUMENT PANEL - CONTINUED
2.
Upper Right Dash Panel.
Key
Control or Indicator
Function
1
Air Vent
Vents air into cab from heater/ventilator/defroster
and
air
conditioner.
Louvered
openings
are
adjustable.
12
Engine (Jake) Brake
Selection Switches
Select number of engine cylinders desired for braking
action (two, four, or six cylinders). Turn on left switch
for two cylinders, right switch for four cylinders, and
both switches for all six cylinders.
13
Fifth Wheel Slide
Permits repositioning of sliding fifth wheel from inside
cab. LOCK position deactivates control valve and
locks fifth wheel to baseplate. UNLOCK position
activates control valve to allow changes to total
length of tractor-trailer and changes to axle loads.
14
Inter-axle Lockout
Control Valve Lever
Locks and unlocks driveline based on changing
driving conditions.
(a)
LOCK. In poor traction conditions, stop vehicle
and place lever in LOCK position to lock up
driveline.
(b)
UNLOCK. When conditions are back to normal,
move lever to UNLOCK while vehicle is moving.
13
12
1
14
