OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-28
Published 06-24-16, Control # 241-01
G8—Drum 9 Park Switch
The drum 9 park switch enables and disables load drum
operation. With the drum 9 park on, the corresponding drum
handle is inoperable. The park brake is applied and the pawl
is engaged.
Press the top of the rocker switch to turn on the
corresponding drum park and engage the drum pawl.
Press the bottom of the rocker switch to turn off the
corresponding drum park switch and disengage the drum
pawl to allow drum operation.
G9—Auxiliary Drum 5 Handle (optional)
See Drum 5 (luffing or auxiliary hoist) on page 3-63 for
identification and operation of the drum 5 auxiliary hoist
controls.
H—Swing Controls
See Figure 3-4 for the following components.
H1—Swing Handle
The dual-axis handle allows the swing and boom/luffing hoist
to be operated at the same time with one handle.
Move the handle to the left to swing left. Swing speed
increases in relation to handle movement.
Release the handle to the center to stop. Swing speed
decreases to off, and the rotating bed slows to a stop. Move
the swing handle in the opposite direction to stop the swing
motion quicker.
Press the swing holding brake switch to hold the stopped
rotating bed in position.
Move the handle to the right to swing right. Swing speed
increases in relation to handle movement.
NOTE: If equipped, the optional swing alarm will beep to
warn personnel when the rotating bed is swung in
either direction.
H2—Swing Holding Brake Switch
Use the swing holding brake switch (on the side of the swing/
boom hoist handle) to hold the rotating bed in position for
short periods of time during the operating cycle. The swing
brake will apply, and the swing handle will be inoperable
while the switch is pressed.
Press the button to apply the swing holding brake.
Release the button to release the swing holding brake.
H3—Swing Brake Switch
The swing is equipped with a spring-applied, hydraulically
released disc brake.
Press the front of the rocker switch to turn on the swing
brake.
Press the rear of the rocker switch to turn off the swing brake.
J—Travel Controls
See
Figure 3-4
for the following components.
The crawlers are equipped with spring-applied, hydraulically
released disc brakes, which function as follows:
• Both crawler brakes release when either crawler handle
is moved from OFF.
• Both crawler brakes apply when both crawler handles
are moved to OFF.
• Both crawler brakes apply to hold the crane in position if
power is lost for any reason.
J1—Left Crawler Handle
J2—Right Crawler Handle
NOTE: The following directions of travel are with the
crawler drive shafts to the rear of the operator.
Move the handle to the front to travel forward. Speed
increases in relation to handle movement.
Release the handle to the center to stop traveling.
Move the handle to the rear to travel in reverse. Speed
increases in relation to handle movement.
NOTE: If equipped, the optional travel alarm will beep to
warn personnel when the crane is traveled in either
direction.
J3—Travel Detent Selector
NOTE: The travel detent selector allows the crawlers to be
operated in either direction at a selected speed
without the operator’s hand on the crawler handles.
Move both crawler handles in either direction from OFF to
select the desired speed and direction of travel. Pull up and
release the knob on the right crawler handle to turn on the
CAUTION
Avoid Swing Drive or Boom Damage!
Do not apply the swing holding brake or turn on the swing
park switch while swinging. The brake will bring the
rotating bed to an abrupt stop. This action could cause
damage to the boom from side loading or damage to the
swing drive from shock loading. Bring the rotating bed to a
smooth stop with the swing handle and then apply the
swing holding brake or turn on the swing park switch.
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