This manual is written for an experienced technician.
Essential tools required in performing certain service
work are identified in this manual and are
recommended for use.
This manual (CTM86) covers only the base engine. It
is one of five volumes on 8.1 L engines. The following
four companion manuals cover fuel system repair and
diagnostics:
• CTM243—Mechanical Fuel Systems
• CTM134—Level 3 Electronic Fuel Systems
• CTM255—Level 9 Electronic Fuel Systems
• CTM68—Electronic Injection Fuel Systems
Other manuals will be added in the future to provide
additional information on electronic fuel systems as
needed.
A set of all manuals covering the 8.1 L engines, except
CTM68, can be obtained by purchasing CTM450
Binder Set.
Live with safety: Read the safety messages in the
introduction of this manual and the cautions presented
throughout the text of the manual.
applicable essential tools, service equipment, and
other materials needed to do the job, service parts kits,
specifications, wear tolerance, and torque values.
Before beginning repair on an engine, clean the engine
and mount on a repair stand. (See CLEAN ENGINE in
Group 010 and see MOUNT ENGINE ON REPAIR
STAND in Group 010..)
This manual contains SI Metric units of measure
followed immediately by the U.S. Customary units of
measure. Most hardware on these engines is metric
sized.
Some components of this engine may be serviced
without removing the engine from the machine. Refer
to the specific machine technical manual for
information on components that can be serviced
without removing the engine from the machine and for
engine removal and installation procedures.
Read each block of material completely before
performing service to check for differences in
procedures that apply to the engine model number you
are working on. If only one procedure is given, that
procedure applies to all the engines in the manual.
This is the safety-alert symbol. When you see this
symbol on the machine or in this manual, be alert to
the potential for personal injury.
Use this component technical manual in conjunction
with the machine technical manual. An application
listing in the introduction identifies
engine-models/applications. See the machine technical
manual for information on engine removal and
installation, and gaining access to engine components.
Information is organized in sections and groups for the
various components requiring service instruction. At
the end of the book are summary listings of all
Component Technical Manuals are concise service
guides for specific components. Component technical
manuals are written as stand-alone manuals covering
multiple machine applications.
Fundamental service information is available from
other sources covering basic theory of operation,
fundamentals of troubleshooting, general maintenance,
and basic types of failures and their causes.
CALIFORNIA PROPOSITION 65 WARNING: Diesel
engine exhaust and some of its constituents are
known to the State of California to cause cancer,
birth defects, and other reproductive harm.
CTM86 (20MAR01)P
OWERTECH
DPSG,OUO1004,912 –19–15JUN99–1/1
8.1 L Diesel Engines — Base Engine
032001
PN=2
John Deere Dealers
Introduction
The changes listed below make your CTM obsolete.
Repair, operation, and diagnostics are now covered in
five manuals. Discard CTM86 dated 06JUL99 and
replace with the following new manuals:
• CTM86—Base Engine
• CTM243—Mechanical Fuel Systems
• CTM134—Level 3 Electronic Fuel Systems
• CTM255—Level 9 Electronic Fuel Systems
• CTM68—Electronic Fuel Injection Systems
Also, copy these pages and route through your Service
Department.
SECTION 01, GROUP 001 (Engine Identification)
• Updated engine model designation chart.
• Updated engine application charts.
SECTION 01, GROUP 002 (Fuels, Lubricants, and
Coolants)
• Updated engine oil and coolant application
guidelines.
SECTION 02, GROUP 050 (Camshaft and Timing
Gear Train Repair and Adjustment)
• Eliminated procedure to check valve lift. Use
appropriate procedure from Group 020 or Group
021.
• Revised specifications for installation of crankshaft
gear-driven auxiliary drive.
• Revised procedure for installation of thrust washer
and timing gear cover.
SECTION 02, GROUP 060 (Lubrication System
Repair and Adjustment)
• Added information for top-load oil filter.
