OM673L3
For Models: M673LD3, M673LD3G, M673L3
and M673L3G
OPERATOR’S MANUAL
www.northern-lights.com
Page 1: ...OM673L3 For Models M673LD3 M673LD3G M673L3 and M673L3G OPERATOR S MANUAL OPERATOR S MANUAL www northern lights com...
Page 2: ...o the outside Do not modify or tamper with the exhaust system Do not idle the engine except as necessary For more information go to www P65warnings ca gov diesel CALIFORNIA Proposition 65 Warning Nort...
Page 3: ...V Belts 17 Valve Clearances 17 Fuels General 18 SERVICING continued Fuel Filters 18 Cooling System General 19 Checking Coolant Level 19 Cooling System Flushing 19 Injector Service 20 Injection Pump 2...
Page 4: ...odel aspiration and RPM Unit Identification Your set has three serial numbers 1 an engine number stamped on the block 2 a generator plate and 3 a generator set plate Use the serial number on the gener...
Page 5: ...gns in good and clean condition Replace missing or damaged signs Be sure new equipment components and repair parts include the current safety signs For replacement signs proper placement of safety sig...
Page 6: ...il or debris Disconnect battery ground cable before making any adjustments or service work Handle Fuel Safely Avoid Flames WARNING Diesel is highly flammable and should be treated with care at all tim...
Page 7: ...open flame away from the top of battery When checking battery electrolyte level use a flashlight Safety Rules Continued Never check battery charge by contacting the posts with a metal object Use a vol...
Page 8: ...Handle Chemical Products Safely WARNING Direct exposure to hazardous chemicals can cause serious injury Among the potentially hazardous chemicals that may be used with Northern Lights products are lu...
Page 9: ...not use food or beverage containers that may mislead someone into drinking from them Do not pour waste onto the ground down a drain or into any water source Do Not Open High Pressure Fuel System DANGE...
Page 10: ...be achieved at the local supply valve shut off valves further back in the system and re check the bleed off point until complete shut off is achieved Affix a DO NOT OPERATE tag to each valve handle th...
Page 11: ...OM673L3 5 21 9 Notes...
Page 12: ...jector 10 Fuel injection pump 11 Fuel lift pump 12 Sea water pump 13 Lube oil drain 14 Oil fill side 15 Lube oil dipstick 16 Lube oil filter 22 Starter motor 23 Exhaust elbow 24 Vibration mount 25 DC...
Page 13: ...p 8 Generator End Cover 9 Vibration Mount 10 Starter Motor 11 DC Regulator 12 DC Alternator 13 Belt Guard 14 AVR Circuit Breaker 15 AC Circuit Breaker 23 Lube Oil Drain 24 Lube Oil Fill Side 25 Block...
Page 14: ...e switch and it will return to RUN position To stop the engine press the switch to the STOP position NOTE The rocker switch is used on Series 1 panels only and has a light that glows when the set is r...
Page 15: ...tion for 10 seconds before starting a cold engine Holding the switch too long can burn out the glow plugs 2 While holding the Shutdown Bypass Preheat switch in the ON position push the Engine Control...
Page 16: ...gine crankcase oil level c If the oil level is low fill with recommended lubricating oil and restart Watch the oil pressure gauge carefully and shut off the engine if it does not show a normal reading...
Page 17: ...heck primary fuel filter SP10 Check cooling water level AFTER FIRST 50 HOURS SP2 3 Change engine oil and filter AFTER FIRST 100 HOURS SP2 3 Change engine oil and filter EVERY 100 HOURS SP5 Check v bel...
Page 18: ...ld weather operation change oil every 100 hours or six weeks whichever comes first 4 Change oil at any seasonal change in temperature when a new viscosity of oil is required 5 Change oil when engine i...
Page 19: ...No 1 cylinder to top dead center in the compression stroke align the timing mark the top mark of the crank pulley with that of the timing gear case Remove the rocker arm cover and turn the crankshaft...
Page 20: ...tank at the end of each day s operation This will reduce condensation FUEL FILTERS 1 Your generator set should have a primary fuel filter installed We recommend the Racor brand of fuel filter water s...
Page 21: ...ter an opportunity to expand the level should be about 1 in 2 5 cm below the filler cap sealing surface when the engine is cold 2 The pressure valve in the filler cap releases when the pressure is app...
Page 22: ...cylinders 3 Injector installation a Install a new copper sealing washer in each injector hole Figure 19 b Screw in injector and tighten to 43 or 50 ft lbs 6 to 7 kgm Figure 20 NOTE Overtightening can...
Page 23: ...4 Remove delivery lines Figure 15 Cover lines inlets and injection pump outlets Figure 16 Remove return line nuts Figure 18 Unscrew injector Figure 19 Remove and replace copper sealing washer Figure 2...
Page 24: ...or other damage is noted replace the elbow GENERATOR ENDS The maintenance and operation recommendations for the generator end are located on pages 24 27 under the heading AC Generator ELECTRICAL SYST...
Page 25: ...dosed with either Stab il brand fuel system stabilizer diesel engine formula or Stanadyne Performance fuel system conditioner If neither of these fuel treatments is available you may also use John Dee...
Page 26: ...ocated in the control box Figure 25 Item 2 GENERATOR Figure 24 1 Stator Core 2 Stator Coil 3 End Cover 4 Brush 5 Ball Bearing 6 Slip Ring 7 Frame 8 Coupling Plate 9 Field Coil 10 Field Core 11 Shaft 1...
