🏷️ Basic Information

Make:

Fendt

Model:

309 Vario COM III, 310 Vario COM III, 311 Vario COM III, 312 Vario COM III

Chassis Prefix 309:

336

Chassis Start 309:

1001

Chassis Prefix 310:

337

Chassis Start 310:

1001

Chassis Prefix 311:

338

Chassis Start 311:

1001

Chassis Prefix 312:

339

Chassis Start 312:

1001

Generation:

Vario COM III

👋 Introduction

Target Audience:

Owners, operators, and service technicians of Fendt 309, 310, 311, 312 Vario COM III tractors

Value Proposition:

Provides in-depth resources to save on repair bills and maintain vehicle condition.

Instruction Style:

Step-by-step instructions with detailed exploded pictures

Information Access:

Wealth of information at fingertips, instant download for convenience

📋 Manual Details

Primary Focus:

Workshop Service & Repair

Vehicle Type:

Tractor

Estimated Pages:

Likely extensive, typical for full workshop manuals (e.g., 500+ pages)

Type:

Workshop Service & Repair Manual

Language:

English (implied by description and typical manual content)

Format:

PDF Download

📖 Manual Coverage

Powertrain:

Engine, Transmission (Vario Transmission Unit), Differential, Axle Drive, Front PTO, Live PTO, Front Wheel Drive

Drivetrain:

Axles, Cardan Shaft, Diff Lock Actuation System, Steering Cylinder, Track Rod

Hydraulics:

Hydraulic Pump, Transmission Lubrication System, Pump Drive, ML Range Control, ML Adjustment, Enhanced Control System Valves, Enhanced Control System Pipes, Power Lift (Electrohydraulic EPC Control, External Control, Control Lifting Gear), Hydraulic Implement Actuation System, 3. Hydraulic Circuit, Multi Coupling, Lift Cylinder, Hydraulic Pump Assembly (LS Pump, Transmission Pump, Steering Pump), Hydraulic Pipes, Oil Cooler, Hydraulic Trailer Brake, Hydraulic Equipment, Hydraulic Connections, Central Control Block (ZSB), Valve Assembly, External Pressure Supply, Valve Supplement

Brakes:

Brake System, Handbrake, Cardan Brake, Compressed Air System (Compressor, Brake Fittings, Lines, Electrical Actuation System, Air Tank), Hydraulic Trailer Brake

Steering:

Steering, Steering Wheel, Hydraulic Steering Assembly

Electrical:

Electrical Cables, Cable Loom, Alternator, Starter Lockout, Fuses, Battery System, Starter Motor System, 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

Chassis Frame:

Frame, Front Axle Support, Axle Housing, Suspension, Suspension Valve Fitting, Suspension Pipe, Cab Mount

Operator Station:

Cab, Driver Seat, Cab Mount, Air Conditioning System (Compressor Drive, Coolant Lines, Evaporator, Condenser), Heater, Ventilation, Windscreen Wipers

Attachments Auxiliary:

Front Loader (Mounting Frame), Trailer Hitch (Trailer Hitch Coupling)

Engine Systems:

Cylinder Head, Speed Adjustment, Cooling System, Fuel System, Engine Brake, Cold Start System, Intercooler, Crankcase, Engine Preheater, Lubrication, Injection Pump, Injectors, Governor

Chassis And Suspension:

Front Axle, Front Axle Support, Axle Housing, Suspension, Suspension Valve Fitting, Suspension Pipe, Track Rod, Steering Cylinder, Frame, Cardan Shaft, Diff Lock Actuation System

Cab And Controls:

Vehicle Body Design, Driver Seat, Trailer Hitch, Trailer Hitch Coupling, Cab Mount, Air Conditioning System, Compressor Drive, Coolant Lines, Evaporator, Condenser, Electrical Cables, Cab Heater, Ventilation, Windscreen Wipers, Cable Loom

Power Lift And Hydraulics:

Power Lift, Electrohydraulic EPC Control, External Control, Control Lifting Gear, Three Point Hitch, Lift Arms, Support, Hydraulic Pump Assembly, LS Pump, Transmission Pump, Steering Pump, Hydraulic Pipes, Base Circle, Power Lift Oil Cooler, Hydraulic Trailer Brake

Compressed Air And Braking:

Compressed Air System, Compressor, Brake Fittings, Lines, Electrical Actuation System, Air Tank

Front Loader Systems:

Front Loader Mounting Frame, Hydraulic Implement Actuation System

Electronics And Diagnostics:

Electrics, Alternator, Starter Lockout, Fuses, Battery System, Starter Motor System, Instrument Panel, Terminal, LBS Agricultural Bus System, Transducer, Radar Sensor, E-Box, Transmission Actuator Unit, Drive Switch, Control Panel, Engine EDC, ECU Lift Gear

Diagnostics:

Troubleshooting guides, fault code interpretation (implied by EDC and ECU coverage)

Maintenance:

Scheduled maintenance, fluid changes, lubrication, filter replacements

Repair:

Component removal and installation, overhaul procedures, specific repair instructions

Adjustment Calibration:

Transmission adjustments, hydraulic system calibration, engine speed adjustments

Disassembly Assembly:

Detailed step-by-step instructions with exploded views for major components

Special Tools:

Information on required special tools (Fendias mentioned) for specific tasks.

