OPERATION MANUAL NIGHTHAWK SERIES MODELS LT12D, LT12P DEDICATED LIGHT TOWER (DEUTZ F3M1008F DIESEL ENGINE) (LOMBARDINI LDW 1003 DIESEL ENGINE) (PERKINS 103-10 DIESEL ENGINE) Revision #12 (01/20/09) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
PROPOSITION 65 WARNING Diesel engine exhaust and some of PAGE 2 — LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV.
REPORTING SAFETY DEFECTS If you believe that your vehicle has a defect that could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying Multiquip at 1-800-421-1244. If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign.
TABLE OF CONTENTS LT12 Series Light Tower Proposition 65 Warning ........................................... 2 Reporting Safety Defects......................................... 3 Table Of Contents .................................................... 4 Safety Information .............................................. 5-12 Lamp Footcandle Plot ............................................ 13 Specifications ................................................... 14-15 Dimensions ...................................
SAFETY INFORMATION Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others. Potential hazards associated with the operation of this equipment will be referenced with hazard symbols which may appear throughout this manual in conjunction with safety messages.
SAFETY INFORMATION GENERAL SAFETY CAUTION NEVER operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations. NEVER operate this equipment when not feeling well due to fatigue, illness or when under medication. NEVER operate this equipment under the influence of drugs or alcohol.
SAFETY INFORMATION NEVER remove safety pin or pull mast locking pin while tower is in a raised position! LAMP SAFETY CHECK the mast and winch cables for wear. If any problem occurs when lower or raising the tower, STOP immediately! Contact a trained technician for assistance. NEVER attempt to replace lamp with the power on. Always shut down the engine or turn off circuit breakers when changing the lamp. NEVER pivot or retract mast while unit is operating.
SAFETY INFORMATION ENGINE SAFETY WARNING DO NOT place hands or fingers inside engine compartment when engine is running. NEVER operate the engine with heat shields or guards removed. Keep fingers, hands hair and clothing away from all moving parts to prevent injury. DO NOT remove the radiator cap while the engine is hot. High pressure boiling water will gush out of the radiator and severely scald any persons in the general area of the generator.
SAFETY INFORMATION FUEL SAFETY DANGER DO NOT start the engine near spilled fuel or combustible fluids. Diesel fuel is extremely flammable and its vapors can cause an explosion if ignited. ALWAYS refuel in a well-ventilated area, away from sparks and open flames. ALWAYS use extreme caution when working with flammable liquids. DO NOT fill the fuel tank while the engine is running or hot.
SAFETY INFORMATION If lifting through pockets, make sure forks of forklift are inserted in pockets as far as possible before lifting. TRANSPORTING SAFETY CAUTION Before lifting, make sure that light tower parts are not damaged and screws are not loosened or lost. ALWAYS make sure crane or lifting device has been properly secured to lifting hook of the equipment. NEVER lift the equipment while engine is running. Make sure the tower is in the stowed position before lifting.
SAFETY INFORMATION ELECTRICAL SAFETY DANGER The electrical voltage required to operate the generator can cause severe injury or even death through physical contact with live circuits. Turn generator and all circuit breakers OFF before performing maintenance on the generator. NEVER insert any objects into the output receptacles during operation. This is extremely dangerous. The possibility exists of electrical shock, electrocution or death.
SAFETY INFORMATION BATTERY SAFETY DANGER DO NOT drop the battery. There is a possibility that the battery will explode. DO NOT expose the battery to open flames, sparks, cigarettes, etc. The battery contains combustible gases and liquids. If these gases and liquids come into contact with a flame or spark, an explosion could occur. ENVIRONMENTAL SAFETY NOTICE Dispose of hazardous waste properly. Examples of potentially hazardous waste are used motor oil, fuel and fuel filters.
LAMP FOOTCANDLE PLOT Figure 1. Lamp Footcandle Plot LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV.
SPECIFICATIONS Table 1. LT12 Series Specifications Light Tower Model Engine Model Weight (Dry) Support Points Wind Stability with Genset. LT12D LT12P Deutz F3M1008F/ Lombardini LDW 1003 Diesel Engine Perkins 103-10 Diesel Engine 1,550 lbs. (700 kg.) 5 65 mph (80.
