Operation
18
MLT4060-80M/K Operating Manual
10454 O
WARNING
Never raise or lower the mast while the unit is operating. Never remove the safety pin
or release the mast lock while the mast is up. Releasing the lock will cause the mast
to fall.
RAISING THE MAST WITH ELECTRIC WINCH OPTION
1. Set up and level the unit. Refer to
.
WARNING
The unit must be leveled with
the outriggers extended before
raising the mast. The
outriggers must remain
extended while the mast is up.
Failure to level the unit or
extend the outriggers will
severely reduce the stability
and could allow the unit to tip
and fall.
2. Remove mast cradle locking pin from mast cra-
dle (A).
3. Check the mast cables for excessive wear or
damage. Make sure the cables are properly cen-
tered in each pulley (B). Check the electrical
cord for damage.
WARNING
Do not start the unit if
insulation on the electrical
cord is cut or worn through.
Bare wires in contact with the
mast or frame may energize the
unit and cause electrocution.
Repair or replace a damaged
cord.
4. Make sure the area around the unit is clear
before raising the mast to the vertical position.
Figure 8 - Raising the Mast - Electric Winch
5. Remove the safety pin from the mast lock bar (C). Press the lower winch control switch (D) upward to raise
the mast into the vertical position. Hold the switch until the mast lock is engaged. The mast lock bar should
snap into place automatically. Secure the lock with the safety pin (E).
Note:
A limit switch on the mast tube will disconnect power to the lower electric winch to prevent deadheading the
winch.
6. Press and hold the upper winch control switch (F) upward to telescope the mast to the desired height.
Extend the mast, making sure that the coiled electrical cord is extending at the top sections of the mast. If,
for any reason, the winch cable begins to develop slack or any of the mast sections get stuck,
STOP IMME-
DIATELY
and contact an authorized service center.
G
B
B
A
F
D
C,E H
DETAIL C
DETAIL D
DETAIL E
DETAIL F
STOP
DETAIL G
DETAIL H
00188
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