John Deere 670B 672B 770B Service Repair Manual.pdf

670B, 672B 770B, 770BH
772B, 772BH Motor
Graders Repair
REPAIR TECHNICAL MANUAL
Graders models 670B; HFWD models 672B, 770BH, 772BH
TM1453 22 FEB 05 (ENGLISH)
For complete service information also see:
670B, 672B 770B, 770BH 772B, 772BH Motor Graders Diagnostic TM1452
Series 300, 3029, 4039, 4045, 6059 and 6068 Diesel Engines CTM8
Alternators and Starting Motors CTM77
Radial Piston Pumps CTM7
Series 400, 6076 Diesel Engines CTM42
Series 300 - 3179,4239,6359,4276,6414 Diesel Engines CTM4
Series 400 6466 Diesel Engines CTM1

John Deere Construction and Forestry
Pinted by Belgreen

tm1453-REPAIR TECHNICAL MANUAL (g) by Belgreen v2.5
<- Go to Global Table of contents tm1453-REPAIR TECHNICAL MANUAL
Table of contents
FOREWORD
Section I - GENERAL INFORMATION
Group I - Safety
Group II - General Specifications
Group III - Torque Values
Group IV - Fuels And Lubrication
Section 01 - WHEELS
Group 0110 - Powered Wheels And Fastenings
Section 02 - AXLES AND SUSPENSION SYSTEMS
Group 0230 - Non-Powered Wheel Axles
Group 0250 - Axle Shafts, Bearings, And Reduction Gears
Group 0260 - Hydraulic System
Section 03 - TRANSMISSION
Group 0300 - Removal And Installation
Group 0315 - Controls Linkage
Group 0350 - Gears, Shafts, Bearings, And Power Shift Clutch
Section 04 - ENGINE
Section 05 - ENGINE AUXILIARY SYSTEM
Group 0505 - Cold Weather Starting Aids
Group 0510 - Cooling System
Group 0515 - Speed Controls
Group 0520 - Intake System
Group 0560 - External Fuel Supply Systems
Section 07 - DAMPENER DRIVE
Group 0752 - Elements
Section 08 - TRANSFER DRIVE
Group 0851 - Gears, Shafts, And Bearings
Section 09 - STEERING SYSTEM
Group 0920 - Power Steering
Section 10 - SERVICE BRAKES
Group 1011 - Active Elements
Section 11 - PARK BRAKE
Group 1111 - Active Elements
Section 16 - ELECTRICAL SYSTEM
Group 1671 - Batteries, Support And Cables
Group 1672 - Alternator, Regulator And Charging System Wiring
Group 1673 - Lighting System
Group 1674 - Wiring Harness And Switches
Group 1675 - System Controls
Group 1677 - Motors And Actuators
Section 17 - FRAME, CHASSIS OR SUPPORTING STRUCTURE
Group 1740 - Frame Installation
Section 18 - OPERATOR’S STATION
Group 1810 - Operator Enclosure

Group 1821 - Seat And Seat Belt
Group 1830 - Heating And Air Conditioning
Section 21 - MAIN HYDRAULIC SYSTEM
Section 34 - GRADING DEVICE
Group 3440 - Frames
Group 3450 - Circle Gearbox
Section 42 - GROUND CONDITIONING TOOL
Group 4240 - Frames
Section 99 - DEALER FABRICATED TOOLS
Group 9900 - Dealer Fabricated Tools

GENERAL INFORMATION (g) by Belgreen v2.0
Section I page 1
<- Go to Section TOC tm1453-REPAIR TECHNICAL MANUAL
Foreword
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.
Live with safety: Read the safety messages in the introduction of this manual and the cautions presented throughout the text
of 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.
Technical manuals are divided in two parts: repair and operation and tests. Repair sections tell how to repair the components.
Operation and tests sections help you identify the majority of routine failures quickly.
Information is organized in groups for the various components requiring service instruction. At the beginning of each group are
summary listings of all applicable essential tools, service equipment and tools, other materials needed to do the job, service
parts kits, specifications, wear tolerances, and torque values.
Technical Manuals are concise guides for specific machines. They are on-the-job guides containing only the vital information
needed for diagnosis, analysis, testing, and repair.
Fundamental service information is available from other sources covering basic theory of operation, fundamentals of
troubleshooting, general maintenance, and basic type of failures and their causes.

