Northern Lights M673L3 Operator's Manual
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Northern Lights M673L3 Operator's Manual

Marine generators
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OM673L3
For Models: M673L3 and M673LD3
OPERATOR'S MANUAL
Marine Generators | Marine Diesel Engines | Land-Based Generators

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Summary of Contents for Northern Lights M673L3

  • Page 1 OM673L3 For Models: M673L3 and M673LD3 OPERATOR’S MANUAL Marine Generators | Marine Diesel Engines | Land-Based Generators...
  • Page 2 4420 14th Avenue N.W. Seattle, WA 98107 Tel: (206) 789-3880 Fax: (206) 782-5455 Copyright ©2013 Northern Lights, Inc. All rights reserved. Northern Lights™, and the Northern Lights logo are trademarks of Northern Lights, Inc. Printed in U.S.A. PART NO.: OM673L3 11/13...

  • Page 3: Table Of Contents

    This publication is the property of Northern Lights, Inc. It may not be reproduced in whole or in part without the written permission of Northern Lights, Inc. © Northern Lights, Inc. All rights reserved. Litho U.S.A. Publication number OM673L3 11/13...

  • Page 4: Introduction

    D - Series designation 67 mm 3 - Tier III M673L3 Northern Lights marine diesel generator set with a 673 engine long stroke, TF-276D generator end, Tier III. M673LD3 Northern Lights marine diesel generator set with a 673 engine long stroke, TF-276D generator end, Tier III, 5 kW.

  • Page 5: Warranty

    For replacement signs, ALWAYS STOP ENGINE proper placement of safety signs or clarification on any BEFORE FUELING safety issue, consult your Northern Lights dealer or the MACHINE. Always fill factory. portable fuel tank outdoors. There can be additional safety information contained Never fuel a hot engine.
  • Page 6 Revised 3-12-12 Safety Rules Prevent accidental discharge of starting fluids by Operating equipment requires the full attention of storing all cans in a cool, safe place, away from sparks the operator. Do not use radio or music headphones or open flame. Store with cap securely on container. while operating machinery.
  • Page 7 Among the potentially hazardous with a metal object. Use a volt-meter or hydrometer. chemicals that may be used with Northern Lights Frozen batteries may explode if charged. Never products are lubricants, charge a battery that has not been allowed to warm to at least 16 o C (60 o F).
  • Page 8 Slowly loosen cap to relieve pressure before opening fully. Contact your Northern Lights dealer or Northern Lights factory for MSDS’s used on Northern Lights products. Avoid High Pressure Fluids WARNING...
  • Page 9 Exhaust parts and streams can reach high Follow all recommended removal and installation temperatures during operation, leading to burns or procedures in this and associated Northern Lights other serious injury. manuals. Cleaning exhaust filters can also lead to exposure to...

  • Page 10: Lock Out / Tag Out Procedure

    Scope During maintenance, repairs or retooling of a Northern Lights generator set, simply turning the machine off or unplugging it while it is being worked on does not give enough protection to others who are not performing the maintenance or repair.
  • Page 11 Notes OM673L3 11/13...

  • Page 12: Component Locations M673 Marine Generator

    Revised 5-12-11 Marine Generator Component Locations Figure 2: M673L3 Non-Service Side. with 2009 base frame Figure 3: M673L3 Service Side, with 2009 base frame 1. Heat Exchanger End Cap 8. Generator End Cover 16. DC Circuit Breaker 23. Lube Oil Drain 2.
  • Page 13 Revised 5-12-11 Marine Generator Component Locations Figure 2: M673L3 Non-Service Side, with 2010 or later baseframe. Figure 3: M673L3 Service Side, with 2010 or later baseframe. 1. Heat Exchanger End Cap 8. Generator End Cover 16. DC Circuit Breaker 23. Lube Oil Drain 2.