SECTION 02, GROUP 070 (Cooling System Repair
and Adjustment)
• Added belt routing diagrams.
• Revised procedure for installation of coolant pump.
SECTION 02, GROUP 080 (Air Intake and Exhaust
System Repair and Adjustments)
SECTION 02, GROUP 010 (Engine Rebuild)
• Updated engine disassembly sequence.
• Updated engine assembly sequence.
• Updated sealant application guidelines.
SECTION 02, GROUP 020 (Cylinder Head and
Valves Repair and Adjustment Serial Number
( —199,999)
• Repair procedures for cylinder head and valves on
engines with serial number ( —199,999) are covered
in this group.
SECTION 02, GROUP 021 (Cylinder Head and
Valves Repair and Adjustment Serial Number
(200,000— )
• Repair procedures for cylinder head and valves on
engines with serial number (200,000— ) are covered
in this group.
• Revised procedure for turbocharger inspection
techniques.
• Eliminated procedure for adjusting turbocharger
wastegate actuator.
• Revised specifications for installing turbocharger.
SECTION 02, GROUP 090 (Fuel System Repair and
Adjustments)
NOTE: Repair procedures for fuel systems have been
have been moved to Section 02, Group 090 in
the three following technical manuals:
•
CTM243—Mechanical Fuel Systems
•
CTM134—Level 3 Electronic Fuel Systems
•
CTM255—Level 9 Electronic Fuel Systems
SECTION 02, GROUP 100 (OEM Starting and
Charging Systems)
CTM86 (20MAR01)P
OWERTECH
DPSG,OUO1004,898 –19–19MAY99–1/2
8.1 L Diesel Engines — Base Engine
032001
PN=3
Introduction
• Starting and charging systems are covered in this
new group.
SECTION 03, GROUP 120 (Base Engine Operation)
• Base engine theory of operation is covered in this
new group.
NOTE: Fuel system theory of operation has been
moved to Section 03 in the three following
technical manuals:
•
CTM243—Mechanical Fuel Systems
•
CTM134—Level 3 Electronic Fuel Systems
•
CTM255—Level 9 Electronic Fuel Systems
SECTION 04, GROUP 150 (Observable Diagnostics
and Tests)
• Base engine observable diagnostics and tests are
covered in this new section/group.
NOTE: Fuel system diagnostics and testing has been
moved to Section 04 in the three following
technical manuals:
•
CTM243—Mechanical Fuel Systems
•
CTM134—Level 3 Electronic Fuel Systems
•
CTM255—Level 9 Electronic Fuel Systems
SECTION 05 (Tools and Other Materials)
• All essential tools, service tools, dealer fabricated
tools, and other materials listed throughout this
manual are consolidated in this section for ease of
reference.
SECTION 06 (Specifications)
• All repair, test, and diagnostic specifications listed
throughout this manual are consolidated in this
section for ease of reference.
• Updated bolt and cap screw torque values.
• Updated General OEM specifications.
• Updated dynamometer specifications.
• Updated turbocharger boost specifications
CTM86 (20MAR01)P
OWERTECH
DPSG,OUO1004,898 –19–19MAY99–2/2
8.1 L Diesel Engines — Base Engine
032001
PN=4
About this Manual
Introduction
This component technical manual (CTM) covers the base
engine for P
OWERTECH
8.1 L (494 cu. in.) diesel engines
produced in Waterloo, Iowa.
This manual is a complete revision of CTM86
(06JUL99). Replace earlier manual with the following new
manuals:
• CTM86 — P
OWERTECH
8.1 L Diesel Engines—Base
Engine
• CTM243 — P
OWERTECH
8.1 L Diesel Engines—
Mechanical Fuel Systems
• CTM134 — P
OWERTECH
6.8 L & 8.1 L Diesel
Engines—Level 3 Electronic Fuel Systems with Bosch
In-Line Pump
• CTM255 — 8.1 L Diesel Engines—Level 9 Electronic
Fuel Systems with Denso In-Line Pump
• CTM68 —Electronic Fuel Injection Systems
Direction of engine crankshaft rotation in this manual is
referenced facing the flywheel looking toward the fan.
