OPERATING CONTROLS AND PROCEDURES 18000 OPERATOR MANUAL
3-42
Published 12-05-17, Control # 032-23
Travel Operation
1. Before traveling:
a. Plan travel route. It must be free of ground and
overhead constructions.
b. Check crawlers for proper adjustment.
c. Warn personnel to stand clear of travel area. Do not
travel without a signal person.
2. Position boom at or above boom angle given on capacity
chart when traveling with load.
3. Travel with boom in-line with crawlers except when
swinging is necessary while traveling. Travel with boom
facing direction of travel.
4. For traveling with load, carry load as close to ground as
possible, stabilizing load with taglines.
For traveling without load, carry load block and weight
ball low enough that they cannot swing into boom. If
desired, tie off load block at front of rotating bed.
5. Increase engine speed to desired RPM with hand
throttle. Depress foot throttle to momentarily increase
engine speed when more power is required.
6. Select desired travel speed, low or high.
NOTE: The following directions of travel are with front of
upperworks and front of lowerworks facing
same direction.
• Operator’s cab is at front of upperworks.
• Crawler motors are at rear of lowerworks.
• Crawler pin handles on carbody are at front of
lowerworks.
If front of upperworks and front of lowerworks
face in opposite directions, crane will travel in
the direction opposite handle movement.
7. To TRAVEL STRAIGHT (Figure 3-22
), move both
crawler handles the same amount in desired direction
from off.
WARNING
Tipping Hazard!
Travel surface must be firm and uniformly supporting.
For traveling with load, grade must not exceed 1% — 1 ft
in 100 ft (0,3 m in 30 mm) — in any direction.
For traveling without load, grade in direction of travel must
not exceed 30% — 30 ft in 100 ft (9 m in 30 m); grade from
side to side must not exceed 2% — 2 ft in 100 ft (0,6 m in
30 m), measured at boom hinge pins.
For all travel on grades, see Maximum Allowable Travel
Specifications chart in Capacity Chart Manual.
Failing to comply with above specifications can result in
tipping.
Moving Crane Hazard!
Know position of upperworks with relation to lowerworks
before traveling. An accident can result if crane travels
opposite intended direction.
CAUTION
Boom Damage!
To prevent shock loading boom and rigging:
• Perform all travel functions — starting, turning,
stopping — slowly and smoothly.
Crawler Damage!
To prevent damage to crawler components (treads,
rollers, frames), use care to prevent dirt from piling up at
tumbler and roller ends of crawlers when turning on soft
surfaces:
• Bring crawlers to a complete stop before changing
travel direction
• Turn a few degrees. Then slowly travel forward or
reverse so dirt falls away from crawlers. Continue this
procedure until desired turn has been made.
• Avoid sharp turns (Figure 3-23
) if possible
• Make gradual turns (Figure 3-24
) or counter-rotate
(Figure 3-25
) whenever possible so both crawlers are
always powered
• Clean crawlers often
• Keep crawler treads properly adjusted
WARNING
Flying Object Hazard!
Excessive dirt build-up at tumbler and roller ends of
crawlers can result in excessive tension in tread
connectors. Tread connectors can break if over
tensioned, causing treads to fly apart unexpectedly with
dangerous force.
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