SPECIFICATIONS Table 2. Engine Specifications Engine Type Aspirated 4-stroke, 3-cylinder, 1 liter Diesel Engine Bore X Stroke 2.95 in. X 2.83 in. (75 mm x 72 mm) Displacement Max Output Standby 10.5 H.P. at 1,800 R.P.M. Fuel Tank Capacity Approx. 30 U.S. Gallons (113 Liters) Standard Idle Speed Fuel Type Lube Oil Capacity 64 Hours 1,800 R.P.M. N0. 2 Diesel Fuel 4 U.S. Pints (3.78 Liters) Cooling System Water-cooled Coolant Capacity 5 U.S. Pints (4.
DIMENSIONS DEPLOYED POSITION C STOWED POSITION D E F B A RIGHT SIDE G REAR Figure 2. Dimensions Table 3. Dimensions Reference Letter Description Dimension A Length (Mast Stowed Position) 170 in. (431 cm.) B Length (Mast Deployed Position) 101 in. (256 cm.) C Max. Height (Mast Deployed Position) 31.5 ft. (9.6 m) D Height (Mast Stowed Position) 74 in. (187 cm.) E Ground Clearance (From Axle) 8 in. (20 cm.) F Width (Tow Ready) 51 in. (129 cm.
GENERAL INFORMATION The Multiquip LT12 Series Light Tower is a dedicated general purpose light tower engineered to provide dependable lighting for a wide range of applications. This includes lighting for construction sites, industrial locations, special events, and emergency conditions. PANEL LIGHT METAL HALIDE LAMPS CONVENIENCE RECEPTACLES The lighting system of the LT12 Series Light Tower is comprised of 4 metal halide, 1000-watt lamps.
COMPONENTS 1 4 2 5 7 9 3 6 17 15 14 13 16 8 10 18 12 18 11 Figure 3. Major Components (Control Panel Side) Figures 3 and 4 show the location of the controls and components for the LT12 series light tower. The function of each control is described below. 1. Mast Rotation Locking Knob — Unscrew this knob to release mast for rotation. Tighten this knob to lock mast after it is set to the desired position. 2. Mast Extension Winch — Use this winch to extend the mast to the desired height.
COMPONENTS 19 24 23 25 20 21 22 REAR VIEW FRONT VIEW Figure 4. Major Components (Front/Rear) 14. Safety Chain — Always attach safety chain to the towing vehicle. Never tow the light tower with the safety chain unattached. 15. Ball Hitch Coupler — Attach this coupler to the towing vehicle. Use only the specified ball diameter as indicated on your coupler. Use of any other ball diameter will create an extremely dangerous condition which can result in separation of the coupler and ball or ball failure.
CONTROL PANEL 5 4 1 240 VAC/30A MAIN BREAKER 240 VAC/30A MAIN BREAKER 120 VAC/15A GFCI BREAKER SenDEC 3 120 VAC/15A GFCI BREAKER SenDEC 3 0.0 HOURS HOURS 5 4 1 1/10 1/10 2 0.
CONTROL PANEL Figure 5 shows the location of the controls and indicators on the control panel for the different engines used with the LT12 light tower. Service the equipment as needed depending on the alarm indicated. Below is a brief explanation of each control or indicator. 1. Internal Cabinet Light Switch — This switch controls the internal cabinet light for the light tower control panel. When the cabinet door is raised, the light will automatically come on.
INSPECTION BEFORE STARTING 1. Read all safety instructions at the beginning of manual. between the two notches as shown in Figure 6. Always fill with recommended type oil as listed in Tables 4 and 5. See Table 2 for engine oil capacity. 2. Clean the light tower, removing dirt and dust, particularly the engine cooling air inlet and air cleaner. 3. Check the air filter for dirt and dust. If air filter is dirty, replace air filter with a new one as required. 4.