Section I - GENERAL INFORMATION
Table of contents
Group I - Safety......................................................................................................................................................... 1
Handle Fluids Safely-Avoid Fires .................................................................................... 1
Prevent Battery Explosions ........................................................................................... 1
Prepare for Emergencies............................................................................................... 1
Prevent Acid Burns .................................................................................................... 3
Handle Chemical Products Safely ................................................................................... 3
Avoid High-Pressure Fluids........................................................................................... 4
Park Machine Safely................................................................................................... 4
Support Machine Properly
Wear Protective Clothing
.......................................................................................... 5
. .......................................................................................... 6
Work in Clean Area .................................................................................................... 6
Service Machines Safely
Work In Ventilated Area
............................................................................................ 6
............................................................................................. 7
Illuminate Work Area Safely.......................................................................................... 7
Replace Safety Signs .................................................................................................. 8
Use Proper Lifting Equipment........................................................................................ 8
Remove Paint Before Welding or Heating.......................................................................... 8
Avoid Heating Near Pressurized Fluid Lines.......................................................................10
Keep ROPS Installed Properly .......................................................................................10
Service Tires Safely...................................................................................................11
Avoid Harmful Asbestos Dust .......................................................................................11
Practice Safe Maintenance ..........................................................................................13
Use Proper Tools......................................................................................................13
Dispose of Waste Properly..........................................................................................14
Live With Safety ......................................................................................................14
Group II - General Specifications ......................................................................................................................16
670B And 672B Specifications .....................................................................................16
770B, 770BH, And 772BH Specifications ..........................................................................18
Group III - Torque Values ..................................................................................................................................... 20
Hardware Torque Specifications.....................................................................................20
Metric Bolt and Cap Screw Torque Values.........................................................................21
Additional Metric Cap Screw Torque Values ......................................................................22
Unified Inch Bolt and Cap Screw Torque Values..................................................................24
Check Oil Lines And Fittings ........................................................................................24
Service Recommendations for O-Ring Boss Fittings.............................................................26
Service Recommendations for Flat Face O-Ring Seal Fittings ................................................. 28
Service Recommendations for Metric Series Four Bolt Flange Fitting
Service Recommendations For Inch Series Four Bolt Flange Fittings
. .....................................29
.......................................30
Group IV - Fuels And Lubrication......................................................................................................................31
Fuel Specifications.....................................................................................................31
Low Sulfur Diesel Fuel Conditioner .................................................................................31
Storing Fuel ...........................................................................................................31
Do Not Use Galvanized Containers.................................................................................31
Fuel Tank .............................................................................................................. 31
Circle Drive Gearbox Oil.............................................................................................32
Transmission, Hydraulic System, Tandem Drive, And Wheel Motor Oil....................................... 32
Circle Drive Gearbox Oil.............................................................................................33
Grease .................................................................................................................33
Alternative and Synthetic Lubricants ..............................................................................34
Lubricant Storage ....................................................................................................34

Mixing of Lubricants..................................................................................................34
Diesel Engine Coolant................................................................................................34

Section I - GENERAL INFORMATION Group I: Safety
Section I page 1
Group I - Safety
Handle Fluids Safely-Avoid Fires
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.
Prevent Battery Explosions
Battery Explosions
Keep sparks, lighted matches, and open flame away from the top of battery. Battery gas can explode.
Never check battery charge by placing a metal object across the posts. Use a volt-meter or hydrometer.
Do not charge a frozen battery; it may explode. Warm battery to 16°C (60°F).
Prepare for Emergencies

Section I page 2
First Aid Kit
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.

