TM 5-3810-307-10
PARK BRAKE Indicator (40). The indicator is located at the upper right of the front
console panel. The red indicator lights when the PARK BRAKE Control (45) is in the ON
position.
HEATer Control (41). The control is located on the upper right side of the front console
panel. The control must be pulled out for high heat temperature.
HEATER FAN Switch (42). The switch is located on the right upper side of the front
console between the HEATer Control (41) and the DEFROST Control Knob (43). It is a
three-position toggle switch. Positioning the fan to HI activates the heater fan for high
speed. Positioning the switch to LO activates the heater fan for low speed and the center
position is the OFF position.
DEFROST Control Knob (43). The control knob is located on the upper right side of the
front console panel. The control must be pulled out for the heater air flow to be routed to
defrost the windshield.
Right Turn Signal Indicator (44). The indicator is located on the right upper of the front
console panel. The indicator lights when the Turn Signal Lever (15) is positioned for right
turn.
PARK BRAKE Control (45). The control is the yellow handle located on the right side of
the front console panel. The control is a push-pull-type air valve used to set and release the
parking brakes on the front and rear axles. Pull to apply parking brake, push to release
parking brake.
REAR STEER LOCK ENGAGED/DISENGAGED Indicators (46). The indicator is located
on the right lower side of the front console panel. There are two indicators. The red REAR
STEER LOCK ENGAGED indicator is on the right side and is lit when the rear wheels are
locked in a straight ahead position. The red REAR STEER LOCK DISENGAGED indicator
is lit when the rear wheels are not locked in a straight ahead position.
REAR AXLE STEERING LOCK Switch (47). The switch is a two-position toggle switch,
located on the lower right side of the front console panel. Placing the switch to
UNLOCKED, unlocks the rear axle and allows it to be steered by the REAR AXLE
STEERING Control Switch (48). The rear wheels MUST be straight ahead with the control
switch in the LOCKED position before the crane can be driven on the highway from the
carrier cab.
REAR AXLE STEERING Control Switch (48). The control switch is a three-position,
spring-centered-to-OFF toggle switch, located on the lower right of the front console panel.
This function provides conventional rear wheel steering of the rear axle and can only be
used safely when moving slowly. Positioning the switch to RIGHT with front wheels straight
ahead turns the rear wheels to steer the crane right. Positioning the switch to LEFT with
front wheels straight ahead turns the rear wheels to steer the crane left. The switch will
return to the center (OFF) position when released.
REAR STEER DIRECTION Indicator (49). The indicator arrows are located on the lower
right of the front console panel above the REAR AXLE STEERING Control Switch (48).
The indicator receives a signal from a sending unit on the axle to show that the rear wheels
are positioned to steer the crane left or right as selected by the REAR AXLE STEERING
Control Switch (48).
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