  • Page 14: Northern Lights Generator Sets

    Updated 6-24-10 Control Panels 1. SHUTDOWN BYPASS-PREHEAT SWITCH This switch serves two functions: 1. Preheats glowplugs before beginning the starting process. Press switch for 10-20 seconds before attempting start-up. 2. Bypasses the safety shutdown feature during the starting process. Keep switch engaged while starting engine, and for 2 to 3 seconds afterwards, allowing oil pressure to build beyond shutdown setpoint.

  • Page 15: Operating Procedures

    Updated 1-9-13 Operating Procedures BREAK-IN PERIOD STARTING 1. The first 100 hours on a new or reconditioned 1. Hold the Shutdown Bypass-Preheat switch in the ON engine are critical to its life and performance. position for 10 to 20 seconds before starting a cold 2.

  • Page 16: Shutdowns And Alarms

    Operating Procedures SPARE PARTS SHUTDOWNS AND ALARMS 1. Northern Lights recommends that you keep the 1. Generator sets have shutdown systems to stop the engine in the event of high water temperature or low following spare parts on hand for field service. The parts are available from your local Northern Lights oil pressure.

  • Page 17: Servicing Schedule Chart

    page updated 12/19/12 Servicing Schedule Chart The Servicing Schedule Chart below shows the service schedule required for proper maintenance of your generator set. More detailed coverage of each Service Point (SP) is listed on the page noted in the ‘page’ column. DAILY: EVERY 500 HOURS: Check oil level in engine...
  • Page 18 Service Record Notes OM673L3 11/13...

  • Page 19: Lubrication - General

    9. Refill engine with recommended oil. 10. Engine capacity with new oil filter is: Figure 9: Lube Oils M673L3 & LD3 – 3.3 quarts (3.1 liters) 4. Some increase in oil consumption may be expected when SAE 5W and SAE 5-20W oils are used. Check SP3.

  • Page 20: Air Filter

    Replace if necessary. Part number is: 3. To bring the No. 1 cylinder to top dead center in the M673L3 & LD3 - #24-28003 compression stroke, align the timing mark; the top mark of the crank pulley with that of the timing gear NOTE: Make absolutely sure no impurities enter case.

  • Page 21: Fuels - General

    Keep dirt, scale, water, and other foreign matter out of fuel. 24-52020 M673L3 & LD3 - b. Avoid storing fuel for long periods of time. c. Fill the fuel tank at the end of each day’s operation. This will reduce condensation.

  • Page 22: Bleeding The Fuel System

    Updated 6-23-10 Servicing SP10. BLEEDING THE FUEL SYSTEM CAUTION: Escaping diesel fuel under pressure can penetrate skin causing serious personal injury. Before disconnecting lines be sure to relieve all pressure. Before applying pressure, be sure all connections are tight and lines, pipes and hoses aren't damaged. Fuel escaping from a very small hole can be almost invisible.

  • Page 23: Injector Service

    1. Since operating conditions may vary considerably, it more often as necessary. Check should be made by a is difficult to give a definite interval for checking the Northern Lights dealer or local injection repair injection pump. But as a rule, pump settings, station.
  • Page 24 added 11-8-13 Servicing WATER QUALITY SP13. CHECK THE COOLANT LEVEL 1. Distilled, deionized, soft water is preferred for use in cooling systems. Bottled distilled water from a food 1. Check the coolant level each day before starting the store or water supplier is recommended. Tap water engine.
  • Page 25 Servicing Figure 13: Remove delivery line flare nuts. Figure 17: Remove return line. Figure 14: Remove delivery lines. Figure 18: Unscrew injector. Figure 15: Cover lines, inlets and injection pump outlets. Figure 19: Remove and replace copper sealing washer. Figure 16: Remove return line nuts. Figure 20: Reinstall injector.

  • Page 26: Cooling System Flushing

    Servicing SP14. COOLING SYSTEM FLUSHING SP16. RAW WATER PUMP 1. Flush the cooling system every 2500 hours or every 1. Change the seawater pump impeller every 1000 12 months, whichever comes first. hours, or as needed. a. Remove expansion tank cap and drain engine 2.

