Model:
309 Vario, 310 Vario, 311 Vario, 312 Vario
Generation:
COM III (Common Rail Stage III / Tier 3)
Engine Code Family:
Deutz TCD 2012 L04/L06 (or similar AGCO Power engines)
Market Segment:
Premium compact to mid-size agricultural tractors.
Competitors:
John Deere 5R Series, Massey Ferguson 4700 Series, Claas Arion 400 Series, New Holland T4 Series.
Transmission Type:
Fendt Vario (Continuously Variable Transmission) - a major selling point for efficiency and ease of operation.
Engine Technology:
Common Rail (COM III) technology for improved fuel efficiency, emissions control, and performance.
Coverage:
Complete workshop service and repair procedures for Fendt 300 Vario COM III series tractors.
Page Count:
Not specified in product info, but assumed to be extensive for a complete workshop manual.
Manual Type:
Workshop Service Repair Manual
Language:
English (assumed, typical for service manuals of this nature)
Powertrain:
Engine (maintenance, troubleshooting, overhaul), Fuel System (injection, pumps, filters), Cooling System, Exhaust System, Transmission (Vario CVT - maintenance, diagnostics, repair), Drivetrain (axles, differentials, PTO).
Hydraulics:
Hydraulic system (pumps, valves, cylinders, hoses), EHR (Electronic Height Regulation), hitch control, auxiliary hydraulic circuits.
Electrical:
Electrical system (wiring diagrams, components, charging system, starter, lighting), control units, sensors, diagnostic connectors.
Chassis And Body:
Braking system (service brakes, parking brake), steering system (hydrostatic power steering), suspension (if applicable to specific models), cab (HVAC, controls, interior trim, doors, glass), chassis components, fenders, drawbar.
Maintenance:
Scheduled maintenance (oil changes, filter replacements, lubrication), pre-operation checks, seasonal maintenance.
Troubleshooting:
Diagnostic procedures for common faults, electrical system diagnostics, hydraulic system diagnostics, engine performance issues.
Repair:
Component removal and installation, major overhauls, adjustments, calibration procedures.
Technical Data:
Torque specifications, clearances, fluid capacities, electrical schematics, diagnostic trouble codes (DTCs).
Depth:
Comprehensive, covering all aspects from routine maintenance to major component overhauls and advanced diagnostics.
Engine Manufacturer:
Deutz or AGCO Power
Engine Model Family:
TCD 2012 / L04 (4-cylinder) or L06 (6-cylinder depending on specific model variant within 309-312 range)
Horsepower Range:
Approximately 90-130 HP (subject to specific model 309, 310, 311, 312 and potential power boost features).
Torque Characteristics:
High torque at low RPM, characteristic of modern diesel engines with common rail injection.
Fuel Injection Type:
Common Rail Direct Injection (CRDI)
Emission Standard:
COM III (Stage III / Tier 3)
Transmission Type:
Fendt Vario (ML 70 / ML 85 / ML 90 series depending on model and power output)
Optional Features:
Different PTO speed configurations, potentially front PTO options.
Cvs Functionality:
Infinitely variable speed control, cruise control functions, TMS (Tractor Management System) integration.
Cab Features:
Climate control (A/C), ergonomic controls, advanced operator interface (e.g., digital display).
Tractor Management System:
TMS for automatic management of engine and transmission for optimal performance and fuel economy.
Diagnostic Ports:
OBD-II or manufacturer-specific diagnostic connectors for engine and transmission control units.
Engine Oil Change:
Typically 500 hours (refer to manual for exact specification based on oil type).
Hydraulic Oil Change:
Typically 1200-2000 hours (refer to manual).
Engine Oil Type:
API CJ-4 or ACEA E7/E9 synthetic or semi-synthetic diesel engine oil, viscosity grade SAE 10W-40 or 15W-40 (check manual for exact spec and API/ACEA ratings).
Hydraulic Transmission Fluid:
AGCO UTTO/THF (Universal Tractor Transmission Oil / Tractor Hydraulic Fluid) or specific Fendt recommended fluid (e.g., Valtra Trans TDL, John Deere Hy-Gard, CASE IH TRACTOR HYDRAULIC FLUID - consult manual for exact spec).
Coolant Type:
Ethylene Glycol based antifreeze/coolant (e.g., G12+ or similar) with appropriate corrosion inhibitors, mixed 50/50 with distilled water.
Common Wear Points:
Hydraulic pump wear, Vario transmission wear components, electronic sensor failures, exhaust gas recirculation (EGR) system issues (if applicable).
Diagnostics Complexity:
Due to the sophisticated electronics and Vario transmission, specialized diagnostic tools and knowledge are often required for complex issues, which this manual aims to provide.
Fendt Vario Introduction:
The Vario transmission revolutionized tractor technology when introduced by Fendt, offering unparalleled efficiency and operator comfort.
Production Period Estimation:
The COM III (Stage III/Tier 3) emission standard was prevalent from roughly 2006 to 2011/2012, so this manual likely covers tractors from that era.