Front of engine is fan drive end.
Read each procedure completely before performing any
service.
IMPORTANT: For repair, diagnostics, and testing
procedures on the fuel system, refer to
the companion manuals:
• CTM243 — P
OWERTECH
8.1 L Diesel
Engines—Mechanical Fuel Systems
• CTM134 — P
OWERTECH
6.8 L & 8.1 L
Diesel Engines—Level 3 Electronic
Fuel Systems with Bosch In-Line
Pump
• CTM255 — 8.1 L Diesel Engines—
Level 9 Electronic Fuel Systems with
Denso In-Line Pump
• CTM68 —Electronic Fuel Injection
Systems
P
OWERTECH
is a registered trademark of Deere & Company
CTM86 (20MAR01)P
OWERTECH
DPSG,OUO1004,913 –19–15JUN99–1/1
8.1 L Diesel Engines — Base Engine
032001
PN=5
Introduction
Identification Views Serial Number ( —199,999)
8.1 L Diesel Engine Right Front View (Engines —199,999)
RG7362 –UN–05JAN98
8.1 L Diesel Engines Left Front View (Engines —199,999)
RG7363 –UN–05JAN98
8.1 L Diesel Engines Right Side View (Engines —199,999)
RG7385 –UN–05JAN98
8.1 L Diesel Engines Left Side View (Engines —199,999)
CTM86 (20MAR01)P
OWERTECH
RG7387 –UN–05JAN98
RG,RG34710,4001 –19–14DEC00–1/2
8.1 L Diesel Engines — Base Engine
032001
PN=6
Introduction
8.1 L Diesel Engine Right Front View (Engines —199,999)
RG7388 –UN–20JUN00
8.1 L Diesel Engine Left Front View (Engines —199,999)
RG7386 –UN–20JUN00
8.1 L Diesel Engine Front View (Engines —199,999)
RG7383 –UN–05JAN98
8.1 L Diesel Engine Rear View (Engines —199,999)
CTM86 (20MAR01)P
OWERTECH
RG7384 –UN–05JAN98
RG,RG34710,4001 –19–14DEC00–2/2
8.1 L Diesel Engines — Base Engine
032001
PN=7
Introduction
Identification Views Serial Number (200,000— )
8.1 L Diesel Engine Right Front View (Engines 200,000— )
8.1 L Diesel Engine Front View (Engines 200,000— )
RG11511 –UN–13DEC00
RG11513 –UN–31OCT00
8.1 L Diesel Engines Left Front View (Engines 200,000— )
RG11512 –UN–31OCT00
RG11514 –UN–31OCT00
8.1 L Diesel Engine Rear View (Engines 200,000— )
CTM86 (20MAR01)P
OWERTECH
RG,OUOD007,4002 –19–01NOV00–1/1
8.1 L Diesel Engines — Base Engine
032001
PN=8
SECTION 01—General
Group 000—Safety
Group 001—Engine Identification
Group 002—Fuels, Lubricants and Coolant
Contents
01
SECTION 02—Repair and Adjustments
Group 010—Engine Rebuild
Group 020—Cylinder Head and Valves Repair and
Adjustment S. N. ( —199,999)
Group 021—Cylinder Head and Valves Repair and
Adjustment S. N. (200,000— )
Group 030—Cylinder Block, Liners, Pistons, and
Rods Repair and Adjustment
Group 040—Crankshaft, Main Bearings and
Flywheel Repair and Adjustment
Group 050—Camshaft and Timing Gear Train
Repair and Adjustment
Group 060—Lubrication System Repair and
Adjustment
Group 070—Cooling System Repair and Adjustment
Group 080—Air Intake and Exhaust System Repair
and Adjustment
Group 100—OEM Starting and Charging Systems
Repair and Adjustment
SECTION 03—Theory of Operation
Group 120—Base Engine Operation
SECTION 04—Diagnostics
Group 150—Observable Diagnostics and Tests
02
03
04
05
06
SECTION 05—Tools and Other Materials
Group 170—Repair Tools and Other Materials
Group 180—Diagnostic Service Tools
Group 190—Dealer Fabricated Service Tools
SECTION 06—Specifications
Group 200—Repair and General OEM
Specifications
Group 210—Diagnostic Specifications
All information, illustrations and specifications in this manual are based on
the latest information available at the time of publication. The right is
reserved to make changes at any time without notice.