INSPECTION FUEL CHECK CAUTION Diesel fuel and its vapors are dangerous to your health and the surrounding environment. Avoid skin contact and/or inhaling fumes. DO NOT smoke while refueling. DO NOT attempt to refuel the light tower if the engine is hot or running. 1. To check the engine fuel level, make sure the light tower is placed on secure level ground with the engine stopped. BATTERY CHECK WARNING The operator must wear the appropriate protective equipment and clothing while handling the battery.
INSPECTION WARNING When connecting the positive (+) cable to the battery's positive (+) terminal post, DO NOT allow the wrench or any metallic part to come in contact with the battery's negative (-) terminal post. This may result in an electrical short circuit or an explosion. Table 7. Anti-Freeze Operating Temperatures Freezing Point Boiling Point °C °F °C °F 40 -24 -12 106 222 50 -37 -34 108 226 Vol (%) Anti-Freeze NOTICE Use only distilled water in the battery.
INSPECTION WARNING The engine's exhaust contains harmful emissions. ALWAYS ventilate the exhaust when operating inside tunnels, excavations or buildings. Direct exhaust away from nearby personnel. a. Locate the 4 key-lock female 3-pin DIN connectors on the T-bar. See Figure 10. KEY-LOCK FEMALE CONNECTORS Before starting the engine, make sure of the following: The electrical load is disconnected and the main circuit breaker and all lamp (4) circuit breakers are switched to the OFF position. Figure 10.
OPERATION STARTING THE ENGINE Starting the Engine (Lombardini/Deutz Engines) The LT12 Series Light Tower is available with two types of engines (Perkins or Lombardini/Deutz). The engine starting procedure for both engines are described below. 1. Open the access panel door on the right side of the light tower (opposite the fuel tank). Set the door latch in place to hold the door open (up). Starting the Engine (Perkins) 2. Insert the ignition key into the ignition key switch (Figure 15).
OPERATION MAST OPERATION DANGER ALWAYS make sure the area above light tower is open and clear of overhead power lines and other obstructions. The tower extends in excess of 30 feet (9 meters). Contact with overhead power lines or other obstructions could result in equipment damage, serious injury or death! DANGER 2. As soon as the pin clears the travel position hole, release it and continue sliding out the outrigger. The pin must snap into the outrigger locking hole in the extended position. 3.
OPERATION RETAINING PIN MAST CRADLE SUPPORT CRADLE LOCK/ RELEASE PIN MAST EXTENSION WINCH VERTICAL MAST WINCH MAST LOCK/ RELEASE PIN MAST LOCK HANDLE MAST ROTATION HANDLES MAST ROTATION LOCKING KNOB ROTATING THE MAST Figure 17. Mast Operation PAGE 28 — LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV.
OPERATION Lowering the Mast TURNING ON THE LAMPS 1. Turn the mast extension winch counterclockwise, and observe that the mast begins to lower. The main circuit breaker (25 amps) and 4 lamp circuit breakers (10 amps each) are located on the upper control panel (Figure 18). Each lamp has a 10-amp circuit breaker. 2. Continue turning the winch counterclockwise until the mast has been fully retracted (slack in the cable). Stowing the Mast to Horizontal Position 1.
OPERATION APPLYING AN EXTERNAL LOAD NORMAL SHUTDOWN The light tower is equipped with two auxiliary output receptacles (Figure 19). The uppermost receptacle (twistlock) located at the front of the light tower can provide 240 VAC at 25 amps. The bottom receptacle is a GFCI receptacle which can supply 120 VAC at 15 amps. 1. If a load is attached to the generator of the light tower, remove the load. 2. Set the four lamp circuit breakers on the control panel to the OFF position. 3.
MAINTENANCE BASIC INSPECTION AND MAINTENANCE See Table 8 below for a general inspection and maintenance checklist. For more detailed maintenance, refer to the engine service manual. Table 8.
MAINTENANCE GENERAL INSPECTION Prior to each use, the light tower should be cleaned and inspected for deficiencies. Check for loose, missing or damaged nuts, bolts or other fasteners. Also check for fuel or oil leaks. starting becomes impossible. After running out of fuel, or after disassembling the fuel system, bleed the system. To restart after running out of fuel, squeeze the fuel primer bulb to pump fuel into the engine. This unit is equipped with an automatic air bleeding system.
