🏷️ Basic Information

Make:

Fendt

Model:

309 VARIO COM III, 310 VARIO COM III, 311 VARIO COM III, 312 VARIO COM III

Product Name:

FENDT 309 310 311 312 VARIO Tractor Workshop Service Manual PDF Download

Vehicle Type:

Tractor

Emissions Compliance:

COM III (likely Stage III A / Tier 3 emissions standard)

👋 Introduction

Market Position:

Fendt tractors are positioned as premium, high-performance agricultural machinery, known for their advanced technology, efficiency, and comfort, particularly the Vario transmission systems.

Competitive Analysis:

Competes with other major tractor manufacturers like John Deere, Claas, Massey Ferguson, and Case IH in the high-horsepower, technologically advanced segment. Fendt's Vario continuously variable transmission is a key differentiator.

Key Features:

Focus on Vario transmission technology, advanced hydraulics, operator comfort, and integrated electronic control systems. The manual provides detailed insights into these complex systems.

📋 Manual Details

Coverage Areas:

Comprehensive service and repair for Fendt 300 Vario series tractors, including transmission control, axles, brakes, PTO, steering, hydraulic systems, electrical systems, cab, and front loader.

Page Count:

>1100 pages

Manual Type:

Workshop Service Manual / Repair Manual

Language:

English (implied by content and typical for workshop manuals)

Format:

PDF Download

📖 Manual Coverage

Systems Covered:

General Tractor Systems, Transmission Control Unit, Differential, Axle Drive, Handbrake, Housing, Brake System, Vario Transmission Unit, Emergency Control, Clutch Actuation System, Cardan Brake, ML Range Control, Front PTO, Live PTO, Front-Wheel Drive, Hydrodamp, Hydraulic Pump, Transmission Lubrication System, Pump Drive, ML Adjustment, Enhanced Control System Valves, Enhanced Control System Pipes, Front Axle Support, Axle Housing, Suspension, Suspension Valve Fitting, Suspension Pipe, Track Rod, Steering Cylinder, Frame, Cardan Shaft, Diff. Lock Actuation System, Steering, Steering Wheel, Hydraulic Steering Assembly, Vehicle Body, Design, Driver Seat, Trailer Hitch, Trailer Hitch Coupling, Cab Mount, Suspension, Air Conditioning System, Compressor Drive, Coolant Lines, Evaporator, Condenser, Electrical Cables, Cab, Heater, Ventilation, Windscreen Wipers, Cable Loom, Power Lift, Electro-hydraulic EPC Control, External Control, Control Lifting Gear, Three-point Hitch, Lift Arms, Support, Compressor, Brake Fittings, Lines, Electrical Actuation System, Air Tank, Front Loader, Mounting Frame, Hydraulic Implement Actuation System, Hydraulic Circuit, Multi-coupling, Pipes, Lift Cylinder, Electrics, Alternator, Starter Lockout, Fuses, Battery System, Starter Motor System, Front Power Lift, Lift Gear, Cylinder, Pipes, Enhanced Control Power Lift, Frame, Hydraulic Pump Assembly, LS Pump, Transmission Pump, Steering Pump, Hydraulic Pipes, Base Circle, Power Lift, With Oil Cooler, Hydraulic Trailer Brake, Steering, Reversing System, Hydraulic Connections, Central Control Block (ZSB), Valve Assembly, External Pressure Supply, Valve Supplement, Electronics, Instrument Panel, Terminal, LBS - Agricultural Bus System, Transducer, Radar Sensor, E-Box, Transmission Actuator Unit, Drive Switch, Control Panel, Engine EDC, ECU, Lift Gear, Service, Special Tools, FENDIAS.

Engine Management:

Covers Engine EDC (Electronic Diesel Control) and ECU (Electronic Control Unit) for precise fuel injection and engine performance management.

Electrical System:

Detailed coverage of alternator, starter motor system, battery system, fuses, cable looms, and electrical actuation systems, including specific wiring diagrams (implied by 'Cable Loom' and 'Electrical Cables').

Steering System:

Includes hydraulic steering assembly, track rod, steering cylinder, and steering wheel adjustments/repair.

Brake System:

Comprehensive coverage of the main brake system, handbrake, cardan brake, and hydraulic trailer brake fittings and lines.

Pto Systems:

Detailed procedures for Front PTO and Live PTO systems, including engagement and maintenance.

Frame And Body:

Sections on frame construction, axle housings, and vehicle body design elements relevant to service and repair.

Procedures Included:

Detailed repair and service procedures, troubleshooting, diagnostics, maintenance, component replacement, system adjustments, and overhauls.

Maintenance Procedures:

Routine maintenance tasks such as lubrication, fluid changes, filter replacements, and inspections are thoroughly covered.

Technical Depth:

Comprehensive, covering all aspects from basic maintenance to advanced diagnostics and repair, suitable for both DIY enthusiasts and professional mechanics.