COPYRIGHT2001
DEERE & COMPANY
Moline, Illinois
A John Deere ILLUSTRUCTIONManual
All rights reserved
Previous Editions
Copyright1994,1997,1999
INDX
CTM86 (20MAR01)
i
P
OWERTECH
8.1 L Diesel Engines — Base Engine
032001
PN=1
01
02
03
04
05
Contents
06
INDX
CTM86 (20MAR01)
ii
P
OWERTECH
8.1 L Diesel Engines — Base Engine
032001
PN=2
Page
Group 000—Safety ....................01-000-1
Group 001—Engine Identification
Engine Model Designation................01-001-1
Engine Serial Number Plate Information .....01-001-2
Engine Option Code Label ...............01-001-3
Engine Application Chart (John Deere
Agricultural Equipment) ................01-001-4
Engine Application Chart (John Deere
Construction Equipment) ...............01-001-5
Engine Application Chart (OEM) (Outside
Equipment Manufacturers)..............01-001-5
Group 002—Fuels, Lubricants and Coolant
Diesel Fuel ...........................01-002-1
Bio-Diesel Fuel ........................01-002-2
Lubricity of Diesel Fuel ..................01-002-4
Operating in Warm Temperature Climates . .01-002-14
Flush and Service Cooling System ........01-002-15
Disposing of Coolant...................01-002-16
01
Section 01
General
Contents
CTM86 (20MAR01)
01-1
P
OWERTECH
8.1 L Diesel Engines — Base Engine
032001
PN=1
01
Contents
CTM86 (20MAR01)
01-2
P
OWERTECH
8.1 L Diesel Engines — Base Engine
032001
PN=2
Handle Fluids Safely—Avoid Fires
When you work around fuel, do not smoke or work near
heaters or other fire hazards.
Store flammable fluids away from fire hazards. Do not
incinerate or puncture pressurized containers.
Make sure machine is clean of trash, grease, and debris.
Do not store oily rags; they can ignite and burn
spontaneously.
Group 000
Safety
01
000
1
TS227 –UN–23AUG88
Avoid Fires
DX,FLAME –19–29SEP98–1/1
Handle Starting Fluid Safely
Starting fluid is highly flammable.
Keep all sparks and flame away when using it. Keep
starting fluid away from batteries and cables.
To prevent accidental discharge when storing the
pressurized can, keep the cap on the container, and store
in a cool, protected location.
Do not incinerate or puncture a starting fluid container.
TS1356 –UN–18MAR92
DX,FIRE3 –19–16APR92–1/1
CTM86 (20MAR01)
01-000-1
P
OWERTECH
8.1 L Diesel Engines — Base Engine
PN=13
032001
01
000
Handling Batteries Safely
2
CAUTION: Battery gas can explode. Keep
sparks and flames away from batteries. Use a
flashlight to check battery electrolyte level.
Never check battery charge by placing a metal
object across the posts. Use a voltmeter or
hydrometer.
Safety
Always remove grounded (-) battery clamp first
and replace it last.
CAUTION: Sulfuric acid in battery electrolyte is
poisonous. It is strong enough to burn skin, eat
holes in clothing, and cause blindness if
splashed into eyes.
