Northern Lights OM844W3, M844W3, M844DW3, M844LW3, M20CRW3 Owner's Manual
OM844W3
For Models: M844W3, M844DW3, M844LW3,
and M20CRW3
OPERATOR’S MANUAL
Marine Generators | Marine Diesel Engines | Land-Based Generators
— CALIFORNIA —
Proposition 65 Warning:
Diesel engine exhaust and some of its constitu-
ents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
Northern Lights
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.: OM844W3 11/13
OPERATOR'S MANUAL
for Models
M844W3, M844DW3, M844LW3, and M20CRW3
Read this operator's manual thoroughly before starting to operate your equipment.
This manual contains information you will need to run and service your new unit.
Table of Contents
INTRODUCTION ...................................................... 2
Models Included ................................................... 2
Model Numbers .................................................... 2
Serial Numbers ..................................................... 2
WARRANTY ............................................................3
SAFETY RULES ....................................................3-7
LOCK OUT / TAG OUT PROCEDURES ............ 8
COMPONENT LOCATIONS
M844W3 Marine Generator (older baseframe) ..10
M844W3 Marine Generator (new baseframe) ........... 11
M20CRW3 Commercial Generator ....................12
CONTROL PANELS ............................................. 13
OPERATING PROCEDURES
Break-in Period ................................................... 14
Before Starting .................................................... 14
Starting ................................................................ 14
Operating ............................................................14
Stopping .............................................................. 14
Shutdowns and Alarms ....................................... 15
Spare Parts .......................................................... 15
SERVICING SCHEDULE CHART .......................16
SERVICING
Lubrication - General .......................................... 18
Checking Oil ....................................................... 18
Oil Changes ........................................................ 18
SERVICING (continued)
Changing Oil Filter ............................................. 18
Air Filter ............................................................. 19
V-Belts ................................................................19
Valve Clearances ................................................. 19
Fuels - General .................................................... 20
Fuel Filters .......................................................... 20
Bleeding the Fuel System ................................... 21
Injector Service ............................................ 22- 23
Injection Pump .................................................... 23
Cooling System - General ................................... 23
Cooling System Flushing .................................... 24
Heat Exchanger ................................................... 24
Raw Water Pump ................................................24
Generator Ends ................................................... 24
Electrical System - General ................................ 24
Glow Plugs .......................................................... 25
Booster Batteries ................................................. 25
Battery Care ........................................................ 25
PTO Care ............................................................25
Winterizing / Out-of-Service ..............................25
TROUBLESHOOTING
Electrical ............................................................. 26
Engine ......................................................... 27 - 29
WIRING DIAGRAMS
AC Electrical ..............................................30 - 32
DC Electrical ..............................................33 - 40
Proprietary Information
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 OM844W3 11/13
OM844W3 11/13
1
Revised 11/8/13
Introduction
Servicing of marine engines and generator sets presents
unique problems. In many cases boats cannot be moved
to a repair facility. Marine engines cannot be compared
Failures can begin with minor problems that are
overlooked and become amplied when not corrected
during routine maintenance.
to the servicing of automobiles, trucks or even farm
equipment. Failures often occur in remote areas far
from competent assistance. Marine engines are taxed
far more severely than auto or truck engines; therefore,
maintenance schedules must be adhered to more
strictly.
As operator, it is your obligation to learn about your
equipment and its proper maintenance. This is not a
comprehensive technical service manual. Nor will it
make the reader into an expert mechanic. Its aim is to
aid you in maintaining your unit properly.
Unit Identication
MODELS INCLUDED
This manual covers the operating instructions for:
M844W3 marine generator sets,
M844DW3 marine generator sets,
M844LW3 marine generator sets, and
M20CRW3 commercial generator sets.
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:
NOTE: There are two versions of the 844W3 engine.
The standard engine is designated 844W3. The long-
stroke engine is designated 844LW3. You will need to
know which engine you have to use this manual and to
order parts.
My Northern Lights generator set MODEL number is:
Model numbers give the unit's application, block model, aspiration, and RPM:
M
M - Northern Lights marine generator set
M844W3
M844DW3
Northern Lights marine diesel generator set with
=
an 844 engine and a PX-316K2 generator end.
