2000–2006 Fendt Farmer 409, 410, 411, 412 Tractor Workshop Manual (P/N X 990.005.049.010)

The January 2006 edition of Fendt's Farmer 400 workshop manual, publication X 990.005.049.010 en, covers the 2000–2006 Farmer 409, 410, 411, and 412 tractors through assembly-specific repair, diagnostic, and calibration worksheets.

• Engine repair: Cylinder-head gasket replacement, valve-clearance adjustment, plug-in injection pump replacement, injector service, and fuel-system and lubrication tests.

• Vario drivetrain: Transmission removal and installation, differential setup, live PTO repairs, front PTO service, and front-wheel-drive clutch replacement.

• Brakes and compressed air: Rear wheel brake and cylinder repairs, brake and clutch bleeding, and single-line and dual-line trailer brake tests.

• Hydraulics and steering: Load-sensing system troubleshooting, auxiliary pump testing, front-axle suspension checks, and electrohydraulic rear power lift diagnosis.

• Calibration procedures: Transmission ratio, turboclutch operation, clutch pedal, range control, accelerator, suspension, and front and rear PTO engagement settings.

• Electrical and cab systems: Fault-code tables, wiring diagrams, connector assignments, CAN bus checks, and air-conditioning electrical tests.

Written for trained tractor technicians, the manual assumes normal workshop equipment and identifies special tools where they are used and in a separate tool section.

Build Changes and Engine Repair

The build history distinguishes COM I and COM II versions of the DEUTZ BF 4 M 2013 engine. It also identifies ZF APL-2000 F3/F4 and DANA 730-110 front axles and Bosch EPC-C/EPC-OBE rear lift controls.

COM II changeover begins at 409/21/3098, 410/21/3567, 411/21/3492, and 412/21/1867.

Engine worksheets explain cylinder-head gasket selection from piston projection and the compensating-washer calculation used when fitting a new injection pump. The pump procedure identifies special tools, including control-rod pull-down device X899.980.230. Cooling-system data and an engine lubrication circuit supplement the repair sections.

Transmission and PTO Service

The transmission chapter covers the Vario unit, live PTO speed preselection, front PTO clutch, and driveline clutch assemblies. Differential work includes pinion positioning and bearing adjustment; the pinion shaft and ring gear are identified as a matched pair that must be replaced together if either is damaged.

Pressure-test sheets distinguish measurement conditions and production versions. The manual also separates routine oil changes from pressure filling an emptied high-pressure circuit, where dry running can damage the variable-displacement pump and motor.

Hydraulics, Brakes, and Air Conditioning

Hydraulic diagnosis separates the LS supply, auxiliary steering pump, and rear EPC circuit, using measuring-point diagrams and test-record sheets. Front suspension material explains leveling and accumulator functions. Front-loader information includes 3/63 and 3S/63 specifications and hydraulic troubleshooting references.

The brake and clutch sections specify Pentosin CHF 11S and describe their bleeding procedures. Compressed-air material includes compressor installation and pressure-regulator adjustment; air-conditioning sections explain the refrigerant circuit, temperature control, and electrical checks.

Suspension accumulators can remain pressurized with the engine stopped. Follow the manual's pressure-relief and support precautions before hydraulic work.

Electronic Diagnostics and Calibration

A008 terminal diagnostics cover the original controls and Variotronic 2.0. Separate wiring sets for the earlier tractors, the ../4001 change, and EPC-OBE electronics help match connector assignments to the tractor before electrical testing.

Calibration worksheets include transmission ratio characteristics, code 4007, and turboclutch operation, code 4009. K-bus and G-bus descriptions accompany component-specific sensor and ECU tests.

Electrical examples include Transmission Control—Sheet 26 and Electrohydraulic Lifting Gear Control—Sheet 22. Other references include the Transmission Hydraulics schematic, EHR 23-LS sectional view and circuit diagram, Power and Steering Hydraulics diagrams, and engine cross-section.

Cooling, Hydraulic Pressure, and Wheel Torque Examples

These are a few examples of the cooling, hydraulic, and fastener data included in the manual. The COM I engine tables specify thermostat opening at 87 ± 2 °C.

The Farmer 400 hydraulic reference lists a maximum working pressure of 200 bar, alongside separate standby and pump-monitoring specifications.

Wheel-fastener entries specify 275 Nm for front wheel nuts and 450 Nm for rear wheel nuts. The tractor tables also list DIN 13 torque values for the main housing connections.

Searchable PDF and Diagram Detail

Text search and drawing detail: The PDF has searchable text and embedded bookmarks organized by assembly and procedure. Small wiring labels require zooming; hydraulic schematics use fine, light linework. The workshop text is English, with some German labels retained in diagrams.

Supplied as one printable, 1,262-page PDF, including the cover and integrated service information. The total already includes 28 pages of service bulletins and associated charts; these are part of the workshop manual.