Avoid the hazard by:
1. Filling batteries in a well-ventilated area.
2. Wearing eye protection and rubber gloves.
3. Avoiding breathing fumes when electrolyte is
added.
4. Avoiding spilling or dripping electrolyte.
5. Use proper jump start procedure.
If you spill acid on yourself:
1. Flush your skin with water.
2. Apply baking soda or lime to help neutralize
the acid.
3. Flush your eyes with water for 15—30
minutes. Get medical attention immediately.
TS204 –UN–23AUG88TS203 –UN–23AUG88
If acid is swallowed:
1. Do not induce vomiting.
2. Drink large amounts of water or milk, but do
not exceed2L(2quarts).
3. Get medical attention immediately.
WARNING: Battery posts, terminals, and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
CTM86 (20MAR01)
01-000-2
P
OWERTECH
DPSG,OUO1004,2758 –19–11MAY00–1/1
8.1 L Diesel Engines — Base Engine
PN=14
032001
Safety
Prepare for Emergencies
Be prepared if a fire starts.
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctors, ambulance service,
hospital, and fire department near your telephone.
01
000
3
Avoid High-Pressure Fluids
Escaping fluid under pressure can penetrate the skin
causing serious injury.
Avoid the hazard by relieving pressure before
disconnecting hydraulic or other lines. Tighten all
connections before applying pressure.
Search for leaks with a piece of cardboard. Protect hands
and body from high pressure fluids.
If an accident occurs, see a doctor immediately. Any fluid
injected into the skin must be surgically removed within a
few hours or gangrene may result. Doctors unfamiliar with
this type of injury should reference a knowledgeable
medical source. Such information is available from Deere
& Company Medical Department in Moline, Illinois, U.S.A.
First Aid Kit
TS291 –UN–23AUG88
DX,FIRE2 –19–03MAR93–1/1
X9811 –UN–23AUG88
High-Pressure Fluids
CTM86 (20MAR01)
01-000-3
P
OWERTECH
DX,FLUID –19–03MAR93–1/1
8.1 L Diesel Engines — Base Engine
PN=15
032001
01
000
Wear Protective Clothing
4
Wear close fitting clothing and safety equipment
appropriate to the job.
Prolonged exposure to loud noise can cause impairment
or loss of hearing.
Wear a suitable hearing protective device such as
earmuffs or earplugs to protect against objectionable or
uncomfortable loud noises.
Operating equipment safely requires the full attention of
the operator. Do not wear radio or music headphones
while operating machine.
Service Machines Safely
Safety
TS206 –UN–23AUG88
Protective Clothing
DX,WEAR –19–10SEP90–1/1
Tie long hair behind your head. Do not wear a necktie,
scarf, loose clothing, or necklace when you work near
machine tools or moving parts. If these items were to get
caught, severe injury could result.
Remove rings and other jewelry to prevent electrical
shorts and entanglement in moving parts.
Moving Parts
TS228 –UN–23AUG88
DX,LOOSE –19–04JUN90–1/1
CTM86 (20MAR01)
01-000-4
P
OWERTECH
8.1 L Diesel Engines — Base Engine
PN=16
032001
Safety
Work In Ventilated Area
Engine exhaust fumes can cause sickness or death. If it is
necessary to run an engine in an enclosed area, remove
the exhaust fumes from the area with an exhaust pipe
extension.
If you do not have an exhaust pipe extension, open the
doors and get outside air into the area
01
000
5
Work in Clean Area
Before starting a job:
• Clean work area and machine.
• Make sure you have all necessary tools to do your job.
• Have the right parts on hand.
• Read all instructions thoroughly; do not attempt
shortcuts.
Engine exhaust fumes
TS220 –UN–23AUG88
DX,AIR –19–17FEB99–1/1
T6642EJ –UN–18OCT88
Clean Work Area
CTM86 (20MAR01)
01-000-5
P
OWERTECH
DX,CLEAN –19–04JUN90–1/1
8.1 L Diesel Engines — Base Engine
PN=17
032001
01
000
Remove Paint Before Welding or Heating
6
Avoid potentially toxic fumes and dust.
