JLG G6-42A Operator Manual - Manual (Page 43)

Form No. 20036 • G6-42A Owner/Operator Manual
SWING MAST
SIDE
SHIFT
• 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.
Swing Mast
Capacity:
Maximum lift capacity is shown on attachment serial number plate. 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 mast. Study and understand
this chart before attempting to handle a load with swing mast attachment.
Controls:
Figure 13-8
The carriage tilt cylinder is used to tilt
the mast and the carriage. Tilt lever
controls mast tilt.
• Press right switch up to “SIDE SHIFT” to activate side shift function. Move
auxiliary hydraulic lever in appropriate direction.
• Press left switch down to “SWING” to activate swing function. Move
auxiliary lever in appropriate direction.
• Press right switch down to “MAST” to activate mast function. Move auxiliary
lever in appropriate direction.
Installation Procedure:
1. Remove carriage/fork combination or other attachment from boom head.
See page 13.1.
2. Install swing mast on boom head and connect auxiliary hydraulic hoses
to swing mast diversion valve hoses. Also connect electrical cable at boom
head.
Operation:
• Always lower carriage fully in mast and position forks straight ahead before
engaging load.
• To travel with a load, keep forks straight ahead and lower load to travel
position 1.2m (4 feet) or less above ground.
• Inspect supporting surface at delivery point and have it leveled if necessary.
• Level handler before raising load.
• If necessary, perform a “dry-run” (unloaded) of delivery to determine best
position for handler.
• Use a signal person to assist in positioning the load if necessary.
WARNING !
PRECAUTIONS
• Always level forks
(horizontally) before swinging
load to side. Swinging
unlevel forks could result
in load slipping from forks.
• The swing mast attachment
has a smaller load capacity
than the standard carriage/
fork attach. Study and
understand the swing mast
capacity chart before
handling a load with swing
mast.
• Read additional capacity
information under “Capacity”
heading on chart.
• Because the swing mast
increases lift height and can
swing load to side; it is
especially important to level
handler before lifting a load
more than 1.2m (four feet)
above ground level. See
page 11.0.
WARNING !
Do not handle a load with Swing
Mast attachment until you study
and understand the “Swing Mast
Capacity Chart.” If your handler
does not have a “Swing Mast
Capacity Chart,” ask your
supervisor to get one before
using the attachment.
WARNING !
Observe all precautions and load
capacity limits when handling
loads.
13.7