Gradall 544B Operation Manual - Manual (Page 31)

Procedure: chart carefully before attempting to handle a load
with swing mast attachment.
NOTE: When swing mast is equipped with an
optional panel handler attachment, additional
restrictions in operation and capacity will apply.
Refer to Swing Mast Capacity Chart or contact
your Gradall Material Handler Distributor for
complete instructions and restrictions on use.
Remove carriage/fork combination or other
attachment from boom head (refer to attachment
installation - page 23).
Install truss boom on boom head.
If truss boom winch furnished, connect auxiliary
hydraulic hoses winch.
Approach truss or truss bundle with boom above
and parallel to load.
Position truss boom approximately parallel with
main boom.
Position truss boom/winch hook as close as
possible to balance point of load and secure load to
boom using short slings or other rigging. Be sure
rigging will not allow load to slip in any direction.
Open clamps at heel of truss boom far enough to
clear load and tilt truss boom up until truss/bundle
contacts heel of truss boom.
Close clamps to hold load lightly and secure
clamps.
Transport load to delivery site and attach tag lines
if load will be freely suspended.
PRECAUTIONS
Always level forks (horizontally) before
swinging load to side. Swinging un-
leveled forks may result in load slipping
from forks.
The swing mast attachment has a smaller
load capacity than the standard carriage/
fork attachment. Study the swing mast
capacity chart carefully before handling a
load with swing mast.
Read additional capacity information
under Capacity heading.
Because the swing mast increases lift
height and can swing load to side, it is
especially important to level handler be-
fore lifting a load more than four feet
above ground level (refer to page 19).
Capacity
Maximum lift capacity is shown on serial number
plate (located on right cab wall). However, maximum
lift capacity applies only to certain areas within boom
extension/elevation pattern of handler/swing mast
combination. A separate capacity chart must be used
for handlers equipped with swing mast. Study this
SWING MAST
29
Do not attempt to handle a load with swing
mast attachment until you have studied
swing mast capacity chart carefully. If your
handler does not have a swing mast capac-
ity chart, ask your supervisor to get one.
Controls:
The carriage tilt cylinder is used to tilt mast and the
carriage tilt lever controls mast tilt.
A special auxiliary control lever is furnished on units
equipped with swing mast attachment. The lever
handle includes five push-button switches. Two of
these switches are used for swing mast operation.
To raise or lower fork carriage, depress Raise/Lower
button (No. 1) and hold while moving lever in appro-
priate direction as shown.
To swing forks to left or right, depress Right/Left
button (No.3) and hold while moving lever in appro-
priate direction as shown.
Procedure:
Remove carriage/fork combination or other attach-
ment from boom head (refer to Attachment Instal-
lation (page 23).
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MULTI-FUNCTION
AUXILLARY
CONTROL LEVER