Section I page 3
Prevent Acid Burns
Acid Burns
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.
If acid is swallowed:
1. Do not induce vomiting.
2. Drink large amounts of water or milk, but do not exceed 2 L (2 quarts).
3. Get medical attention immediately.
Handle Chemical Products Safely

Section I page 4
Material Safety Data Sheet
Direct exposure to hazardous chemicals can cause serious injury. Potentially hazardous chemicals used with John Deere
equipment include such items as lubricants, coolants, paints, and adhesives.
A Material Safety Data Sheet (MSDS) provides specific details on chemical products: physical and health hazards, safety
procedures, and emergency response techniques.
Check the MSDS before you start any job using a hazardous chemical. That way you will know exactly what the risks are and
how to do the job safely. Then follow procedures and recommended equipment.
(See your John Deere dealer for MSDS’s on chemical products used with John Deere equipment.)
Avoid High-Pressure Fluids
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.
Park Machine Safely

Section I page 5
Remove the Key
Before working on the machine:
Lower all equipment to the ground.
Stop the engine and remove the key.
Disconnect the battery ground strap.
Hang a "DO NOT OPERATE" tag in operator station.
Support Machine Properly
Support Properly
Always lower the attachment or implement to the ground before you work on the machine. If you must work on a lifted
machine or attachment, securely support the machine or attachment. If left in a raised position, hydraulically supported
devices can settle or leak down.
Do not support the machine on cinder blocks, hollow tiles, or props that may crumble under continuous load. Do not work
under a machine that is supported solely by a jack. Follow recommended procedures in this manual.
When implements or attachments are used with a tractor, always follow safety precautions listed in the implement operator′s
manual.

Section I page 6
Wear Protective Clothing
Protective Clothing
Wear close fitting clothing and safety equipment appropriate to the job.
Operating equipment safely requires the full attention of the operator. Do not wear radio or music headphones while operating
machine.
Work in Clean Area
Clean Work 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.

Section I page 7
Service Machines Safely
Moving Parts
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.
Work In Ventilated Area
Engine exhaust fumes
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
Illuminate Work Area Safely

Section I page 8
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.
Replace Safety Signs
Safety Signs
Replace missing or damaged safety signs. See the machine operator’s manual for correct safety sign placement.
Use Proper Lifting Equipment
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.
Remove Paint Before Welding or Heating

Section I page 9
Toxic Fumes
Avoid potentially toxic fumes and dust.
Hazardous fumes can be generated when paint is heated by welding, soldering, or using a torch.
Do all work outside or in a well ventilated area. Dispose of paint and solvent properly.
Remove paint before welding or 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.

Section I page 10
Avoid Heating Near Pressurized Fluid Lines
Flammable Spray
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.
Keep ROPS Installed Properly
Roll-Over Protective Structure
Make certain all parts are reinstalled correctly if the roll-over protective structure (ROPS) is loosened or removed for any
reason. Tighten mounting bolts to proper torque.
The protection offered by ROPS will be impaired if ROPS is subjected to structural damage, is involved in an overturn incident,
or is in any way altered by welding, bending, drilling, or cutting. A damaged ROPS should be replaced, not reused.

Section I page 11
Service Tires Safely
Explosive Tire and Rim Parts
Explosive separation of a tire and rim parts can cause serious injury or death.
Do not attempt to mount a tire unless you have the proper equipment and experience to perform the job.
Always maintain the correct tire pressure. Do not inflate the tires above the recommended pressure. Never weld or heat a
wheel and tire assembly. The heat can cause an increase in air pressure resulting in a tire explosion. Welding can structurally
weaken or deform the wheel.
When inflating tires, use a clip-on chuck and extension hose long enough to allow you to stand to one side and NOT in front of
or over the tire assembly. Use a safety cage if available.
Check wheels for low pressure, cuts, bubbles, damaged rims or missing lug bolts and nuts.
Avoid Harmful Asbestos Dust