Northern Lights 16 kW marine diesel generator set
=
with an 844L engine and a PX-320K2 generator end.
Model Numbers
844
Model number of engine block
+
Bore Cylinders
84 mm 4
M844LW3
M20CRW3
+
Northern Lights marine diesel generator set with
=
an 844L engine and a PX-320K2 generator end.
Northern Lights 20 kW (@ 60 Hz) commercial grade
=
marine generator set with a special generator end.
W, D, L, C, 3
W - New winding
D - Series Designation
L - Long stroke version
C - Commercial version
3 - Tier 3
Serial Numbers
Your set has three serial numbers: 1 an engine number stamped
on the block, 2 a generator plate, and
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.
a generator set plate.
3
Generator set serial number plate.
OM844W3 11/13
2
Revised 3/13/12
WARNING
WARNING
DANGER
WARNING
CAUTION
Warranty
A warranty registration certicate is supplied
with your set. The extent of coverage is described
in the Limited Warranty Statement. We
recommend that you study the statement carefully.
Safety Rules
NOTICE: Accident reports show that careless use of engines causes a high percentage of accidents.
You can avoid accidents by observing these safety rules. Study these rules carefully and enforce them on the job.
IMPORTANT SAFETY INSTRUCTIONS.
Electromagnetic equipment, including generator sets
and their accessories, can cause bodily harm and
life threatening injuries when improperly installed,
operated or maintained. To prevent accidents be aware
of potential dangers and act safely.
READ AND FOLLOW ALL SAFETY
INSTRUCTIONS IN THIS MANUAL,
PRIOR TO THE INSTALLATION
OF ANY GENERATOR SET OR
ACCESSORY. KEEP THESE
INSTRUCTIONS FOR FUTURE
REFERENCE.
Recognize Safety Symbols and Instructions
In addition to the information found in this section, this
operator’s manual uses three different signal words to
outline potential dangers of a specic nature.
!
!
!
DANGER indicates a hazardous situation which, if
not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if
not avoided, could result in death or serious injury.
CAUTION indicates a hazardous situation which,
if not avoided, could result in minor or moderate
injury.
NOTE: If the warranty is to apply, the servicing
instructions outlined in this manual must be
followed. If further information is needed, please
contact an authorized dealer or the factory.
on parts and components from outside suppliers
that is not reproduced in this manual. Consult the
suppliers for additional safety information.
Learn how to operate the machine and how to use
the controls properly. Only trained personnel should
operate machines, or work on or around them.
Keep you machine in proper working condition.
UNAUTHORIZED MODIFICATIONS TO THE
MACHINERY MAY IMPAIR ITS FUNCTION
AND SAFETY PARAMETERS.
Prevent Bypass and Accidental Starting
!
Do not start engine by shorting
across start terminal. Engine will
start if normal circuitry is bypassed,
creating a hazard by runaway
machinery.
Start engine only from operator’s station.
Follow All Safety Instructions
Carefully read and understand
all safety messages in 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 signs. For replacement signs,
proper placement of safety signs or clarication on any
safety issue, consult your Northern Lights dealer or the
factory.
There can be additional safety information contained
Handle Fuel Safely - Avoid Flames
!
Diesel is highly ammable and should be treated
with care at all times. Do do not refuel while
smoking or when near sparks or open ame.
ALWAYS STOP ENGINE
BEFORE FUELING
MACHINE. Always ll
portable fuel tank outdoors.
Never fuel a hot engine.
OM844W3 11/13
3
Revised 3/13/12
CAUTION
DANGER
DANGER
WARNING
Safety Rules
Prevent accidental discharge of starting uids by
storing all cans in a cool, safe place, away from sparks
or open ame. Store with cap securely on container.
Never incinerate or puncture a fuel container.
Prevent res by keeping machine clean of accumulated
trash, grease and debris. Always clean any spilled fuel
as swiftly as possible. Do not store oily rags, which
can ignite and burn spontaneously.
Be prepared if a re starts. Keep a rst aid kit and re
extinguisher handy. Keep emergency contact numbers
for re department, doctors, ambulance and hospital
near the telephone.
Service Machines Safely
!