MAINTENANCE 5. When the water level is near the mouth of the water filler, open drain plugs and start the engine, and run at low idling. Keep the engine running at low idling and flush the radiator for about 10 minutes. 6. Adjust the flow of the water flowing in and draining out to ensure that the radiator is always full during the flushing operation. While flushing water through the system, make sure the water inlet hose does not come out of the radiator filler port. 7.
MAINTENANCE REPLACING FUEL FILTER SERVICINGTHE MAST RAISE/LOWER CABLE SYSTEM: 1. Set the container under the filter cartridge to catch fuel. To replace any components in the mast raise/lower cable system, use the following steps (See Figure 21): 2. Using a filter wrench, turn the filter cartridge to the left to remove it. 3. Clean the filter holder, fill the new filter cartridge with fuel, coat the packing surface of the filter cartridge with engine oil, then install the cartridge to the filter holder.
MAINTENANCE 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. WARNING The mast sections are heavy and awkward to handle.
MAINTENANCE — TRAILERS The following trailer maintenance guidelines are intended to assist the operator in preventive maintenance. Follow the steps below to disassemble the wheel hub and service the wheel bearings. See Figure 24. BEARING ADJUSTABLE CHANNEL Your trailer may be equipped with an adjustable channel (Figure 23) that allows the coupler to be raised or lowered to a desired height. Periodically check the channel bolts for damage or loosening.
MAINTENANCE — TRAILERS DANGER NEVER crawl under the trailer unless it is on firm and level ground and resting on properly placed and secured jackstands. The possibility exists of the trailer falling thus causing equipment damage and severe bodily harm even death! LEAF SUSPENSION The leaf suspension springs and associated components (Figure 25) should be visually inspected every 6,000 miles for signs of excessive wear, elongation of bolt holes, and loosening of fasteners.
TROUBLESHOOTING Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take remedial action following the diagnosis based on the troubleshooting tables. If the problem cannot be remedied, please leave the unit as is and consult Multiquip's technical support department or your local dealer.
TROUBLESHOOTING Table 10. Engine Troubleshooting Symptom Engine does not start. Starter does not run. Possible Cause Solution No fuel? Replenish fuel. Air in the fuel system? Bleed system. Water in the fuel system? Remove water from fuel tank. Fuel pipe clogged? Clean fuel pipe. Fuel filter clogged? Clean or change fuel filter. Excessively high viscosity of fuel or engine oil at low temperature? Use the specified fuel or engine oil. Fuel with low cetane number? Use the specified fuel.
TROUBLESHOOTING Table 10. Engine Troubleshooting (continued) Symptom Engine revolution is not smooth. Either white or blue exhaust gas is observed. Either black or dark gray exhaust gas is observed. Deficient output. Possible Cause Solution Fuel filter clogged or dirty? Clean or change. Air cleaner clogged? Clean or change. Fuel leak due to loose injection pipe retaining nut? Tighten nut. Injection pump malfunctioning? Repair or replace. Incorrect nozzle opening pressure? Adjust.
TROUBLESHOOTING Table 11. Lamp Troubleshooting Symptom Possible Cause Lamp Burned Out? Test the lamp in a fixture which is operating properly. Replace if necessary. Lamp Loose in Socket? Inspect lamp base to see if there is arcing at center contact button. Tighten lamp snugly. Check socket for damage. Replace if defective. Lamp Plugs Not Tight? Check plug and receptacle. Tighten if loose. Defective Ballast? Interchange ballast plugs in generator enclosure. If lamp starts, replace ballast.
TROUBLESHOOTING Table 11. Lamp Troubleshooting (continued) Symptom Possible Cause Solution Lamp starts slowly (ARC does not strike when switch is first turned on) Defective Lamp? Lamp may glow for extended period of time. Replace after checking voltage and ballast. Circuit breaker trips on lamp start-up Short Circuit or Ground? Check wiring against diagram. Check for shorts or ground. Normal Lamp Depreciation? Replace Lamp. Dirty Lamp or Fixture? Clean lamp and fixture.