Section I page 12
Asbestos Dust
Avoid breathing dust that may be generated when handling components containing asbestos fibers. Inhaled asbestos fibers
may cause lung cancer.
Components in products that may contain asbestos fibers are brake pads, brake band and lining assemblies, clutch plates, and
some gaskets. The asbestos used in these components is usually found in a resin or sealed in some way. Normal handling is
not hazardous as long as airborne dust containing asbestos is not generated.
Avoid creating dust. Never use compressed air for cleaning. Avoid brushing or grinding material containing asbestos. When
servicing, wear an approved respirator. A special vacuum cleaner is recommended to clean asbestos. If not available, apply a
mist of oil or water on the material containing asbestos.
Keep bystanders away from the area.

Section I page 13
Practice Safe Maintenance
Keep Area Clean
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.
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.
Use Proper Tools

Section I page 14
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
Recycle Waste
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.
Live With Safety

Section I - GENERAL INFORMATION Group II: General Specifications
Section I page 15
Safety Systems
Before returning machine to customer, make sure machine is functioning properly, especially the safety systems. Install all
guards and shields.

Section I page 16
Group II - General Specifications
670B And 672B Specifications
670B And 672B Diagram
NOTE: Specifications and design subject to change without notice. Wherever applicable, specifications are in accordance with SAE standards. Except where otherwise
noted, these specifications are based on a machine with 13.00-24, 8-PR tubeless tires, 3.65 m (12 ft) moldboard with 152 mm (6 in) cutting edge, and standard
equipment. Weights include lubricants, coolants, full fuel tank and 79 kg (175 lb) operator.
A-Height to top of exhaust 3.24 m (10 ft 8 in)
B-
[ Height to top of cab Add 210 m (8.3 in.) for full height cab. Add 25.4 mm (1.0 in.) for cab with air conditioning ]
3.06 m (10 ft 1 in)
C-Height to top of blade lift cylinders 2.92 m (9 ft 7 in)
D-Bladebase 2.67 m (8 ft 9 in)
E-Tandem axle spacing 1.54 m (5 ft 1 in)
F-Wheelbase 5.97 m (19 ft 7 in)
G-Overall length 8.31 m (27 ft 3 in)
H-Overall length with scarifier 9.02 m (29 ft 7 in)
I-Overall length with scarifier and ripper 9.73 m (31 ft 11 in)
SAE Operating Weight: On Front Wheels On Rear Wheels Total
Standard equipment 670B 3910 kg (8,620 lb) 8895 kg (19,610 lb) 12 805 kg (28,230 lb)
672B 4227 kg (9,320 lb) 9483 kg (20,910 lb) 13 710 kg (30,230 lb)
Standard equipment w/scarifier
670B 4790 kg (10,560 lb) 8800 kg (19,400 lb) 13 590 kg (29,960 lb)
672B 5129 kg (11,310 lb) 9365 kg (20,650 lb) 14 494 kg (31,960 lb)
Standard equipment w/scarifier and ripper
670B 4440 kg (9,790 lb) 10 270 kg (22,640 lb) 14 710 kg (32,430 lb)
672B 4794 kg (10,570 lb) 10 857 kg (23,940 lb) 15 651 kg (34,510 lb)

