OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-40
Published 06-24-16, Control # 241-01
3. Swing back to the digging area as the bucket lowers.
4. Stop swinging when the bucket lands in the digging
area.
5. Fully apply the holding and closing line brakes and
release the holding line handle to OFF when the bucket
contacts the digging area.
6. Repeat the cycle.
Travel Operation
NOTE: For the MAX-ER 2000, the crane cannot be
traveled until drum 9 is parked.
1. Perform the following before traveling:
• Plan the travel route. It must be free of ground and
overhead obstructions.
• Check the crawlers for proper adjustment.
• Warn personnel to stand clear of the travel area. Do
not travel without a signal person.
2. Position the boom at or above the boom angle given on
the capacity chart when traveling with a load.
3. Travel with the boom in line with the crawlers except
when swinging is necessary while traveling. Travel with
the boom facing the direction of travel.
4. When traveling with a load, carry the load as close to the
ground as possible. Stabilize the load with taglines.
When traveling without a load, carry the load block and
weight ball low enough that they cannot swing into the
boom or jib. If desired, tie off the load block at the front of
the rotating bed.
5. Increase engine speed to the desired rpm with the hand
throttle. Press the foot throttle to momentarily increase
engine speed when more power is required.
6. Select the desired travel speed, low or high.
WARNING
Tipping Hazard!
Avoid severe injury or equipment damage. Failing to
comply with the following specifications can result in
tipping.
The travel surface must be firm and uniformly supporting.
When traveling with a load, the grade must not exceed 1%
in any direction.
When traveling without a load, the grade in direction of
travel must not exceed 30%. The grade from side to side
must not exceed 2%, measured at the boom hinge pins.
For all travel on grades, see the Maximum Allowable
Travel Specifications chart.
WARNING
Moving Crane Hazard!
Avoid severe injury. An accident can result if the crane
travels opposite of the intended direction. Know the
position of the crawler drive shafts before traveling.
Flying Object Hazard!
Avoid severe injury. The tread connectors can break if
overtensioned, causing the treads to fly apart
unexpectedly with dangerous force. Excessive dirt
buildup at the tumbler and front roller ends of the crawlers
can result in excessive tension in the tread connectors.
CAUTION
Avoid Shock Load Damage to Boom and Rigging!
Perform all travel functions—starting, turning, and
stopping—slowly and smoothly.
Avoid Crawler Damage!
Avoid damage to the crawler components (treads, rollers,
frames)!
Use care to prevent dirt from piling up at the tumbler and
front roller ends of the crawlers when turning on soft
surfaces:
• Bring the crawlers to a complete stop before
changing travel direction.
• Turn a few degrees, then slowly travel forward or in
reverse so the dirt falls away from the crawlers.
Continue this procedure until the desired turn has
been made.
• Avoid sharp turns if possible (Figure 3-23
).
• Make gradual turns (Figure 3-24
) or counter-rotate
(Figure 3-25
) whenever possible so both crawlers are
always powered.
• Clean the crawlers often.
• Keep the crawler treads properly adjusted.
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