DOWNLOAD COMPLETE TECHNICAL MANUAL FOR JOHN DEERE 3940, 3950, 3960 AND 3970 HARVESTER | PUBLICATION NUMBER - TM1203

The TM1203 technical manual provides comprehensive service and repair documentation for John Deere 3940, 3950, 3960, and 3970 forage harvesters. This essential resource covers detailed specifications, diagnostic procedures, maintenance schedules, and component assembly instructions. Designed for technicians and operators, it delivers the technical depth required for efficient troubleshooting and equipment upkeep. Access reliable guidance to maximize harvester performance and minimize downtime across your fleet.

CONTENT:
GENERAL INFORMATION
Safety
Specifications
General Information
Lubricants
DRIVE TRAIN
Diagnosing Malfunctions
PTO Hookup—Recirculating Ball Slip
PTO Hookup—Non-Metallic Bushing Type
PTO Hookup—Grobe Spline Type
Powershaft
Bevel Gear Case
Feed Roll Gear Case
Feed Roll Drives
HYDRAULIC SYSTEM
General Information
 Diagnosing Malfunctions
Electrohydraulic Valve
Tongue Position Cylinder
Hydraulic Shift Cylinders
Cutterhead Lift System
Hydraulic Downstop (3940/3960)
Spout Cap Cylinder
Spout Control Motor
Flow Divider Valve
ELECTRICAL SYSTEM
Component Location
System Functional Checks and Diagnosing Malfunctions
Tests and Adjustments
Harness Repair
IRON-GARD™ Metal Detector (3950/3970)
SPOUT-TRAK™ (3950/3970)
Downstop and Float Systems (3950/3970)
ROW-TRAK™ (3950/3970)
Electrical Diagrams
CUTTERHEAD ASSEMBLY
Diagnosing Malfunctions
Feed Rolls—3940/3960
Feed Rolls—3950/3970
Smooth Roll Scraper—Stationary Knife and Adjuster
Radius and Feed Roll Arms
Knife Sharpener
Cutterhead and Bearings
MISCELLANEOUS
Auger
Wheels
Fan and Spout
DEALER FABRICATED TOOLS
Dealer Fabricated Tools
Index

TOTAL PAGE - 491

FILE FORMAT - PDF
LANGUAGE - ENGLISH