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MLT25 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #0 (11/28/12) — PAGE 23
MAINTENANCE
SERVICING THE MAST EXTENSION CABLE
SYSTEM
To replace the cable in the mast extension cable system,
use the following steps (See Figure 13):
Figure 13. Mast Extension Cable System
1. Lower the mast to the horizontal resting position.
2. Inspect the cable clamps, pulleys, and other components
for worn or damaged parts. If either of the cables on
the mast needs to be replaced, they should both be
replaced at the same time.
3. Disassemble the mast by disconnecting the cables
from the mast and sliding the sections apart. The lower
cable can be disconnected from the winch.
CENTER
MAST
PULLEY
ROUTE TO
HAND WINCH
LOWER
MAST
PULLEY
UPPER
MAST
CENTER
MAST
LOWER
MAST
LOWER
MAST
SHACKLE
WARNING
The mast sections are heavy and awkward to handle.
Use proper lifting devices and procedures when
servicing the mast and its components.
4. There are two pulleys in the mast raise/lower cable
system. They should be removed and replaced if worn
or damaged. Worn or damaged pulleys can cause
premature cable failure.
5. Reassemble the mast extension cable system by
connecting the cable to the bottom of the upper mast
and sliding the upper mast into the opening of the
center mast. Connect the second cable to the bottom
of the center mast and slide the center mast into the
opening of the lower mast, observing proper lifting
techniques.
6. Route the upper mast cable through the center mast
pulley and connect the free end of the cable to the
lower mast ankle shackle. Route the center mast
cable through the lower mast pulley and connect the
free end of the cable to the hand winch at the bottom
of the lower mast.
7. Raise, extend, retract and lower the mast several times
to verify correct operation.