  • Page 27: Glow Plugs

    Servicing SP 17-18. BATTERY CARE GLOW PLUGS 1. Check electrolyte level daily. Add distilled water to 1. Each cylinder is supplied with a glow plug which manufacturer’s recommended level. serves to heat the combustion chamber for starting. 2. Batteries, cables and cable terminals should 2.

  • Page 28: Ac Generator - Tf-276D

    page updated 6-18-12 AC Generator - TF-276D GENERAL A Generator Set includes the engine, the generator, and the control or “J” box ( Figure 23 The generator and the control or “J” box produce the electrical power. Generator excitation is provided by residual magnetism and electrical output voltage is con- trolled by the automatic voltage regulator (AVR) located in the control box (...

  • Page 29: Connections

    AC Generator - TF-276D CONNECTIONS 1. 120 Volt Output: a. 120 volt output can be selected by connecting the terminals of the control terminal board to 120 Figure 26 Figure 29: Output Terminal Board, 240 Volt Output 3. 120/240 Volt Output a.

  • Page 30: Operation

    2. Be sure to keep the generator area clean and dry. d. Generator bearing should be replaced by your a. Dust and foreign material may reduce the flow of Northern Lights dealer at 10,000 hours. cooling air, reducing heat dissipation and causing 6. Check the brushes the generator to overheat.
  • Page 31 page updated 6-22-10 AC Generator - TF-276D 7. Replacing Brushes 9. Parts: See Parts Book for complete list a. Shut down the generator. Remove four screws a. Bearing and end cover of the generator. Part #22-68305 b. Brush assembly is black plastic with two wires b.

  • Page 32: Troubleshooting

    • Clean and tighten battery and harness plug connections. Sulfated or worn out batteries • Check specific gravity and electrolyte level of each battery. Dead Battery • Charge battery. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673L3 11/13...

  • Page 33: Engine

    Troubleshooting ENGINE PROBLEM POSSIBLE CAUSE RECOMMENDATION(S) Engine Hard to Start Improper starting procedure • See starting section of this manual. Take or Will Not Start special note of Bypass Switch operation. No fuel • Check level of fuel in fuel tank. Low battery output •...
  • Page 34 Below Normal Thermostats not working properly • Check thermostats. Engine Temperature Temperature gauge • Check water temperature with thermometer. not working properly If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673L3 11/13...

  • Page 35: Engine

    Cold engine • Warm up engine to normal operating temperature. Defective thermostat • Remove and check thermostat. Engine out of time • See your dealer. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673L3 11/13...

  • Page 36: Data Sheet Marine

    4/12/10 Northern Lights Marine Data M673L3 M673LD3 Model: 1800 1500 1800 1500 kW Rating Frequency (Hz) GENERAL INFORMATION Cylinders Displacement 46.4 in 46.4 in 46.4 in 46.4 in (0.761 ltr) (0.761 ltr) (0.761 ltr) (0.761 ltr) Cycle Bore 2.64 in 2.64 in...

  • Page 37: Wiring Diagrams Ac Electrical

    Updated 6-22-11 AC Wiring Diagrams OM673L3 11/13...
  • Page 38 Updated 6-22-11 AC Wiring Diagrams OM673L3 11/13...
  • Page 39 Updated 4/9/12 AC Wiring Diagrams OM673L3 11/13...

  • Page 40: Dc Electrical

    Updated 6-22-11 DC Wiring Diagrams OM673L3 11/13...
  • Page 41 Updated 6-22-11 DC Wiring Diagrams OM673L3 11/13...
  • Page 42 Added 6-22-11 DC Wiring Diagrams OM673L3 11/13...
  • Page 43 Updated 4-9-12 DC Wiring Diagrams OM673L3 11/13...
  • Page 45 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. © 2013 All rights reserved. Litho USA.

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