Hazardous fumes can be generated when paint is heated
by welding, soldering, or using a torch.
Remove paint before heating:
• Remove paint a minimum of 76 mm (3 in.) from area to
be affected by heating.
• If you sand or grind paint, avoid breathing the dust.
Wear an approved respirator.
• If you use solvent or paint stripper, remove stripper with
soap and water before welding. Remove solvent or
paint stripper containers and other flammable material
from area. Allow fumes to disperse at least 15 minutes
before welding or heating.
Do all work in an area that is ventilated to carry toxic
fumes and dust away.
Safety
TS220 –UN–23AUG88
Dispose of paint and solvent properly.
Avoid Heating Near Pressurized Fluid Lines
Flammable spray can be generated by heating near
pressurized fluid lines, resulting in severe burns to
yourself and bystanders. Do not heat by welding,
soldering, or using a torch near pressurized fluid lines or
other flammable materials. Pressurized lines can be
accidentally cut when heat goes beyond the immediate
flame area.
DX,PAINT –19–22OCT99–1/1
TS953 –UN–15MAY90
Flammable Spray
CTM86 (20MAR01)
01-000-6
P
OWERTECH
DX,TORCH –19–03MAR93–1/1
8.1 L Diesel Engines — Base Engine
PN=18
032001
Safety
Illuminate Work Area Safely
Illuminate your work area adequately but safely. Use a
portable safety light for working inside or under the
machine. Make sure the bulb is enclosed by a wire cage.
The hot filament of an accidentally broken bulb can ignite
spilled fuel or oil.
01
000
7
Use Proper Lifting Equipment
Lifting heavy components incorrectly can cause severe
injury or machine damage.
Follow recommended procedure for removal and
installation of components in the manual.
Work Area Safely
TS223 –UN–23AUG88
DX,LIGHT –19–04JUN90–1/1
TS226 –UN–23AUG88
Proper Lifting Equipment
CTM86 (20MAR01)
01-000-7
P
OWERTECH
DX,LIFT –19–04JUN90–1/1
8.1 L Diesel Engines — Base Engine
PN=19
032001
01
000
Construct Dealer-Made Tools Safely
8
Faulty or broken tools can result in serious injury. When
constructing tools, use proper, quality materials and good
workmanship.
Do not weld tools unless you have the proper equipment
and experience to perform the job.
Safety
Practice Safe Maintenance
Understand service procedure before doing work. Keep
area clean and dry.
Never lubricate, service, or adjust machine while it is
moving. Keep hands, feet , and clothing from
power-driven parts. Disengage all power and operate
controls to relieve pressure. Lower equipment to the
ground. Stop the engine. Remove the key. Allow machine
to cool.
Securely support any machine elements that must be
raised for service work.
Construct Dealer-Made Tools Safely
LX1016749 –UN–01JUL97
DPSG,OUO1004,899 –19–19MAY99–1/1
Keep all parts in good condition and properly installed. Fix
damage immediately. Replace worn or broken parts.
Remove any buildup of grease, oil, or debris.
On self-propelled equipment, disconnect battery ground
cable (-) before making adjustments on electrical systems
or welding on machine.
On towed implements, disconnect wiring harnesses from
tractor before servicing electrical system components or
welding on machine.
CTM86 (20MAR01)
01-000-8
P
OWERTECH
Keep Area Clean
DX,SERV –19–17FEB99–1/1
8.1 L Diesel Engines — Base Engine
PN=20
TS218 –UN–23AUG88
032001
Safety
Use Proper Tools
Use tools appropriate to the work. Makeshift tools and
procedures can create safety hazards.
Use power tools only to loosen threaded parts and
fasteners.
