Product Manual
Table Of Contents
- Introduction
- Table of Contents
- Safety Notes
- Operating Safety
- Engine Safety
- Service Safety
- Towing Safety
- Reporting Trailer Safety Defects
- Safety Symbol Summary
- Specifications - MLT4150MV, MLT4200IV
- Specifications - MLT4200IVCAN
- Unit Dimensions
- Unit Serial Number Locations
- Component Locations
- Light Tower Set Up
- Raising the Mast
- Main Control Panel
- Prestart Checklist
- Emergency Stop Switch
- Starting the Unit
- Automatic Shutdown
- Light Operation
- Voltage Regulation
- Derating for Altitude
- Wet Stacking
- Receptacle Panel
- Shutting Down the Unit
- Lowering the Mast
- Removing the Lights for Transportation
- Towing the Unit
- Lifting the Unit
- General Maintenance
- Basic Maintenance Schedule - Mitsubishi Engine
- Basic Maintenance Schedule - Isuzu Engine
- Winch Use, Operation & Maintenance
- Jack Maintenance
- Trailer Wheel Bearings
- Lower Radiator Hose Heater Option - Use and Maintenance
- Troubleshooting the Lights
- Mast Light Connections
- AC Wiring Diagram
- AC Wiring Diagram - Receptacle Panel
- AC Wiring Diagram - Receptacle Panel Options (1 of 2)
- AC Wiring Diagram - Receptacle Panel Options (2 of 2)
- DC Wiring Diagram
- DC Wiring Diagram - Electric Winch
- DC Wiring Diagrams for Optional Equipment
- Trailer Lights Wiring Diagram
- Service Log
21
MANUALLY LOWERING THE MAST
Do not use this procedure unless it is absolutely necessary. Continuous use of this procedure
could damage the planetary gear brake of the winch. This procedure will not work if the
planetary gear brake is damaged.
1. Remove the power cables from the two terminals on
the winch motor assembly (A).
2. Remove the two flange head screws (B) securing the
winch motor assembly to the winch. Retain the
screws for reassembly.
3. Carefully remove the motor assembly (C), making
sure the two pieces do not separate.
4. Insert a 3/8” allen head wrench (D) into the sleeve
bearing.
5. Rotate the wrench counter-clockwise to lower the
mast. If any slack is observed in the cable, stop immediately and remove the slack.
6. When the mast is completely down, reinstall the winch motor assembly, securing it with the screws retained in
step 2.
REMOVING THE LIGHTS FOR TRANSPORTATION
1. On units equipped with quick disconnect fittings for the lights, disconnect the power
cords from the junction box at the top of the mast. Replace the dust caps on the
junction box. On hard wired units, remove the junction box cover, located on the
top of the mast, and disconnect ONLY the mast light wires from the connectors.
To release the mast light wires from the connectors, flip the locking levers down
and pull out the appropriate wires.
2. Remove the lights by removing the wing nut that holds the light fixture bracket to
the cross tube. Attach the lights to the storage brackets (if equipped) located on
the mast tube on either side of the central lift point.
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. Make sure the
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.
Make sure 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.
B
A
AC
D
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