Specifications

PAGE 36 — MODULAR LIGHT TOWER — PARTS & OPERATION MANUAL — REV. #3 (06/26/06)
MODULAR LIGHT TOWER — MAINTENANCE
Check Cable Wear
The wire rope (cable) that raises and extends the mast is a
very important part of the light tower. There is one cable
that raises and extends the lower portion of the mast. There
is a second cable that serves to extend the top portion of
the mast. Wire rope (cable) will fail if it is worn, frayed,
misused, crushed, kinked or damaged in any way. Always
check the mast cable and pulleys for any abnormalities be-
fore use. Do not use it if there is even the slightest cause
for concern.
When either cable needs to be replaced, they should both
be replaced at the same time. This is most easily done by
positioning the mast in the horizontal resting position. Then
disassemble the mast by disconnecting the cables form the
mast and sliding the sections apart. WARNING! The mast
sections are heavy and awkward. Use proper lifting devices
and procedures. Then the lower cable should be discon-
nected from the winch.
The mast sections, latches, cable clamps, pulleys, etc.
should be inspected at this time and repaired or replaced as
necessary. There are a total of 4 pulleys. They should be
removed, and replaced if worn or damaged, as they can
cause premature cable failure if they are in poor condition.
Reassemble the cable to the top section of the mast as
shown in the diagram and slide it into the middle section of
the mast. Reconnect the cable to the top of the middle
section of the mast.
Reassemble the cable to the middle of the mast, as shown
in the diagram, and slide it into the bottom section of the
mast. Route the cable through the 2 pulleys in the mast
pivot assembly, as shown in the Figure 15. Then route the
cable through the lower pulley located on the trailer, and
reattach it to the winch.
Raise, extend, retract and lower the mast several times to
verify correct operation.
Figure 15. Cable Pulley Routing