Northern Lights NL773LW4 Operator's Manual
  1. Manuals
  2. Brands
  3. Northern Lights Manuals
  4. Engine
  5. NL773LW4
  6. Operator's manual

Northern Lights NL773LW4 Operator's Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
OPERATOR'S MANUAL
OPERATOR'S MANUAL
ONL773LW4
For Models: NL773LW4 and NL773LW4E
www.northern-lights.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the NL773LW4 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Northern Lights NL773LW4

Summary of Contents for Northern Lights NL773LW4

  • Page 1 OPERATOR’S MANUAL OPERATOR’S MANUAL ONL773LW4 For Models: NL773LW4 and NL773LW4E www.northern-lights.com...
  • Page 2 This label is to state: ULTRA LOW SULFUR FUEL ONLY Northern Lights is providing this label for application to the fuel inlet of the fuel supply tank for each engine or generator set. This is to be applied by the installer of the engine or gen set, or by the manufacturer of the equipment that the engine or gen set is installed in.

  • 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 ONL773LW4 5/21...

  • Page 4: Introduction

    Failures begin with minor problems that are Unit Identification MODELS INCLUDED This manual covers the operating instructions for: NL773LW4 & NL773LW4E industrial generator sets. Model Numbers Model numbers give the unit's application, block model, aspiration, and RPM: L, W, E, 4...

  • Page 5: Warranty

    Updated 7-10-13 Warranty NOTE: If the warranty is to apply, the servicing A warranty registration certificate is supplied instructions outlined in this manual must be with your set. The extent of coverage is described followed. If further information is needed, please in the Limited Warranty Statement.
  • Page 6 Updated 3-12-12 Safety Rules (Continued) 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 16 o C (60 o F). with Northern Lights products are lubricants, coolants, paints and adhesives. Always remove grounded (-) battery clamp first and replace ground clamp last.
  • 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 Work in Well Ventilated Areas...
  • 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 Procedures

    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: Industrial Generator

    Industrial Generator Component Locations Figures 2-A and B: NL773LW4 7. Fuel Lift Pump 13. Hourmeter 1. Junction Box 14. Control Panel 8. Dipstick 2. Air Filter 15. Starter 9. Fuel Inlet and Return 3. Crankcase Vent 16. Alternator 10. Oil Filter 4.

  • Page 12: Control Panel

    Control Panel Figure 3: Series 1-B Generator Control Panel 1. SHUTDOWN BYPASS-PREHEAT SWITCH There are two functions built into this switch: preheating the engine and bypassing the engine safety shutdown circuit, enabling a quicker start. Hold the switch in the ON position for approximately 10 to 20 seconds before starting a cold engine.

  • Page 13: Operating Procedures

    Updated 1-10-13 Operating Procedures engine. Holding the switch too long can burn out the BREAK-IN PERIOD glow plugs. This step is not necessary if the engine is already warm. 1. The first 100 hours on a new or reconditioned 2. While holding the Shutdown Bypass-Preheat switch engine are critical to its life and performance.

  • Page 14: Spare Parts

    SPARE PARTS 3. Do the following when your warning or shutdown system is activated: 1. Northern Lights recommends that you keep the a. Check the temperature gauge. following spare parts on hand for field service. The Industrial sets: If above 230°F (110°C), shut parts are available from your local Northern Lights off the engine immediately.

  • Page 15: 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 SP2/3 Change engine oil and filter Check V-belt tension...

  • Page 16: Servicing

    Updated 7-8-13 Servicing SP2. OIL CHANGES LUBRICATION - GENERAL 1. The set is delivered with special break-in oil. 1. Use only clean, high quality lubricants stored in Change the engine oil and oil filter after 50 hours clean containers in a protected area. of operation.

  • Page 17: Air Filter

    Servicing SP4. AIR CLEANER 1. Inspect air cleaner every 200 hours. In dusty conditions, check more often. 2. Industrial sets: the element cannot be cleaned. Replace it when necessary. Part numbers are: NL773LW3 – #24-27301 4. NOTE: Make absolutely sure no impurities enter Figure 5: Valve Adjustment the engine while changing the element.