For loosening and tightening hardware, use the correct
size tools. DO NOT use U.S. measurement tools on
metric fasteners. Avoid bodily injury caused by slipping
wrenches.
Use only service parts meeting John Deere specifications.
Dispose of Waste Properly
01
000
9
TS779 –UN–08NOV89
Proper Tools
DX,REPAIR –19–17FEB99–1/1
Improperly disposing of waste can threaten the
environment and ecology. Potentially harmful waste used
with John Deere equipment include such items as oil, fuel,
coolant, brake fluid, filters, and batteries.
Use leakproof containers when draining fluids. 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.
Air conditioning refrigerants escaping into the air can
damage the Earth’s atmosphere. Government regulations
may require a certified air conditioning service center to
recover and recycle used air conditioning refrigerants.
Inquire on the proper way to recycle or dispose of waste
from your local environmental or recycling center, or from
your John Deere dealer.
Recycle Waste
TS1133 –UN–26NOV90
DX,DRAIN –19–03MAR93–1/1
CTM86 (20MAR01)
01-000-9
P
OWERTECH
8.1 L Diesel Engines — Base Engine
PN=21
032001
01
000
Live With Safety
10
Before returning machine to customer, make sure
machine is functioning properly, especially the safety
systems. Install all guards and shields.
Safety
Safety Systems
TS231 –19–07OCT88
DX,LIVE –19–25SEP92–1/1
CTM86 (20MAR01)
01-000-10
P
OWERTECH
8.1 L Diesel Engines — Base Engine
PN=22
032001
Engine Model Designation
JOHN DEERE ENGINE MODEL—6081
John Deere engine model designation includes number of
cylinders, displacement in liters, aspiration, user code, and
application code. For example:
6081 HRW01 Engine
6 ............................................................................ Number of cylinders
Z ........................................................................................ Zweibrucken
Application Code
001, etc. ..... See ENGINE APPLICATION CHART, later in this Group
Group 001
Engine Identification
01
001
1
CTM86 (20MAR01)
01-001-1
P
OWERTECH
RG,RG34710,1021 –19–23OCT97–1/1
8.1 L Diesel Engines — Base Engine
PN=23
032001
01
001
Engine Serial Number Plate Information
2
IMPORTANT: The engine serial number plate can be
easily destroyed. Remove the plate or
record the information elsewhere,
before “hot tank” cleaning the block.
Engine Serial Number (A)
Each engine has a 13-digit John Deere engine serial
number identifying the producing factory, engine model
designation, and a 6-digit sequential number. The
following is an example:
6081H ........................................................... Engine model designation
000000 .......................................................... Sequential serial number
Factory Code
RG ............................................................... Waterloo Engine Works
Engine Model Designation
6801H .................................... (See ENGINE MODEL DESIGNATION.)
Sequential Number
000000 .......................................................... 6-digit sequential number
The engine serial number plate is located either on the
right-hand side of engine between the oil filter base and
fuel injection pump (viewed from flywheel end) or on the
left-hand side of the engine directly above the starter
motor.
Engine Application Data (B)
The second line of information on the engine serial
number plate identifies the engine/Deere machine or OEM
relationship. SeeENGINE APPLICATION CHART later in
this group.
A—Engine Serial Number
B—Engine Application Data
CTM86 (20MAR01)
01-001-2
P
OWERTECH
RG,RG34710,1022 –19–19MAY99–1/1
8.1 L Diesel Engines — Base Engine
PN=24
032001
Engine Option Code Label
Engine Identification
01
001
3
Option Code Label
In addition to the serial number plate, later OEM
engines have an engine option code label affixed to
the rocker arm cover. These codes indicate which of
the engine options were installed on your engine at the
RG11074 –UN–14AUG00
factory. When in need of parts or service, furnish your
authorized servicing dealer or engine distributor with
these numbers.
