This is the COMPLETE Technical Manual for the John Deere 3940, 3950, 3960, 3970 Forage Harvesters. It contains deep information about maintaining, assembly, disassembly and servicing your John Deere 3940, 3950, 3960, 3970 Forage Harvesters.
This manual contains information and data to this model. Has specs, diagrams, and actual real photo illustrations, color schemes. These technical manual is as good as it gets for Diagnosing, Repairing, and Maintenancing John Deere machinery.
Models Covered:
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John Deere 3940 Forage Harvester
John Deere 3950 Forage Harvester
John Deere 3960 Forage Harvester
John Deere 3970 Forage Harvester
Technical Manual Contains:
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SECTION 10—GENERAL INFORMATION
Group 05—Safety
Group 10—Specifications
Group 15—General Information
Group 20—Lubricants
SECTION 20—DRIVE TRAIN
Group 10—Diagnosing Malfunctions
Group 15—PTO Hookup—Recirculating Ball Slip
Group 16—PTO Hookup—Non-Metallic Bushing Type
Group 17—PTO Hookup—Grobe Spline Type
Group 20—Powershaft
Group 25—Bevel Gear Case
Group 30—Feed Roll Gear Case
Group 35—Feed Roll Drives
SECTION 30—HYDRAULIC SYSTEM
Group 05—General Information
Group 10—Diagnosing Malfunctions
Group 15—Electrohydraulic Valve
Group 20—Tongue Position Cylinder
Group 25—Hydraulic Shift Cylinders
Group 30—Cutterhead Lift System
Group 35—Hydraulic Downstop (3940/3960)
Group 40—Spout Cap Cylinder
Group 45—Spout Control Motor
Group 50—Flow Divider Valve
SECTION 40—ELECTRICAL SYSTEM
Group 05—Component Location
Group 10—System Functional Checks and Diagnosing Malfunctions
Group 15—Tests and Adjustments
Group 20—Harness Repair
Group 25—IRON-GARD Metal Detector (3950/3970)
Group 30—SPOUT-TRAK (3950/3970)
Group 35—Downstop and Float Systems (3950/3970)
Group 40—ROW-TRAK (3950/3970)
Group 45—Electrical Diagrams
SECTION 50—CUTTERHEAD ASSEMBLY
Group 05—Diagnosing Malfunctions
Group 10—Feed Rolls—3940/3960
Group 11—Feed Rolls—3950/3970
Group 15—Smooth Roll Scraper—Stationary Knife and Adjuster
Group 20—Radius and Feed Roll Arms
Group 25—Knife Sharpener
Group 30—Cutterhead and Bearings
SECTION 60—MISCELLANEOUS
Group 05—Auger
Group 10—Wheels
Group 15—Fan and Spout
SECTION 99—DEALER FABRICATED TOOLS
Group 05—Dealer Fabricated Tools
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** Model Specification: John Deere 3940, 3950, 3960, 3970 Forage Harvesters
** Publication number: TM1203
** Language: English
** Total Pages: 491
** File Format: PDF
** Requirements: Adobe PDF Reader
** Compatible: All Versions of Windows & Mac, Linux OS, Iphone, Ipad, Android etc…
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