TROUBLESHOOTING LAMP TROUBLESHOOTING GUIDE Use the following procedure and wiring diagrams on the next pages to determine which of the four lamps is not functioning: Connections 1. Make sure that lamp #1 power cable is plugged into the J1 connector on the T-Bar assembly. 2. Make sure that lamp #2 power cable is plugged into the J2 connector on the T-Bar assembly. 3. Make sure that lamp #3 power cable is plugged into the J3 connector on the T-Bar assembly. 4.
LT12 WIRING DIAGRAM — S/N 902148 AND BELOW ROTOR STATOR BLACK 1 LINE 1 120 VAC 60 HZ GREEN 2 ROTOR WINDINGS NEUTRAL 240 VAC 60 HZ FIXED FLOW CURRENT DIODE STATOR WINDING JUMPER WHITE 120 VAC 60 HZ 4 RED 5 LINE 2 EXCITATION WINDING BLK 60 HZ 50 HZ GRN WHT RED 4 3 2 1 RED C1 36µF@425V EXCITATION CAPACITOR TB1 GENERATOR TERMINAL BOARD GRN RED BLK RED 5 1 WHT 4 WHT U1 W2 GRN BLK U2 2 V1 V2 3 CHASSIS GND W1 6 B WHT C 1 5V 42 F@ N 35µ ITATIO C OR X E CIT A CAP BLK BLK
LT12 WIRING DIAGRAM — S/N 902148 AND BELOW NOTES: A J1 J2 BLK WHT BLK BLK WHT B 6-WIRE COIL CORD P/N 19955. J4 J3 BLK WHT S/N 902625 AND BELOW USE ONLY SCREW TYPE CIRCUIT BREAKERS. INSTALLED ON UNITS S/N 905512 AND BELOW. WHT C WIRE SIZE IS 12 AWG UNLESS OTHERWISE SPECIFIED. GRN T-BAR ASSEMBLY P/N 19954 D BLK BLK 16 AWG BLK BLK 16 AWG B BLK 16 AWG BLK BLK 16 AWG BLK WHT 14 AWG WHT GRN 16 AWG SOME UNITS MAY HAVE A 47KW ½ WATT RESISTOR INSTALLED ACROSS THE CAPACITOR TERMINALS.
LT12 WIRING DIAGRAM — S/N 902149 TO 902625 ROTOR STATOR BLACK 4 BLACK 3 BLACK 2 BLACK 1 120 VAC 60 HZ ROTOR WINDINGS 240 VAC 60 HZ FIXED FLOW CURRENT DIODE STATOR WINDING 120 VAC 60 HZ EXCITATION WINDING BLK 60 HZ 50 HZ GRN WHT RED 4 3 2 1 RED C1 25µF@425V EXCITATION CAPACITOR 111111 22222 44444 33333 TB1 BLK BLK BLK BLK A B RED RED C1 5V 42 F@ N 25µ ITATIO R EXC ACITO P CA NOTES STARTING WITH S/N 902149 AND ABOVE A USE ONLY 60 Hz GENERATOR, P/N 29895.
LT12 WIRING DIAGRAM — S/N 902149 TO 902625 NOTES: A J1 J2 BLK WHT BLK BLK WHT B 6-WIRE COIL CORD P/N 19955. J4 J3 BLK WHT S/N 902625 AND BELOW USE ONLY SCREW TYPE CIRCUIT BREAKERS. INSTALLED ON UNITS S/N 905512 AND BELOW. WHT C WIRE SIZE IS 12 AWG UNLESS OTHERWISE SPECIFIED. GRN T-BAR ASSEMBLY P/N 19954 D BLK BLK 16 AWG BLK BLK 16 AWG B BLK 16 AWG BLK BLK 16 AWG BLK WHT 14 AWG WHT GRN 16 AWG SOME UNITS MAY HAVE A 47KW ½ WATT RESISTOR INSTALLED ACROSS THE CAPACITOR TERMINALS.
