ONL673L
For Model: NL673L
OPERATOR’S MANUAL
Marine Generators | Marine Diesel Engines | Land-Based Generators
Page 1: ...ONL673L For Model NL673L OPERATOR S MANUAL Marine Generators Marine Diesel Engines Land Based Generators...
Page 2: ...PART NO ONL673L 7 13 As of January 2011 U S EPA regulations require the application of a permanently applied label near the fuel tank fill port for diesel driven equipment This label is to state ULTRA...
Page 3: ...Retightening Cylinder Head Bolts 18 Valve Clearances 18 Fuels General 19 SERVICING CONTINUED Fuel Filters 19 Bleeding the Fuel System 20 Injector Service 21 22 Injection Pump 22 Cooling System General...
Page 4: ...reader into an expert mechanic Its aim is to aid you in maintaining your unit properly Introduction NL Northern Lights industrial generator set Model number of engine block Bore Cylinders 67 mm 3 Ser...
Page 5: ...this manual and on your machine s safety signs Keep signs in good and clean condition Replace missing or damaged signs Be sure new equipment components and repair parts include the current safety sig...
Page 6: ...ving parts have stopped before making any adjustments connections or performing any other type of service to the engine or other driven equipment Prevent accidental discharge of starting fluids by sto...
Page 7: ...olyte is poisonous and strong enough to burn skin eat holes into clothing and other materials and cause blindness if splashed into eyes To Avoid Hazards Fill batteries only in well ventilated areas We...
Page 8: ...ilated Dispose of paint and solvent properly Service Cooling System Safely Opening a pressurized cooling system can release explosive fluids and causing serious burns Before opening any pressurized co...
Page 9: ...source components between the high pressure fuel pump and nozzles on engines with high pressure fuel systems ONLY AUTHORIZED TECHNICIANS CAN PERFORM REPAIRS ON AN HIGH PRESSURE FUEL INJECTION SYSTEMS...
Page 10: ...ter or other material cannot 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 OPERAT...
Page 11: ...ONL673L 7 13 9 Notes...
Page 12: ...Drain 15 Lube Oil Dipstick 16 Lube Oil Filter 17 Lube Oil Drain 18 Secondary Fuel Filter 7 Air Filter 8 DC Circuit Breaker 9 Bleed Screw 10 Fuel Injector 11 Coolant Fill 12 Fuel Injection Pump 19 Fuel...
Page 13: ...he engine starts release the switch and it will return to RUN position To stop the engine hold the switch in the STOP position NOTE The rocker switch is used on Series 1 panels only and has a light th...
Page 14: ...D C VOLTMETER When the engine is running the voltmeter indicates the voltage output of the alternator 6 STATUS INDICATOR PANEL Engine monitoring alarms and lamps for monitoring engine functions 7 ALA...
Page 15: ...ty of oil as is already in the crankcase 3 Check the fuel tank level and open any fuel valves STARTING FOR S 1 S 1B S3 AND S4 SEE PAGE 6 FOR S7 1 Hold the Shutdown Bypass Preheat switch in the ON posi...
Page 16: ...5 F 107 C d Watch the temperature gauge regularly and turn off the unit if the temperature rises above 230 F 110 C on Industrial sets Repeat troubleshooting 3 If shutdown is activated and the temperat...
Page 17: ...detailed coverage of each Service Point SP is listed on the page noted in the page column DAILY SP1 Check oil level in engine SP5 Check V belt tension SP7 Check primary fuel filter SP13 Check coolant...
Page 18: ...ONL673L 7 13 16 Service Record Notes...
Page 19: ...ather 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 is war...
Page 20: ...to press on the belt at the midpoint between the crankshaft and alternator pulleys The tension is correct if the belt can be depressed about 3 16 in 5 mm Figure 10 Valve Adjustment SP6 VALVE CLEARANCE...
Page 21: ...iods of time c Fill the fuel tank at the end of each day s operation This will reduce condensation SP7 9 FUEL FILTERS 1 Your generator set should have a primary fuel filter installed We recommend the...
Page 22: ...isn t adminis tered immediately 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 i...
Page 23: ...elivery lines Figure 14 Cover lines inlets and injection pump outlets Figure 15 Remove return line nuts Figure 17 Unscrew injector Figure 18 Remove and replace copper sealing washer Figure 19 Reinstal...
Page 24: ...ighten lines at injectors Start engine and check for leaks using a piece of paper or cardboard DO NOT use hand to check for leaks SP12 INJECTION PUMP 1 Since operating conditions may vary considerably...
Page 25: ...debris from radiator fins daily 2 In very dusty applications clean the radiator with compressed air or steam cleaner every 100 hours Clean in the reverse direction of the airflow GENERATOR ENDS The ma...
Page 26: ...ions SP 18 19 BATTERY CARE 1 Check electrolyte level every 50 hours or once per month Add distilled water to manufacturer s recom mended level 2 Batteries cables and cable terminals should be checked...
Page 27: ...located in the control box Figure 24 Item 2 GENERATOR Figure 23 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...
Page 28: ...nal board to 240 Figure 27 Figure 27 Control Terminal Board 240 Volt Output b Connect U2 to V1 on the output terminal board Figure 28 also see page 31 Figure 28 Output Terminal Board 240 Volt Output 3...
Page 29: ...g voltage 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 t...
Page 30: ...move four screws and end cover of the generator b Brush assembly is white plastic with two wires leading to it It is located at ten o clock and is held in position by two screws Figure 33 Remove the s...
Page 31: ...n Low battery output Check 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 B...
Page 32: ...rature Remove and check thermostat or Stalls Frequently Clogged primary Clean or replace filter element fuel filter element Clogged secondary Replace secondary filter element fuel filter element Water...
Page 33: ...rature to see if temperature gauge is working properly Engine overheating See Engine Overheating section High Fuel Consumption Improper type of fuel Use correct fuel for temperature Clogged or dirty a...
Page 34: ...ir cleaner or Gray Exhaust Smoke Defective muffler Have dealer check back pressure back pressure too high Improper fuel Use correct fuel for temperature Injection nozzles dirty See your dealer Engine...
Page 35: ...r 0 761 ltr Bore 2 64 in 2 64 in 67 mm 67 mm Stroke 2 83 in 2 83 in 72 mm 72 mm Horsepower 1800 RPM 9 9 8 5 Approximate Fuel Rate Rated Speed with Full Load 0 59 gal hr 0 49 gal hr 2 4 ltr hr 1 9 ltr...
Page 36: ...ONL673L 7 13 34 DC Wiring Diagrams DC Engine Wiring Diagram Drawing B 6102J Wiring diagrams are subject to change without notice...
Page 37: ...ONL673L 7 13 35 AC Wiring Diagrams AC Wiring Diagram Drawing B 6105D Wiring diagrams are subject to change without notice...
Page 38: ...ONL673L 7 13 36 AC Wiring Diagram Drawing B 6103G Wiring diagrams are subject to change without notice AC Wiring Diagrams...
Page 39: ...ONL673L 7 13 37 AC Wiring Diagrams AC Wiring Diagram Drawing B 6104E Wiring diagrams are subject to change without notice...
Page 40: ...ern lights com 4420 14th Ave NW Seattle WA 98107 Tel 206 789 3880 1 800 762 0165 Fax 206 782 5455 Northern Lights and Lugger are registered trademarks of Northern Lights Inc 2013 All rights reserved L...