Do not wear a necktie, scarf,
necklace, rings or other
jewelry, or any loose clothing
when working near moving
parts. Tie long hair behind your head. If any of these
items get caught in moving machinery, severe injury or
death could result.
Check for any loose electrical connections or faulty
wiring.
Look completely around engine to make sure that
everything is clear before starting.
Operating equipment requires the full attention of
the operator. Do not use radio or music headphones
while operating machinery.
Practice Safe Maintenance
!
Understand all service procedures
before starting work. Keep area clean and dry.
Never lubricate, service, or adjust machine while it is
in operation.
Keep hands, feet and clothing away from powerdriven equipment. When shutting down an engine,
disengage all power and operator controls. Allow
the engine to cool completely before beginning any
service work.
Securely support any machinery elements that must
be raised for service work with support or lifting
machinery specically intended for that purpose.
Keep all parts in good conditions and properly
installed. Fix damage immediately. Replace any
worn or broken parts. Remove any build up of
grease, oil or debris.
Disconnect battery ground cable (-) before making
any adjustments or service work.
Stay Clear of Rotating Drivelines
Wear Protective Clothing
!
To prevent catching anything in moving machinery,
always wear close tting clothes and safety equipment
appropriate to the job.
Prolonged exposure to loud noise can cause hearing
loss or impairment.
Wear suitable authorized
hearing protection, such
as earmuffs or plugs to
protect against loud noises.
!
Entanglement in rotating drivelines can cause serious
injury or death. Keep shields in place at all times.
Make sure that rotating shields turn freely in pace
with the drivelines.
Do not wear loose tting equipment around rotating
drivelines. Stop the engine and make sure that all
moving parts have stopped
before making any adjustments,
connections, or performing
any other type of service to
the engine or other driven
equipment.
OM844W3 11/13
4
Revised 3/13/12
WARNING
WARNING
WARNING
WARNING
Safety Rules (Continued)
Install all Safety Guards
!
Direct contact with rotating
fans, belts, pulley and drives
can cause serious injury.
Keep all guards in place at all
times during engine operation.
Wear close-tting clothes. Stop the engine and be
sure all fans, belts, pulleys and drives are stopped
before making adjustments, connections, or cleaning
near fans and their components.
Do not allow anything on your person to dangle into
or come in contact with a moving fan, belt, pulley or
drive. Fans can act as vacuums and pull materials
up from below, so avoid that area as well while in
service.
Safe Battery Handling
To Avoid Hazards:
• Fill batteries only in well-ventilated areas.
• Wear appropriate eye protection and rubber gloves.
• Never use air pressure to clean batteries.
• Wear appropriate ventilation equipment to avoid
inhaling fumes when adding electrolyte.
• Do not spill or drip electrolyte.
• Use correct jump-start procedure if required.
If acid is spilled on skin or in eyes:
1. Flush skin with water.
2. Apply baking soda or lime to
help neutralize acid.
3. Flush eyes with water for
15-30 minutes.
4. Get medical attention
immediately.
If acid is swallowed:
1. DO NOT induce vomiting.
2. Drink large amounts of
water or milk, without
exceeding 2 liters
(2 quarts)
3. Get medical attention immediately
!
Prevent Battery Explosions
Battery gas is highly
ammable. Battery
explosions can cause severe
injury or death. To help
prevent battery explosions, keep sparks, lighted
matches and open ame away from the top of battery.
When checking battery electrolyte level, use a
ashlight.
Never check battery charge by contacting the posts
with a metal object. Use a volt-meter or hydrometer.
Frozen batteries may explode if charged. Never
charge a battery that has not been allowed to warm to
at least 16oC (60oF).
Always remove grounded (-) battery clamp rst and
replace ground clamp last.
S
ulfuric acid in battery electrolyte is poisonous and
strong enough to burn skin, eat holes into clothing and
other materials, and cause blindness if splashed into eyes.
!
Battery posts, terminals, and related accessories
can contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
Handle Chemical Products Safely
!
Direct exposure to hazardous
chemicals can cause serious injury.
Among the potentially hazardous
chemicals that may be used
with Northern Lights
products are lubricants,
coolants, paints and adhesives.