LT12 WIRING DIAGRAM — S/N 902626 AND ABOVE ROTOR STATOR BLACK 4 BLACK 3 BLACK 2 BLACK 1 120 VAC 60 HZ ROTOR WINDINGS 240 VAC 60 HZ FIXED FLOW CURRENT DIODE STATOR WINDING 120 VAC 60 HZ EXCITATION WINDING BLK 60 HZ 50 HZ GRN WHT RED 4 3 2 1 RED C1 25µF@425V EXCITATION CAPACITOR 111111 22222 44444 33333 TB1 BLK BLK BLK BLK A B RED RED C1 5V 42 F@ N 25µ ITATIO R EXC ACITO P CA NOTES STARTING WITH S/N 902149 AND ABOVE A USE ONLY 60 Hz GENERATOR, P/N 29895.
LT12 WIRING DIAGRAM — S/N 902626 AND ABOVE NOTES: STARTING WITH S/N 902626 A AND ABOVE USE ONLY SNAP FIT CIRCUIT BREAKERS. B 7-WIRE COIL CORD P/N 29433 J1 J2 BLK BRN BLUE RED BRN REPLACES 6-WIRE COIL CORD P/N 19955. S/N 905513 AND ABOVE. J4 J3 YEL WHT WHT C WIRE SIZE IS 12 AWG UNLESS OTHERWISE SPECIFIED. GRN T-BAR ASSEMBLY P/N 19954 D BLK BLK 16AWG BLUE BLUE 16 AWG B RED 16 AWG SOME UNITS MAY HAVE A 47KW ½ WATT RESISTOR INSTALLED ACROSS THE CAPACITOR TERMINALS.
PERKINS ENGINE WIRING DIAGRAM PAGE 50 — LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV.
DEUTZ ENGINE WIRING DIAGRAM LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV.
LT12 CONTROL PANEL/IGNITION WIRING DIAGRAM Operating voltage: 10 to 16 VDC (30VDC max 10 sec.) A B DEUTZ/LOMBARDINI SPECIFIC DOOR SWITCH PANEL LIGHT A USE BULLET QUICK CONNECT 16G BLACK (12") 16G BLACK (6") 16G L BLUE TO KEY SWITCH B 16G BLUE (10") 16G GREEN (4.
TRAILER GUIDELINES The following guidelines are intended to assist the operator in the operation and handling of a trailer. Shift your automatic transmission into a lower gear for city driving. Safety precautions should be followed at all times when operating a trailer. Failure to read, understand and follow the safety guidelines could result in injury to yourself and others. Loss of control of the trailer or tow vehicle can result in death or serious injury.
TRAILER GUIDELINES DRIVING CONDITIONS When towing a trailer, you will have decreased acceleration, increased stopping distance, and increased turning radius (which means you must make wider turns to keep from hitting curbs, vehicles, and anything else that is on the inside corner). In addition, you will need a longer distance to pass, due to slower acceleration and increased length. Be alert for slippery conditions.
TRAILER GUIDELINES INOPERABLE BRAKES, LIGHTS OR MIRRORS Be sure that the brakes and all of the lights on your trailer are functioning properly before towing your trailer. Check the trailer taillights by turning on your tow vehicle headlights. Check the trailer brake lights by having someone step on the tow vehicle brake pedal while you look at trailer lights. Do the same thing to check the turn signal lights. See Trailer Wiring Diagram section in this manual.
TRAILER GUIDELINES To determine the “empty” or “net” weight of your trailer, weigh it on an axle scale. To find the weight of the trailer using an axle scale, you must know the axle weights of your tow vehicle without the trailer coupled. Some of the trailer weight will be transferred from the trailer to the tow vehicle axles, and an axle scale weighs all axles, including the tow vehicle axles. VIN TAG VIN TAG Figure B.
TRAILER GUIDELINES SAFETY CHAINS If the coupler connection comes loose, the safety chains can keep the trailer attached to the tow vehicle. With properly rigged safety chains, it is possible to keep the tongue of the trailer from digging into the road pavement, even if the coupler-to-hitch connection comes apart. JACKSTAND A device on the trailer that is used to raise and lower the coupler. The jack is sometimes called the “landing gear” or the “tongue jack”.