Illustrations:

Features detailed illustrations, diagrams, and pictures to guide through procedures.

Hydraulic System:

Extensive coverage including hydraulic pumps (LS Pump, Transmission Pump, Steering Pump), hydraulic circuits, hoses, valves, lift gear, power lift (front and rear), trailer brake hydraulics, and implement actuation.

Chassis And Drivetrain:

Detailed information on front axle support, axle housing, suspension systems, track rods, steering cylinder, frames, cardan shafts, and differential lock actuation.

Cab And Controls:

Covers cab mounting and suspension, driver seat, heating, ventilation, windscreen wipers, air conditioning system (compressor, lines, evaporator, condenser), and the instrument panel.

Special Equipment:

Includes sections on front PTO, live PTO, front wheel drive, trailer hitches (coupling, hydraulic trailer brake), and front loaders (mounting frame, hydraulic implement actuation).

Diagnostics:

Troubleshooting procedures for all major systems, likely including diagnostic codes or procedures related to the FENDIAS electronic system and Engine EDC.

Repair Procedures:

Step-by-step instructions for component removal, installation, adjustment, and overhaul for all covered systems and parts.

Special Tools:

Includes information on specialized tools required for specific repair and maintenance procedures (section 9920).

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-quality digital format with detailed illustrations and diagrams, suitable for printing individual pages as needed.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Format)

File Size:

32 MB

Software Requirements:

Adobe Acrobat Reader, WinZip or WinRAR for extraction.

Operating Systems:

Compatible with all Windows versions and all Mac versions.

⚙️ Engine Specifications

Engine Model:

Deutz TCD 2012 L04 4V

Engine Type:

4-cylinder, Water-cooled, Turbocharged/Intercooled Diesel

Engine Displacement:

4.04 Liters

Engine Manufacturer:

Deutz

Fuel System:

Common Rail Injection (implied by 'COM III' and modern Deutz engines)

🔧 Transmission

Transmission Type:

Fendt Vario (Continuously Variable Transmission - CVT)

Transmission Features:

Fendt Vario system with integrated cruise control and a reverse shuttle functionality controlled electronically.

Features:

Infinitely variable speed control, seamless acceleration and deceleration, electronic management for optimal performance and fuel efficiency.

📐 Dimensions

Wheelbase:

Varies by specific model (detailed in manual)

Operating Weight:

Varies by specific model (detailed in manual)

🛡️ Safety Features

Active Features:

Brake system, handbrake, differential lock actuation system, electronic control systems for stability and safe operation.

Passive Features:

Robust frame and chassis construction, cab safety features (implied).

💡 Technology Features

Infotainment:

While not a primary focus for tractors, the manual covers the 'FENDIAS' electronic system, which manages various tractor functions, diagnostics, and potentially displays operational data. This is analogous to an in-cab information system.

Driver Assistance:

Features like electronic draft control (EPC) for the power lift, suspension control valves, and advanced transmission control contribute to operator assistance and precision operation.

Connectivity:

The LBS (Agricultural Bus System) and various sensors (e.g., radar sensor) indicate a degree of integrated electronic communication and data acquisition for advanced control and diagnostics.

🔧 Maintenance

Service Intervals:

Detailed service intervals for engine oil, transmission fluid, hydraulic fluid, filters, and other maintenance items are covered extensively within the manual. Typical intervals for major items like engine oil are often around 500 hours.

Engine Oil Specification:

Specific API/ACEA classifications and viscosities (e.g., SAE 10W-40, API CJ-4) will be detailed in the manual.

Hydraulic Fluid Specification:

Fendt-specific hydraulic fluid or compatible UTF/HTF meeting required specifications (e.g., ISO VG 46) will be listed.

Transmission Fluid Specification:

Specialized Vario transmission fluid (e.g., Agco Fendt VarioGear) will be specified with required properties and change intervals.

Coolant Specification:

Details on coolant type and mixture ratio for the water-cooled engine will be provided.

Known Issues:

While Fendt tractors are generally reliable, common issues on tractors of this era can include wear on Vario transmission components (especially under heavy use), calibration issues with electronic control units, and potential wear in hydraulic pumps or cylinders. The manual will guide troubleshooting for these and other potential problems.

📚 Vehicle History

Brand Heritage:

Fendt is a German manufacturer renowned for its high-quality, innovative agricultural machinery, particularly known for pioneering the Vario transmission.

Model Evolution:

The 300 Vario series represents a significant advancement in medium-horsepower tractors, integrating Fendt's core Vario technology into a versatile and popular platform. 'COM III' designation refers to emissions compliance standards.

Production Years:

Specific production years for these COM III models would need to be confirmed from further documentation or VIN decoding, but generally align with the mid-2000s to early 2010s for Stage III/Tier 3 emissions standards.