Technical Information:

Technical Information & Specifications section provides key data for maintenance and repair.

Depth:

Comprehensive workshop level, covering diagnostics, repair, and overhauls

Detail Level:

Step-by-step instructions and detailed exploded pictures

Scope:

Full vehicle service and repair, not just basic maintenance

📊 Manual Specifications

Format:

PDF

Accessibility:

Viewable on PC, Mac, Tablet, Smartphone

Printability:

Printable (entire manual or specific sections)

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Method:

Instant Download

⚙️ Engine Specifications

Engine Type:

Likely Deutz TCD 2012 L04 2V (common for Fendt Vario COM III series, exact specifications to be confirmed in manual)

Emissions Compliance:

COM III (Common Rail Tier 3 / Stage III A)

Horsepower Range:

Approx. 90-120 HP (dependent on specific model 309-312)

Injection System:

Common Rail (implied by COM III), Injection Pump, Injectors

Fuel Type:

Diesel

Type:

Liquid-cooled

Control System:

Engine EDC (Electronic Diesel Control)

Intercooler:

Yes

Cold Start:

Cold Start System, Engine Preheater

Governor:

Yes

🔧 Transmission

Type:

Fendt Vario (Continuously Variable Transmission - CVT)

Control:

Vario Transmission Unit, Transmission Control Unit, ML Range Control, ML Adjustment, Enhanced Control System Valves, Enhanced Control System Pipes, Transmission Actuator Unit, Drive Switch

Lubrication:

Transmission Lubrication System

Hydraulic Integration:

Integrated hydraulic systems for operation and control

Front Wheel Drive:

Engageable

Pto:

Front PTO, Live PTO

Differential:

Differential lock actuation system

📐 Dimensions

Wheelbase:

Specific dimensions vary by model, detailed in manual

Operating Weight:

Specific weights vary by model and configuration, detailed in manual

🛡️ Safety Features

Braking Systems:

Hydraulic Trailer Brake, Cardan Brake, Compressed Air Brakes (if equipped)

Traction Control:

Front wheel drive engagement, differential lock

Operator Protection:

Cab structure, driver seat with safety features (e.g., seatbelt)

💡 Technology Features

Features:

Basic radio and work lighting controls. Advanced infotainment is not a primary focus for this era of tractor.

Features:

Fendt's Vario transmission offers advanced control over speed and implement management. Electronic control systems for lift and hydraulics.

Features:

LBS Agricultural Bus System and Transducers/Sensors indicate integrated electronic data logging and control capabilities.

🔧 Maintenance

Engine Oil Change:

Typically 500 or 1000 hours, depending on operating conditions and oil specification (details in manual)

Hydraulic Fluid Change:

Typically 1000 or 2000 hours (details in manual)

Engine Oil:

Refer to manual for specific API/ACEA ratings (e.g., ACEA E7/E9, API CI-4/CJ-4) and viscosity grades (e.g., SAE 10W-40, 15W-40).

Hydraulic Fluid:

Refer to manual for specific ISO VG ratings (e.g., ISO VG 46, ISO VG 68) and type (e.g., universal tractor transmission oil - UTTO).

Transmission Fluid:

Likely integrated with hydraulic fluid; refer to manual for specific requirements.

Common Problems:

Potential issues with Vario transmission control units, hydraulic pump wear, and common diesel engine component wear (e.g., injectors, EGR system) depending on service history. Specific issues for COM III are detailed in the manual.

Engine Oil Filter:

Exact part numbers will be listed in the manual.

Hydraulic Filter:

Exact part numbers will be listed in the manual.

Preventative Maintenance:

Adherence to scheduled maintenance, regular inspection of fluid levels and component condition, proper air filter care.

📚 Vehicle History

Manufacturer:

Fendt (AGCO Corporation)

Reputation:

Known for high-quality, innovative, and premium agricultural machinery.

Series:

Fendt 300 Vario series represents a mid-range tractor line, with COM III indicating a specific emissions standard update.

Production Period:

COM III models generally correspond to the early to mid-2000s production era, preceding later emission standards.

🏆 Awards & Recognition

Brand Awards:

Fendt tractors have consistently received awards for innovation and technology in the agricultural sector.