Section I page 17
Engine: John Deere 6068T
670B/672B
Rated Power @2300 rpm:
Net 101 kw (1355 hp)
Type 4-stroke cycle, turbocharged diesel
Bore and stroke 4.19 x 5.00 in. (106.4 x 127 mm)
Number of cylinders 6
Displacement 6.785 L (414 cu in.)
Lubrication Pressure system with full-flow filter
Cooling fan Suction type
Aspirated air cleaner Dry
Electrical system 24-volt with 42 amp alternator
Batteries (two 12-volt) Reserve capacity: 180 minutes
Transmission
Type Direct drive, full power shift with planetary gear reductions. Foot inching pedal.
Travel Speeds
Forward km/h mph
1 3.5 2.2
2 5.1 3.2
3 7.9 4.9
4 10.3 6.4
5 13.5 8.4
6 17.5 10.9
7 22.9 14.2
8 39.3 24.4
Reverse
1 4.7 2.9
2 6.6 4.1
3 10.1 6.3
4 13.2 8.2
Hydraulic System (Standard and Optional):
Closed center, pressure controlled, variable displacement pumps.
Standard pump 4.0 cu in. (65 cu cm), 37.6 gpm at 2300 rpm
Optional pump 6.0 cu in. (98 cu cm), 54.8 gpm at 2300 rpm
Refill Capacities Metric U.S.
Fuel tank 265 L 70 gal
Cooling system 26.5 L 7 gal
Engine lubrication, including filter 19 L 20 qt
Transmission and hydraulic system (with scarifier, add 5.6 L (1.5 gal) 53 L 14 gal
Tandem housings (each) 19 L 5 gal
Circle gearbox (earlier machines)
(later machines)
2.8 L
3.8 L
3 qt
4 qt
Wheel motors (each) (672B 7.5 L 2 gal

Section I page 18
770B, 770BH, And 772BH Specifications
770B, 770BH, And 772BH Diagram
NOTE: Specifications and design subject to change without notice. Wherever applicable, specifications are in accordance with SAE standards. Except where otherwise
noted, these specifications are based on a machine with 14.00-24, 12-PR tubeless tires, 3.65 m (12 ft) moldboard with 152 mm (6 in) cutting edge, and standard
equipment. Weights include lubricants, coolants, full fuel tank and 79 kg (175 lb) operator.
A-Height to top of exhaust 3.16 m (10 ft 5 in)
B-
[ Height to top of cab Add 210 m (8.3 in.) for full height cab. Add 25.4 mm (1.0 in.) for cab with air conditioning ]
3.09 m (10 ft 2 in)
C-Height to top of blade lift cylinders 2.95 m (9 ft 8 in)
D-Bladebase 2.67 m (8 ft 9 in)
E-Tandem axle spacing 1.54 m (5 ft 1 in)
F-Wheelbase 5.97 m (19 ft 7 in)
G-Overall length 8.51 m (26 ft 11 in)
H-Overall length with scarifier 9.22 m (30 ft 3 in)
I-Overall length with scarifier and ripper 9.93 m (32 ft 7 in)
SAE Operating Weight: On Front Wheels On Rear Wheels Total
Standard equipment 770B, 770BH 3946 kg (8,700 lb) 10 249 kg (22,600 lb) 14 195 kg (31,300 lb)
772BH 4263 kg (9,400 lb) 10 454 kg (23,050 lb) 14 717 kg (32,450 lb)
Standard equipment w/scarifier
770B, 770BH 4825 kg (10,640 lb) 10 155 kg (22,390 lb) 14 980 kg (33,030 lb)
772BH 5166 kg (11,390 lb) 10 336 kg (22,790 lb) 15 502 kg (34,180 lb)
Standard equipment w/scarifier and ripper
770B, 770BH 4476 kg (9,870 lb) 11 624 kg (25,630 lb) 16 100 kg (35,500 lb)
772BH 4830 kg (10,650 lb) 11 828 kg (26,080 lb) 16 658 kg (36,730 lb)
Engine: John Deere 6076A (770BH, 772BH), 6076T (770B)
770B

