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Operation
Lowering the Mast—Electric
Winch (If Equipped)
Electrically Lowering the Mast
WARNING
Personal Injury. Stop immediately if the mast hangs
up or the winch cable develops slack. Excess slack
could cause the mast to collapse, resulting in personal
injury or equipment damage.
1. Shut down the lights and engine. See
Down the
Unit.
2. Press and hold the winch control switch downward
to collapse the mast to the lowest position. Verify
the electrical cord does not get caught in, or
pinched by, the mast while it is being lowered.
3. If the unit is going to be moved, rotate the mast so
the lights face the rear of the unit. To rotate the
mast:
a. Loosen the mast rotation knob.
b. Rotate the mast until the white arrows are
aligned and the metal stop tabs are touching.
c. Tighten the mast rotation knob.
IMPORTANT NOTE: Contact a GMP ASD immedi-
ately if the mast hangs up or the winch cable devel-
ops slack.
NOTE: If the generator is not operational, and the batter-
ies do not have enough power to lower the mast, it may
be necessary to lower the mast manually.
Manually Lowering the Mast
IMPORTANT NOTE: Do not use this procedure un-
less it is absolutely necessary. Frequent use of this
procedure could damage the motor shaft.
1. See
Figure
3-9. Remove the motor cover (A).
Figure 3-9. Manually Lowering the Mast
2. Attach a drill chuck firmly to the exposed motor
shaft (B).
36
3. Using the drill, slowly rotate the motor shaft
counterclockwise to lower mast.
4. Detach the drill chuck and install the motor cover
after the mast is completely lowered.
Towing the Unit
Once the engine is shut down and the mast and lights are
properly stowed, proceed as follows to prepare the unit
for towing.
1. Raise the outrigger jacks completely and release
(000265)
the locking pins to rotate them up into the travel
Shutting
position. Verify the locking pins snap into place.
Release the outrigger locking pins and slide the
outriggers into the trailer frame until the locking
pins snap into place.
2. Use the tongue jack to raise or lower the trailer
onto the hitch of the towing vehicle. Lock the hitch
coupling and attach the safety chains or cables to
the vehicle in a criss-cross pattern. Remove the
tongue jack locking pin and rotate the jack into the
travel position. Replace the locking pin.
3. Lubricate the grease fittings located on the leveling
jacks. Refer to
tenance interval information, refer to
tenance Schedule.
4. Connect any trailer wiring to the tow vehicle. Check
for proper operation of the directional and brake
lights.
5. Verify the enclosure is correctly latched.
6. Inspect for correct inflation of the trailer tires. For
maximum tire pressures, refer to
tion.
7. See
or replace any lugs that are loose or missing. If a
tire has been removed for axle service or replaced,
tighten the lugs in the order shown, to the following
specifications:
A
B
a. Start all lug nuts by hand.
002832
b. First pass: tighten to 20-25 ft-lbs (27-33 Nm).
c. Second pass: tighten to 50-60 ft-lbs (67-81 Nm).
d. Third pass: tighten to 90-120 ft-lbs (122-162 Nm).
Trailer Wheel Bearings.
Figure
3-10. Inspect the wheel lugs. Tighten
1
4
3
2
5
Figure 3-10. Tightening Wheel Lugs
Owner's Manual for MLT6SMD Light Tower
For main-
Basic Main-
General Informa-
00204
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