Description
John Deere 3940 3950 3960 and 3970 Forage Harvesters Technical Manual (TM1203)
John Deere 3940 3950 3960 and 3970 Forage Harvesters INDEX:
SECTION IO—GENERAL INFORMATION
Group 05—Safety
Group IO—Specifications
Group 15—GeneraI Information
Group 20—1-ubricants
SECTION 20—DRlVE TRAIN
Group IO—Diagnosing Malfunctions
Group 15—PTO Hookup—RecircuIating 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—HYDRAULlC SYSTEM
Group 05—GeneraI Information
Group IO—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—ELECTRlCAL SYSTEM
Group 05—Component Location
Group IO—System Functional Checks and
Diagnosing Malfunctions
Group 15—Tests and Adjustments
Group 20—Harness Repair
Group 25—1RON-GARDTM Metal Detector
(3950/3970)
Group 30—SPOUT-TRAKTb’ (3950/3970)
Group 35—Downstop and Float Systems
(3950/3970)
Group 40—ROW-TRAKT’/ (3950/3970)
Group 45—EIectricaI Diagrams
SECTION 50—CUTTERHEAD ASSEMBLY
Group 05—Diagnosing Malfunctions
Group Io—Feed Rolls—3940/3960
Group II—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 GO—MISCELLANEOUS
Group 05—Auger
Group IO—Whee1s
Group 15—Fan and Spout
SECTION 99—DEALER FABRICATED TOOLS
Group 05—DeaIer Fabricated Tools
Index