Section I page 19
Section I - GENERAL INFORMATION Group III: Torque Values
Engine: John Deere 6076A (770BH, 772BH), 6076T (770B)
Net 116 kW (155 hp)
770BH/772BH
Net
In gears 1-3 116 kW (155 hp)
In gears 4-8 138 kW (185 hp)
Type 4-stroke cycle, turbocharged and intercooled diesel
Bore and stroke 116 x 121 mm (4.56 x 4.75 in.)
Number of cylinders 6
Displacement 7.638 L (466 cu in.)
Lubrication Pressure system with full-flow filter
Cooling fan Suction type
Aspirated air cleaner Dry
Electrical system 24-volt with 42 amp alternator
Batteries (two 12-volt) Reserve capacity: 180 minutes
Transmission
Type Direct drive, full power shift with planetary gear reductions. Foot inching pedal.
Travel Speeds
Forward km/h mph
1 3.7 2.3
2 5.3 3.3
3 8.4 5.2
4 10.8 6.7
5 14.3 8.9
6 18.5 11.5
7 23.7 14.7
8 40.6 25.2
Reverse
1 4.8 3.0
2 6.9 4.3
3 10.8 6.7
4 13.8 8.6
Hydraulic System (Standard and Optional):
Closed center, pressure controlled, variable displacement pumps.
Standard pump 6.0 cu in. (98 cu cm), 52.4 gpm at 2200 rpm
Refill Capacities Metric U.S.
Fuel tank 341 L 90 gal
Cooling system 36 L 38 qt
Engine lubrication, including filter 24.6 L 26 qt
Transmission and hydraulic system (with scarifier, add 5.6 L (1.5 gal) 87.4 L 23 gal
Tandem housings (each) 19 L 5 gal
Circle gearbox 3.8 L 4 qt
Wheel motors (each) (772BH) 11.3 L 3 gal

Section I page 20
Group III - Torque Values
Hardware Torque Specifications
Check cap screws and nuts to be sure they are tight. If hardware is loose, tighten to torque shown on the following charts
unless a special torque is specified.

Section I page 21
Metric Bolt and Cap Screw Torque Values
Metric Torque Values

Section I page 22
Additional Metric Cap Screw Torque Values
T-Bolt
H-Bolt
M-Bolt
CAUTION:
Use only metric tools on metric hardware. Other tools may not fit properly. They may slip and cause
injury.
Check tightness of cap screws periodically. Torque values listed are for general use only. Do not use these values if a different
torque value or tightening procedure is listed for a specific application.
Shear bolts are designed to fail under predetermined loads. Always replace shear bolts with identical grade.
Fasteners should be replaced with the same or higher grade. If higher grade fasteners are used, these should only be tightened
to the strength of the original.
Make sure fastener threads are clean and you properly start thread engagement. This will prevent them from failing when
tightening.
Tighten cap screws having lock nuts to approximately 50 percent of amount shown in chart.

Section I page 23
Metric Cap Screw Torque Values
[ METRIC CAP SCREW TORQUE VALUES Torque tolerance is ±10%. ]
Nominal Dia
T-Bolt H-Bolt M-Bolt
N·m lb-ft N·m lb-ft N·m lb-ft
8 29 21 20 15 10 7
10 63 46 45 33 20 15
12 108 80 88 65 34 25
14 176 130 137 101 54 40
16 265 195 206 152 78 58
18 392 289 294 217 118 87
20 539 398 392 289 167 125
22 735 542 539 398 216 159
24 931 687 686 506 274 202
27 1372 1012 1029 759 392 289
30 1911 1410 1421 1049 539 398
33 2548 1890 1911 1410 735 542
36 3136 2314 2401 1772 931 687

Section I page 24
Unified Inch Bolt and Cap Screw Torque Values
Inch Torque Values
Check Oil Lines And Fittings

Section I page 25
Escaping Fluid Under Pressure
CAUTION:
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 may call
the Deere & Company Medical Department in Moline, Illinois, or other knowledgeable medical source.
Check all oil lines, hoses, and fittings regularly for leaks or damage. Make sure all clamps are in position and tight. Make sure
hoses are not twisted or touching moving machine parts. If abrasion or wear occurs, replace immediately.
Tubing with dents may cause the oil to overheat. If you find tubing with dents, install new tubing immediately.
IMPORTANT:
Tighten fittings as specified in torque chart.
When you tighten connections, use two wrenches to prevent bending or breaking tubing and fittings.

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