DPSG,OUO1004,900 –19–19MAY99–1/1
CTM86 (20MAR01)
01-001-3
P
OWERTECH
8.1 L Diesel Engines — Base Engine
PN=25
032001
01
001
Engine Application Chart (John Deere
4
Agricultural Equipment)
Machine ModelEngine Model
DES MOINES—COTTON PICKERS
OEM Engine (Tier II Emissions Certified) ........................... 6081HF070
RG41183,0000024 –19–25JAN01–1/1
RG41183,000003A –19–28FEB01–1/1
CTM86 (20MAR01)
01-001-5
P
OWERTECH
8.1 L Diesel Engines — Base Engine
PN=27
032001
01
001
Engine Identification
6
CTM86 (20MAR01)
01-001-6
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OWERTECH
8.1 L Diesel Engines — Base Engine
PN=28
032001
Diesel Fuel
Consult your local fuel distributor for properties of the
diesel fuel available in your area.
Group 002
Fuels, Lubricants and Coolant
01
002
1
Fuel lubricity should pass a minimum of 3100 gram
load level as measured by the BOCLE scuffing test.
In general, diesel fuels are blended to satisfy the low
temperature requirements of the geographical area in
which they are marketed.
Diesel fuels specified to EN 590 or ASTM D975 are
recommended.
In all cases, the fuel shall meet the following
properties:
Cetane number of 40 minimum. Cetane number
greater than 50 is preferred, especially for
temperatures below -20°C (-4°F) or elevations above
1500 m (5000 ft).
Cold Filter Plugging Point (CFPP) below the
expected low temperature OR Cloud Point at least
5°C(9°F) below the expected low temperature.
Sulfur content:
• Sulfur content should not exceed 0.5%. Sulfur
content less than 0.05% is preferred.
• If diesel fuel with sulfur content greater than 0.5%
sulfur content is used, reduce the service interval for
engine oil and filter by 50%.
• DO NOT use diesel fuel with sulfur content greater
than 1.0%.
DO NOT mix used engine oil or any other type of
lubricant with diesel fuel.
RG41165,0000071 –19–13MAR01–1/1
CTM86 (20MAR01)
01-002-1
P
OWERTECH
8.1 L Diesel Engines — Base Engine
PN=29
032001
Fuels, Lubricants and Coolant
01
002
Bio-Diesel Fuel
2
Bio-diesel fuels may be used ONLY if the fuel
properties meet DIN 51606 or equivalent specification.
It has been shown that bio-diesel fuels have been
found to improve lubricity in concentrations up to 5%
blend in petroleum diesel fuel.
When using a blend of bio-diesel fuel with fuel pumps,
the oil level MUST be checked daily when the air
temperature is -10° C (14° F) or lower. If oil becomes
diluted with fuel, oil change intervals must be
shortened accordingly.
IMPORTANT: Raw pressed vegetable oils are NOT
acceptable for use for fuel in any
concentration in John Deere
engines. These oils do not burn
completely, and will cause engine
failure by leaving deposits on
injectors and in the combustion
chamber.
Users of bio-diesel fuel should always remember that a
major selling merit is its ability to biodegrade, so the
storage and handling of this fuel is very important. This
importance can be seen in the following areas of
concern:
• The quality of the fresh fuel,
• Water content of the fuel,
• Problems due to aging of the fuel.
Potential problems resulting from deficiencies in the
above areas when using bio-diesel fuel in
concentrations above 5% may lead to the following
symptoms:
• Power loss and deterioration of performance,
• Fuel leakage,
• Corrosion of fuel injection equipment,
• Coked/blocked injector nozzles, leading to poor
atomization of fuel,
• Filter plugging,
• Lacquering/seizure of internal components,
• Sludge and sediments,
• Reduced service life.
CTM86 (20MAR01)
Continued on next page
01-002-2
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OWERTECH
RG41165,0000034 –19–13MAR01–1/2
8.1 L Diesel Engines — Base Engine
PN=30
032001
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