TRAILER GUIDELINES WARNING Lower the trailer (Figure D) until the coupler fully engages the hitch ball. A worn, cracked or corroded hitch ball can fail while towing and may result in death or serious injury. 2-INCH TRAILER COUPLER TOW VEHICLE Before coupling trailer, inspect the hitch ball for wear, corrosion and cracks. Replace worn or damaged hitch ball. 2-INCH BALL WARNING A loose hitchball nut can result in uncoupling, leading to death or serious injury.
TRAILER GUIDELINES Attaching Safety Chain Backup Lights (place tow vehicle gear shift in reverse). Visually inspect the safety chains and hooks for wear or damage. Replace worn or damaged safety chains and hooks before towing. Turn Signals (activate tow vehicle directional signal lever). Attach the safety chains so that they: • Cross underneath the coupler. See Figure E.
TRAILER GUIDELINES PINTLE HITCH COUPLER A pintle eye coupler (Figure F) connects to a pintle-hook hitch that is located on or under the rear bumper of the tow vehicle. This system of coupling a trailer to a tow vehicle is sometimes referred to as a “lunette eye, tow ring or G.I. hitch.
TRAILER GUIDELINES Raise the bottom surface of the coupler to be above the top of the pintle hitch hook. Use the tongue jackstand to support the trailer tongue. Wood or concrete blocks may also be used. WARNING Lower the trailer so that its entire tongue weight is held by the hitch. Raise the jackstand to a height where it will not interfere with the road. TIRE SAFETY A defective pintle hitch not properly fastened can result in uncoupling, leading to death or serious injury.
TRAILER GUIDELINES wrench, use a lug wrench (from your tow vehicle) and tighten the nuts as much as you can. Then have a service garage or trailer dealer tighten the lug nuts to the proper torque. WARNING Metal creep between the wheel rim and lug nuts will cause rim to loosen and could result in a wheel coming off, leading to death or serious injury. Tighten lug nuts before each tow. Lug nuts are also prone to loosen after first being assembled.
TRAILER GUIDELINES Step 2. Determine the weight of the equipment being loaded on the tow vehicle. That weight may not safely exceed the available equipment load capacity. The trailer’s Tire Information Placard is attached adjacent to or near the trailer’s VIN (Certification) label at the left front of the trailer (See Figure I). along with other care and maintenance activities, can also: Locate the statement, “The combined weight of occupants and cargo should never exceed XXX lbs.
TRAILER GUIDELINES Next number: This two-digit number is the wheel or rim diameter in inches. If you change your wheel size, you will have to purchase new tires to match the new wheel diameter. in the tire. In general, the greater the number of plies, the more weight a tire can support. Tire manufacturers also must indicate the materials in the tire, which include steel, nylon, polyester, and others. Next number: This two- or three-digit number is the tire’s load index.
TRAILER GUIDELINES Tires for light trucks have other markings besides those found on the sidewalls of passenger tires. LT: The “LT” indicates the tire is for light trucks or trailers. ST: An “ST” is an indication the tire is for trailer use only. Max. Load Dual kg (lbs) at kPa (psi) Cold: This information indicates the maximum load and tire pressure when the tire is used as a dual, that is, when four tires are put on each rear axle (a total of six or more tires on the vehicle). Max.
TRAILER GUIDELINES Wheel Rims If the trailer has been struck, or impacted, on or near the wheels, or if the trailer has struck a curb, inspect the rims for damage (i.e. being out of round); and replace any damaged wheel. Inspect the wheels for damage every year, even if no obvious impact has occurred. 3.
TRAILER GUIDELINES Figure L. Trailer to Tow Vehicle Wiring Diagram LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV.
OPERATION MANUAL HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING UNITED STATES Multiquip Corporate Office 18910 Wilmington Ave. Carson, CA 90746 Contact: mq@multiquip.com MQ Parts Department Tel. (800) 421-1244 Fax (800) 537-3927 Mayco Parts 800-427-1244 310-537-3700 Fax: 800-672-7877 Fax: 310-637-3284 Warranty Department 800-306-2926 310-537-3700 Fax: 800-672-7877 Fax: 310-637-3284 Service Department 800-421-1244, Ext. 279 310-537-3700, Ext.