Page 27: ...al board to 240 Figure 28 Figure 28 Voltage Selector Terminal 240 Volt Output b Connect U2 to V1 on the output terminal board Figure 29 Figure 29 Output Terminal Board 240 Volt Output 3 120 240 Volt O...
Page 28: ...e output c Wiping is the only effective method for removing dust and foreign materials Use a clean lint free piece of cloth 3 If the generator has not been operated for an extended period of time chec...
Page 29: ...e generator b Brush assembly is black plastic with two wires leading to it It is located at ten o clock and is held in position by two screws Figure 34 Remove the screws and unplug leads Figure 34 Bru...
Page 30: ...eck specific gravity of each battery Check electrolyte level of each battery Defective electrical system Repair or replace ground wire Starter Cranks Slowly Low battery output Battery is too small Bat...
Page 31: ...requently Clogged primary or secondary Clean or replace primary filter element fuel filter element replace secondary filter element Water or dirt in the fuel system Drain flush fill and bleed system D...
Page 32: ...ow normal engine temperature Check your thermostats Check water temperature to see if temperature gauge is working properly Engine overheating See Engine Overheating section High Fuel Consumption Impr...
Page 33: ...ght Use proper viscosity oil Oil leaks Check for leaks in lines around gaskets and drain plug Engine Emits Black Clogged or dirty air cleaner Service air cleaner or Gray Exhaust Smoke Defective muffle...
Page 34: ...tely 1 The fuel system is self bleeding However any system may need manual bleeding when a A new fuel filter is installed b The engine has run out of fuel c The fuel lines injection pump or any other...
Page 35: ...28 5 in 724 mm 724 mm 724 mm 724 mm COOLING SYSTEM Approximate Cooling System Capacity 5 gal 5 gal 5 gal 5 gal 2 ltr 2 ltr 2 ltr 2 ltr Minimum Through Hull Diameter 0 75 in 0 75 in 0 75 in 0 75 in 19...
Page 36: ...OM673L3 5 21 34 AC Wiring Diagrams AC Wiring Diagram Taiyo TF276D with DST 61 DFN AVR Drawing B 10683C Updated 6 24 20...
Page 37: ...OM673L3 5 21 35 AC Wiring Diagrams AC Wiring Diagram TF276D Generator with DST 61 DFN AVR Drawing B 10968 Updated 6 24 20...
Page 38: ...OM673L3 5 21 36 AC Wiring Diagrams Updated 6 24 20 AC Wiring Diagram Taiyo TF276D 4 Lead Generator with DST 61 DFN AVR Drawing B 10669D...
Page 39: ...OM673L3 5 21 37 DC Wiring Diagrams Updated 6 24 20 DC Wiring Diagram M NL 673 12 VDC Standard Ground B Control w stop switch and leak alarm Drawing B 11455...
Page 40: ...OM673L3 5 21 38 DC Wiring Diagrams Updated 6 24 20 DC Wiring Diagram M NL 673 12 VDC Isolated Ground B Control w stop switch and leak alarm Drawing B 11472...
Page 41: ...OM673L3 5 21 39 Wiring Diagrams Updated 8 12 19 Panel Wiring Diagram S 1 Panel B Deutsch A 12798B...
Page 42: ...OM673L3 5 21 40 Wiring Diagrams Updated 6 2 17 Panel Wiring Diagram S 1B Panel B A 12791B...
Page 43: ...OM673L3 5 21 41 Wiring Diagrams Updated 6 24 20 Panel Wiring Diagram S 3B S 3C Panel Viewline B A 12790D...
Page 44: ...OM673L3 5 21 42 AC Wiring Diagrams AC Engine Wiring Diagram 100 120 200 240 VAC 50 60 Hz Drawing B 6103J Updated 6 22 11 NON CURRENT MODEL...
Page 45: ...OM673L3 5 21 43 AC Wiring Diagrams AC Engine Wiring Diagram 200 240 VAC Drawing B 6104F Updated 6 22 11 NON CURRENT MODEL...
Page 46: ...OM673L3 5 21 44 AC Wiring Diagrams AC Engine Wiring Diagram 120 VAC Drawing B 6105G Updated 4 9 12 NON CURRENT MODEL...
Page 47: ...OM673L3 5 21 45 DC Wiring Diagrams DC Engine Wiring Diagram 12 VDC Standard Ground Drawing B 9873 Updated 6 22 11 NON CURRENT MODEL...
Page 48: ...OM673L3 5 21 46 DC Wiring Diagrams DC Engine Wiring Diagram 12 VDC Isolated Ground Drawing B 8247A Updated 6 22 11 NON CURRENT MODEL...
Page 49: ...OM673L3 5 21 47 NON CURRENT MODEL DC Wiring Diagrams DC Engine Wiring Diagram 12 VDC Standard Ground B Control Drawing B 10750D Updated 6 25 20...
Page 50: ...OM673L3 5 21 48 NON CURRENT MODEL DC Wiring Diagrams Updated 6 25 20 DC Engine Wiring Diagram 12 VDC Isolated Ground B Control Drawing B 10966...
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Page 52: ...4420 14th Ave NW Seattle WA 98107 Tel 206 789 3880 1 800 762 0165 www northern lights com Northern Lights and Lugger are registered trademarks of Northern Lights Inc 2021 All rights reserved Litho USA...