All potentially hazardous chemicals come with a Material
Safety Data Sheet (MSDS). The MSDS provides specic
details on chemical products, including physical hazards,
safety procedures and emergency response techniques
OM844W3 11/13
5
Revised 3/13/12
CAUTION
WARNING
WARNING
WARNING
WARNING
DANGER
Safety Rules (Continued)
Read and understand the MSDS for each chemical before
you start any job that includes it. Follow the procedures
and use appropriate equipment exactly as recommended.
Contact your Northern Lights dealer or Northern Lights
factory for MSDS’s used on Northern Lights products.
Work in Well Ventilated Areas
!
Exhaust fumes from engines contain carbon monoxide
and can cause sickness or death. Work in well ventilated
areas to avoid prolonged exposure to engine fumes. If it
is necessary to run an engine in an enclosed area, route
the exhaust fumes out of the area with an approved, leak
proof exhaust pipe extension.
Remove Paint Before Welding or Heating
!
Hazardous fumes can be generated
when paint is heated by welding,
soldering or using a torch. To avoid
potentially toxic fumes and dust,
remove paint before heating.
•
Remove paint a minimum of 100
mm (4 in.) from the
area that will be affected by heat.
•
If paint cannot be removed, wear an approved respirator.
• If you sand or grind paint, use an approved respirator.
• If you use solvent or paint stripper, remove stripper
with soap and water before welding. Remove
solvent or paint stripper containers from the area.
• Allow at least 15 minutes for fumes to disperse
before welding or heating.
Do not use a chlorinated solvent in an area where welding
will occur. Work only in areas that are well ventilated.
Dispose of paint and solvent properly.
engine has been shut off. Do not remove a ller cap
unless it
hands. Slowly loosen cap to relieve pressure before
opening fully.
Avoid High Pressure Fluids
is cool enough to comfortably grip with bare
!
Relieve pressure prior to
disconnecting pressurized lines.
Escaping uid under pressure
can penetrate the skin causing
serious injury. Always relieve pressure before
disconnecting hydraulic or other pressurized lines.
Tighten all connections rmly before re-applying
pressure.
If searching for leaks, use a piece of cardboard.
Always protect your hands and other body parts from
high-pressure uids.
If an accident occurs, see a doctor immediately. Any
high pressure spray injected into the skin must be
removed within a few hours to prevent the risk of
gangrene or other infection.
Avoid Heating Near Pressurized Fluid Lines
!
Flammable spray can be generated
by heating near pressurized uid
lines, resulting in severe burns and
bodily injury. Pressurized lines
can rupture when heat goes beyond the immediate
ame area. Do not weld, solder or use a torch or
open ame near pressurized lines or other ammable
uids.
Do Not Open High-Pressure Fuel System
Service Cooling System Safely
!
Opening a pressurized cooling
system can release explosive
uids and causing serious burns.
Before opening any pressurized
cooling system, make sure the
!
Many Northern Lights engines use high-pressure
fuel injection. High-pressure uid remaining in fuel
lines can cause serious injury. Do not disconnect or
attempt any repair of fuel lines, sensors, or other
OM844W3 11/13
6
Revised 3/13/12
WARNING
!
CAUTION
!
CAUTION
WARNING
WARNING
Safety Rules (Continued)
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.
Avoid Hot Exhaust
!
Avoid exposure to and physical
contact with hot exhaust
gases. Exhaust parts and streams can reach high
temperatures during operation, leading to burns or
other serious injury.
Cleaning exhaust lters can also lead to exposure to
hot exhaust gas and the injury risk associated with
it. Avoid exposure to and physical contact with hot
exhaust gases when cleaning exhaust lters.
During auto or manual/stationary exhaust lter
cleaning operations, the engine will run at
elevated temperatures for an extended period of
time. Exhaust parts and streams can reach high
temperatures during operation, leading to burns or
other serious injury.
Avoid Harmful Asbestos Dust
!
Inhaling asbestos bers may cause
lung cancer. Avoid breathing any
dust that may be generated when
handling components containing
asbestos bers, including some
gaskets.
The asbestos used in these components is usually
found in a resin or otherwise sealed. Normal
handling of these components is not dangerous,
as long as airborne dust containing asbestos is not
generated.
