Description
John Deere 3940 3950 3960 3970 Service Manual is a technical service and repair manual for the John Deere 3940, 3950, 3960 and 3970 forage harvesters. It provides structured maintenance, fault diagnosis, testing, adjustment and repair information for the machine systems identified in the manual.
This digital PDF reference is intended for servicing the forage harvester drivetrain, hydraulic and electrical systems, cutterhead assembly and associated machine components. The contents include diagnostic procedures, component information, electrical diagrams, system checks and adjustment-related material, with model-specific coverage identified where applicable.
WHAT THIS MANUAL CONTAINS
- General Information – safety information, machine specifications, general service information and lubricant guidance.
- Drive Train Diagnosis – procedures for diagnosing drive-train malfunctions.
- PTO Hookup Systems – information for PTO hookup systems including the recirculating ball slip type, non-metallic bushing type and Grobe spline type arrangements.
- Powershaft – service information for the forage harvester powershaft assembly.
- Bevel Gear Case – technical coverage of the bevel gear case.
- Feed Roll Gear Case – service information for the feed roll gear case.
- Feed Roll Drives – information for diagnosing and servicing the feed roll drive system.
- Hydraulic System General Information and Diagnosis – hydraulic system fundamentals and procedures for diagnosing hydraulic malfunctions.
- Electrohydraulic Valve – service information for the electrohydraulic valve.
- Hydraulic Cylinders – coverage of the tongue position cylinder, hydraulic shift cylinders, cutterhead lift system and spout cap cylinder.
- Hydraulic Downstop and Spout Controls – hydraulic downstop coverage for the 3940 and 3960, together with the spout control motor and flow divider valve.
- Electrical System Component Location and Diagnosis – component locations, system functional checks and procedures for diagnosing electrical malfunctions.
- Electrical Tests, Adjustments and Harness Repair – electrical tests and adjustments, harness repair information and electrical diagrams.
- IRON-GARD Metal Detector – system information for the 3950 and 3970 models.
- SPOUT-TRAK – electrical and system coverage for the 3950 and 3970 spout tracking system.
- Downstop and Float Systems – model-specific coverage for the 3950 and 3970.
- ROW-TRAK – system information for the 3950 and 3970 row tracking system.
- Cutterhead Assembly – malfunction diagnosis, feed rolls for the 3940/3960 and 3950/3970, smooth roll scraper, stationary knife and adjuster, radius and feed roll arms, knife sharpener, cutterhead and bearings.
- Miscellaneous Machine Components – auger, wheels, fan and spout service information.
- Dealer-Fabricated Tools – information relating to dealer-fabricated service tools.
MODELS COVERED
- John Deere 3940 Forage Harvester
- John Deere 3950 Forage Harvester
- John Deere 3960 Forage Harvester
- John Deere 3970 Forage Harvester
Model-specific sections are clearly identified in the contents. The manual includes separate coverage for systems and components fitted to particular model groups, including the hydraulic downstop on the 3940 and 3960 and the IRON-GARD, SPOUT-TRAK, downstop and float, and ROW-TRAK systems on the 3950 and 3970.
MANUAL DETAILS
Manufacturer: John Deere
Models Covered: 3940, 3950, 3960 and 3970
Machine Type: Forage harvesters
Manual Type: Service technical manual
Publication / Manual Number: TM1203
Format: Digital PDF
Language: English
The John Deere 3940 3950 3960 3970 Service Manual is arranged by numbered sections and groups, making it practical to locate information for a particular machine system. It is suitable as a workshop reference when carrying out servicing, fault finding, electrical checks, hydraulic diagnosis, cutterhead work and drivetrain repairs on the covered forage harvesters.
WHAT HAPPENS AFTER PURCHASE?
After purchase you will instantly receive our download information file by email. Your manual will then be manually checked and sent to the email address used during checkout, usually within minutes and normally within 1 hour.
WHY BUY FROM AGRIMANUAL?
- Established in 1995 supplying technical manuals
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