  • Page 18: Fuels - General

    Servicing FUELS - GENERAL 1. Use only clean, high quality fuels of the following 6. Storing fuel: specifications, as defined by ASTM designation a. Keep dirt, scale, water, and other foreign matter D975 for diesel fuels: out of fuel. a. Use grade no. 2 diesel at ambient temperatures b.

  • Page 19: Bleeding The Fuel System

    Figure 6: The Fuel System - the NL773LW4 varies slightly from this depiction 3. Loosen bleed screw “C”. Pump hand primer “B” 1. The fuel system is self-bleeding. However, any until pure fuel (no bubbles) escapes.
  • Page 20 Servicing For illustration purposes only - the NL773LW4 may look a little different. Figure 7: Remove delivery line flare nuts. Figure 11: Unscrew injector. Figure 8: Remove delivery lines. Figure 12: Remove and replace copper sealing washer. Figure 9: Remove return line nuts.

  • Page 21: Injector Service

    1. Injectors should be checked every 1000 hours. is difficult to give a definite interval for checking the Check should be made by a Northern Lights dealer injection pump. But as a rule, pump settings, or local injection repair station.

  • Page 22: Cooling System Flushing

    Updated 5-13-21 Servicing SP14. COOLING SYSTEM FLUSHING 2. Here are acceptable water quality specifications: 1. Flush the cooling system every 2500 hours or every 12 Parts Grains Contaminates per Million per Gallon months, whichever comes first. 2. Industrial sets: Maximum Chlorides Remove radiator cap and open drain cocks on radiator and engine block.

  • Page 23: Glow Plugs

    Servicing GLOW PLUGS SP 18-19. BATTERY CARE 1. Each cylinder is supplied with a glow plug which 1. Check electrolyte level every 50 hours or once per serves to heat the combustion chamber. month. Add distilled water to manufacturer’s 2. To check the glow plugs, loosen the current recommended level.

  • Page 24: Troubleshooting

    Faulty connection • Clean and tighten battery and harness plug connections. Sulfated or worn out batteries • Check specific gravity and electrolyte level of each battery. If you cannot correct problems with these procedures, see your Northern Lights dealer. ONL773LW4 5/21...

  • Page 25: Lamp Codes

    Updated 11-26-13 Troubleshooting Lamp Flashing Pattern when Error has Occurred Before starting the engine: 1. Check all connections before powering the Engine ECU on. 2. When the Engine ECU is powered on (assuming no failures), the lamp will flash one time and then off. 3.

  • Page 26: 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 27 Injection pump timing off • 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. ONL773LW4 5/21...
  • Page 28 Cold engine • Warm up engine to normal operating temperature. Defective thermostat • Remove and check thermostat. Engine injectors timing off • See your dealer. If you cannot correct problems with these procedures, see your Northern Lights dealer. ONL773LW4 5/21...

  • Page 29: Wiring Diagrams (Current Production) Ac Electrical

    Updated 4-13-20 AC Wiring Diagrams ONL773LW4 5/21...
  • Page 30 Updated 3-17-20 AC Wiring Diagrams ONL773LW4 5/21...

  • Page 31: Dc Electrical

    Updated 4-13-20 DC Wiring Diagrams ONL773LW4 5/21...
  • Page 32 Updated 10-9-20 DC Wiring Diagrams ONL773LW4 5/21...

  • Page 33: Panel Wiring

    Updated 10-8-20 Panel Wiring Diagrams ONL773LW4 5/21...
  • Page 34 Updated 10-8-20 Panel Wiring Diagrams ONL773LW4 5/21...
  • Page 35 Updated 10-8-20 Panel Wiring Diagrams ONL773LW4 5/21...

  • Page 36: Appendix (Non-Current Production Diagrams) Dc Electrical

    Updated 2-1-12 DC Wiring Diagrams ONL773LW4 5/21...
  • Page 37 Updated 7-9-13 DC Wiring Diagrams ONL773LW4 5/21...

  • Page 38: Panel Diagrams

    Updated 2-1-12 Panel Diagrams ONL773LW4 5/21...
  • Page 39 Updated 2-1-12 Panel Diagrams ONL773LW4 5/21...
  • Page 42 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.

This manual is also suitable for:

Nl773lw4e

Table of Contents