Avoid creating dust. Never use compressed air for
cleaning. Avoid brushing or grinding materials
containing asbestos. When servicing, wear an
approved respirator. A special vacuum cleaner is
recommended to clean asbestos. If this vacuum is
not available, apply a mist of oil or water on the
material containing asbestos. Keep all bystanders
away from any area where asbestos dust may be
generated.
Use Proper Lifting Equipment and Techniques
!
Lifting heavy components incorrectly
can cause severe injury or damage
to machinery. Avoid unbalanced
loads. Do not use lifting eyes. Lift the
generator set using lifting bars inserted
through the lifting holes on the skid.
Follow all recommended removal and installation
procedures in this and associated Northern Lights
manuals.
Use Proper Tools
Makeshift tools and procedures
can create safety hazards.
Always use appropriate tools for
the job.
Use power tools only to loosen threaded parts and
fasteners. For loosening and tightening hardware,
always use the correct sized tools.
Do not use US measurement tools on metric
fasteners, or vice versa. Use only service parts that
meet Northern Lights specications.
Dispose of Waste Properly
Disposing of waste improperly can threaten the
environment and lead to unsafe working conditions.
Potentially harmful waste used in Northern Lights
equipment can include oil, fuel, coolant, lters and
batteries.
Use leakproof containers to drain uid. Do 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.
OM844W3 11/13
7
!
CAUTION
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
CAUTION
!
CAUTION
Added 3-13-12
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. Many serious accidents happen when someone thought the machine was turned off, or all of its energy was
safely blocked or released.
General Policy
To avoid dangerous or hazardous situations, refrain from
any of the following:
• Removing or bypassing a guard or other safety device
• Placing any part of your body in a position where you
could be caught by moving machinery.
• Cleaning or oiling machinery when in operation.
• Adjusting circuits, chillers, pumps, air handlers, valves,
circuit breakers or fans while in operation.
• Working on piping or high pressure systems.
Lock Out/Tag Out Instructions Electrical Equipment
Be sure the equipment’s ON/OFF switch is in the OFF
position and is unplugged from any electrical source before
attempting to perform any type of work on the equipment.
Obtain an electrical plug cap cover with a lockset. Secure
the plug terminal end using the electrical plug lockout cap.
Lock the cap and retain the key.
If the equipment is directly wired into an electrical box with
a shut off switch, obtain a lock pad and/or the appropriate
colored tags and place the lock and tag through the shut
off lever. Retain the key until the repair is completed and
the machine is safe to start. Be certain the shut off lever
is in the OFF position before restarting. NEVER give a
lock out key to unauthorized personnel.
If the equipment is directly wired into an electrical box
without a shut off switch and lock out capability, then a
circuit breaker lock out will be required. Obtain a circuit
lock and tag set. Install the lock onto the circuit breaker
box. Ensure the unit ON/OFF switch is in the OFF position
before restarting.
Lock Out/Tag Out Instructions Pneumatic and Hydraulic Equipment
If shutting off of air, water 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.
Afx a DO NOT OPERATE tag to each valve handle that
requires shut off. Each DO NOT OPERATE tag must be
signed and dated by the authorized technician servicing
the equipment.
Lock Out/Tag Out Instructions Air Hose Connected Pneumatic Equipment
Equipment connected to the compressed air system
through an air hose with a detachable tting must be
shutdown and unplugged. Excess air must be bled prior
to removing the air hose, prior to any maintenance or
repair activities.
Afx a DO NOT OPERATE tag to the air hose near the
detachable tting. Each DO NOT OPERATE tag must be
signed and dated by the authorized technician servicing
the equipment. Check that the equipment cannot be
operated by activating the ON switch.
Stored Energy
Immediately after applying Lock Out or Tag Out devices,
ensure that all potentially hazardous stored or residual
energy is relieved, disconnected, restrained and otherwise
rendered safe.
Verication of Isolation
Verify the machinery or equipment is actually isolated and
de-energized prior to beginning work on a machine or on
equipment that has been locked out.
Restarting Procedures
For servicing pneumatic and hydraulic equipment, the
following additional procedures must be implemented,
following completion of lock out/tag out procedures for
the unit to be serviced:
Shut off air, water or supply valves at the equipment to
be serviced.
