
HAULOTTE GROUP
3 OPERATION
33
HAND PUMP
PROPORTIONAL VALVE
ROTATION BUTTON
RETRACT
BUTTON
MANUAL BOOM OPERATION
Manual retraction, rotation and lowering functions allow the booms to be moved and lowered during
hydraulic power interruption or failure.
The following procedures for manual retraction, rotation and lowering require a person on the ground
to operate the manual controls and hand pump.
The hydraulic hand pump is located in the pump compartment. In case of a power failure, the hand
pump and selected hydraulic valve can be used to manually retract the booms or rotate the boom
turntable.
To begin manual retraction or rotation, turn the proportional valve counterclockwise until it stops, and
insert pump handle, or tire iron into the pump handle fitting.
Manual Retraction
Begin manual retraction or rotation, by turning the proportional valve counterclockwise until it stops;
insert the pump handle into the pump handle fitting. Pushing and holding the
RETRACT
button while
simultaneously actuating the
HAND PUMP
will retract the secondary boom.
Refer to Figure 3-8.
Manual Rotation
To rotate the
TURNTABLE
counterclockwise:
Push and hold the
ROTATION
button
IN
.
Simultaneously actuate the
HAND PUMP
.
To rotate the
TURNTABLE
clockwise:
Pull
the
ROTATION
button
OUT
.
Simultaneously actuate the
HAND PUMP
.
NOTE: Turn
the
PROPORTIONAL VALVE
clockwise to return it to its original position before
lowering the booms or resuming normal operation.
Figure 3-8. Hand Pump Controls for Manual Operation
Содержание xlb-4725a
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