Northern Lights Lugger OM843NW2 Operator's Manual
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Northern Lights Lugger OM843NW2 Operator's Manual

Marine generators | marine diesel engines | land-based generators
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OM843NW2
For Model: M843NW2
OPERATOR'S MANUAL
Marine Generators | Marine Diesel Engines | Land-Based Generators

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Summary of Contents for Northern Lights Lugger OM843NW2

  • Page 1 OM843NW2 For Model: M843NW2 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 ©2009 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.: OM843NW2 10/09...

  • 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 OM843NW2 10/09...

  • Page 4: Introduction

    Fill in the model number of your unit in the blank space provided. This will give you a reference whenever service or maintenance is required: My Northern Lights generator set MODEL number is: Model Numbers Model numbers give the unit's application, block model, aspiration, and RPM:...

  • Page 5: Serial Numbers

    Serial Numbers Your set has three serial numbers: an engine number stamped on the block, a generator plate, and  a generator set plate. Use the serial number on the generator set plate when ordering parts or in correspondence. The generator set plate is found on the service side of the generator and resembles the drawing at left.

  • Page 6: Component Locations M843Nw2 Marine Generator

    Marine Generator Component Locations Figure 1 and 2: M843NW2 Belt Guard AC Circuit Breaker for AVR Injection Pump DC Circuit Breaker Oil Filter Expansion Tank Oil Fill (2 Places) Coolant Recovery Tank Oil Drain Wet Exhaust Elbow Seawater Pump Fuel Filter Generator Set Plate Junction Box Air Filter (inside manifold)

  • Page 7: Control Panels

    Control Panels 1. SHUTDOWN BYPASS-PREHEAT SWITCH Two functions are built into this switch: the preheating of the engine, and bypassing of the engine safety shut- down circuit. Hold switch in the ON position 10 - 20 seconds before starting the engine, and continue holding on during engine cranking.

  • Page 8: Operating Procedures

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

  • Page 9: Shutdowns And Alarms

    SPARE PARTS 1. Your unit is fi tted with a system to protect it from 1. Northern Lights recommends that you keep the high water temperature or low oil pressure. following spare parts on hand for fi eld service. The a.

  • Page 10: Servicing Schedule Chart

    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 Change primary fuel fi...
  • Page 11 Service Record Notes OM843NW2 10/09...

  • Page 12: Servicing

    Servicing SP1. CHECKING OIL LEVEL LUBRICATION - GENERAL 1. Check the oil level in the crankcase with the dipstick 1. Use only clean, high quality lubricants stored in . The oil level must be in the waffl ed area (Fig. 5) clean containers in a protected area.

  • Page 13: Air Filter

    Servicing SP4. AIR CLEANER 1. Inspect air cleaner every 250 hours. In dusty condi- tions, check more often. 2. Marine sets: if dirty, wash element in soapy water. Rinse and dry thoroughly before re-installing. Replace if necessary. Part numbers are: M843N –...

  • Page 14: Fuels - General

    Servicing FUELS - GENERAL SP7-9. FUEL FILTERS 1. Use only clean, high quality fuels of the following Primary specifi cations, as defi ned by ASTM designation Fuel Filter D975 for diesel fuels: a. Use grade no. 2 diesel at ambient temperatures above freezing 32°F (0°C).

  • Page 15: Bleeding The Fuel System

    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 are not damaged. Fuel escaping from a very small hole can be almost invisible.
  • Page 16 Servicing Figure 10: Remove delivery line fl are nuts. Figure 14: Remove return line. Figure 11: Remove delivery lines. Figure 15: Unscrew injector. Figure 12: Cover lines, inlets and injection pump outlets. Figure 16: Remove and replace copper sealing washer. Figure 13: Remove return line nuts.

  • Page 17: Injector Service

    1. Injectors should be checked every 1000 hours or more often as needed. Check should be made by SP12. INJECTION PUMP a Northern Lights dealer or local injection repair 1. Since operating conditions may vary considerably, it station. Have your dealer check the fuel injection is diffi...

  • Page 18: Cooling System Flushing

    4. Clean the inside of exchanger core tubes using Manual. If you do not have one of these manuals, a metal rod. Flush, inspect and clean again if contact your local Northern Lights dealer. necessary. 5. Reassemble. Fill the cooling system, start the engine ELECTRICAL SYSTEM - GENERAL and check for leaks.

  • Page 19: Glow Plugs

    Servicing GLOW PLUGS SP 18-19. BATTERY CARE 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. 2. Batteries, cables and cable terminals should 2.

  • Page 20: Troubleshooting

    • Clean and tighten battery and harness plug connections. Sulfated or worn out batteries • Check specifi c gravity and electrolyte level of each battery. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM843NW2 10/09...

  • Page 21: 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 22 Injection pump out of time • See your dealer. Engine not at proper temperature • Check your thermostats. • Check water temperature with thermometer and replace gauge if necessary. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM843NW2 10/09...
  • Page 23 White Smoke Cold engine • Warm up engine to normal operating temperature. Defective thermostat • Remove and check thermostat. Engine timing off • See your dealer. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM843NW2 10/09...

  • Page 24: Wiring Diagrams

    Wiring Diagrams OM843NW2 10/09...

  • Page 25: Dc Electrical

    Wiring Diagrams OM843NW2 10/09...
  • Page 26 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. www.northern-lights.com © 2009 All rights reserved. Litho USA.

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Lugger m843nw2

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