Check the local bleed-off point for completed release of
pressurized air, water or oil.
Follow the procedures below prior to restoring energy:
• Ensure that all machinery or equipment is properly
reassembled. Inspect the machinery or equipment to
verify non-essential items have been removed.
• Ensure that all personnel are safely outside danger
zones. Notify personnel that lock out/tag out devices have
been removed and energy will be reapplied.
• Only authorized personnel may remove lock out/tag out
devices or notices.
OM844W3 11/13
8
Notes
OM844W3 11/13
9
Marine Generator Component Locations
Service Side
5
Non-Service
Side
Figure 1A and 1B: M844W3
1. DC Circuit Breaker
2. Coolant Recovery Tank
3. Secondary Fuel Filter
4. Fuel Return Line
5. Fuel Injector
6. Oil Fill (Top)
7. Coolant Fill
8. Fresh Water Pump
9. Injection Pump
5
10. Oil Fill (Side)
11. Raw Water Pump
12. Raw Water Inlet
13. Vibration Mount
14. Oil Pressure Sender
15. Freshwater Block Drain
16. Fuel Inlet Line
17. Fuel Return Line
18. Oil Dipstick
19. Oil Filter
20. Lube Oil Drain
21. Fuel Lift Pump
22. Control Panel Plug-in
23. AC Circuit Breaker for
Automatic Voltage Regulator
24. Expansion Tank/Exhaust
Manifold/Heat Exch.Tank
OM844W3 11/13
10
25. Coolant Drain
26. Wet Exhaust Elbow
27. Junction Box
28. Starter
29. Alternator
30. Belt Guard
31. Coolant Thermostat (behind)
32. Water Temperature Sender
added 3-28-11
Marine Generator Component Locations
7
4
1
22
3
2
5
6
8
9
10
12
11
21
11
32
20
22
31
19
18
17
7
16
24
13
14
15
25
Service Side
5
26
27
Non-Service
Side
Figure 1A and 1B: M844W3
1. DC Circuit Breaker
(not visible. Callout for
approximate location)
2. Coolant Recovery Tank
3. Secondary Fuel Filter
4. Fuel Return Line
5. Fuel Injector
6. Oil Fill (Top)
7. Coolant Fill
8. Fresh Water Pump
5
9. Injection Pump
10. Oil Fill (Side)
11. Raw Water Pump
12. Raw Water Inlet
13. Vibration Mount
14. Oil Pressure Sender
15. Freshwater Block Drain
16. Fuel Inlet Line
17. Fuel Return Line
18. Oil Dipstick
30
19. Oil Filter
20. Lube Oil Drain
21. Fuel Lift Pump
22. Control Panel Plug-in
(not visible. Callout for
approximate location)
23. AC Circuit Breaker for
24. Expansion Tank/Exhaust
OM844W3 11/13
29
Automatic Voltage Regulator
Manifold/Heat Exch.Tank
11
28
13
25. Coolant Drain
26. Wet Exhaust Elbow
27. Junction Box
28. Starter
29. Alternator
30. Belt Guard
31. Coolant Thermostat (behind)
32. Water Temperature Sender
Commercial Generator Component Locations
Figure 2A and 2B: M20CRW3
1. DC Circuit Breaker
2. Secondary Fuel Filter
3. Fuel Return Line
4. Fuel Injector
5. Oil Fill (Top)
6. Coolant Fill
7. Fresh Water Pump
8. Injection Pump
9. Oil Fill (Side)
10. Raw Water Pump
11. Raw Water Inlet
12. Vibration Mount
13. Oil Pressure Sender
14. Freshwater Block Drain
15. Oil Dipstick
16. Oil Filter
17. Oil Drain
18. Fuel Lift Pump
19. Control Panel Plug-in
20. AC Circuit Breaker for
Automatic Voltage Regulator
21. Expansion Tank/Exhaust
Manifold/Heat Exch.Tank
22. Coolant Drain
23. Wet Exhaust Elbow
OM844W3 11/13
12
24. Junction Box
25. Starter
26. Alternator
27. Belt Guard
28. Coolant Thermostat (behind)
29. Water Temperature Sender
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