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Operation
6. When the mast is completely down, install the
winch motor assembly, securing it with the screws.
Towing the Unit
Once the engine is shut down and the mast and lights are
properly stowed, follow these steps to prepare the unit for
towing.
1. Raise the rear jack completely and release the
locking pin to rotate it up into the travel position.
Verify locking pin snaps into place.
2. Raise the outrigger jacks completely and release
the jack locking pin to swing the jacks up into the
travel 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.
3. 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. Remove the jack locking pin and rotate
the jack into the travel position. Replace the locking
pin.
NOTE: A film of grease on the coupler will extend
coupler life and eliminate squeaking. Wipe the coupler
clean and apply fresh grease each time the unit is towed.
4. To ensure proper operation of the jacks, lubricate
the grease fittings located on the leveling jacks.
Jack Maintenance.
Refer to
interval information, refer to
Schedule.
5. Connect any trailer wiring to the tow vehicle. Check
for proper operation of the directional and brake
lights.
6. Verify the mast cradle locking pin is in place.
7. Verify the doors and enclosure are properly
latched.
8. If driving over rough ground, remove the bulbs from
the light fixtures.
9. Check for proper inflation of the trailer tires. For
maximum tire pressures, refer to Specifications.
Figure
3-10. Check the wheel lugs. Tighten or
10. See
replace any lugs that are loose or missing. If a tire
has been removed for axle service or replaced,
18
For maintenance
Basic Maintenance
tighten the lugs, in the order shown, to the
following specifications:
4
Figure 3-10. Tightening Wheel Lugs
a. Start all lug nuts by hand.
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).
NOTE: After the first road use, re-torque the lug nuts in
sequence.
11. Maximum recommended speed for highway towing
is 45 mph (72 km/h). Recommended off-road
towing speed is not to exceed 10 mph (16 km/h) or
less, depending on the terrain.
Lifting the Unit
Follow these steps to prepare the unit for lifting:
1. Verify the equipment being used to lift the unit is in
good condition and has sufficient capacity. For
approximate weights, refer to Specifications.
Figure
3-11. Close and lock all hoods and
2. See
doors and stow the lights as shown.
3. Verify the cradle locking pin is in place.
4. When lifting the light tower and trailer, attach any
slings, chains or hooks directly to the central lifting
eye (A).
5. Always remain aware of people and objects around
the unit while preparing, maneuvering, and lifting
the unit.
6. Use the upper (B) or lower forklift pockets (C) with
care. Approach the unit as perpendicular as
possible to avoid any damage to the unit. Make
sure the mast winch handles or any other
obstructions are clear of the forklift tines before
lifting.
Owner's Manual for Mobile Light Tower
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Table of Contents
Troubleshooting
