Ford 5640 / 6640 / 7740 / 7840 / 8240 / 8340 Tractor Service Manual

Ford 5640–8340 Tractor Service Documentation

• Covers 1990s Ford 5640, 6640, 7740, 7840, 8240, and 8340 agricultural tractors including both 2WD and 4WD drive-line configurations
• Third-party publication: Visible-Results/manuals247.com shop manual
• Contains 160+ diagrams, exploded-view schematics for engine/transmission, and comprehensive torque-specification tables
• Delivered as a direct download the moment payment clears
• Full-text search finds any part number in seconds
• This 1990s Ford shop manual is the primary reference for servicing the 5640–8340 tractor series, documenting engine-to-transmission split procedures and hydraulic troubleshooting

Contents Overview

This Ford 5640–8340 service publication outlines procedures for maintenance and heavy mechanical repair across the tractor series. The manual details engine component overhaul, including cylinder head service, timing gear configurations, and crankshaft inspection. Additional sections define procedures for the cooling system, fuel supply systems, and hydrostatic steering diagnostics. Transmission content segments the documentation by gearbox type, covering constant mesh, power-shift, and synchro-shift systems, along with the dual-power planetary gear sets. Detailed wiring diagrams and diagnostic information for the digital instrument clusters are also documented to assist in electrical system verification.

Specification Highlights

Engine component specifications are presented in standardized tables for quick reference. Main bearing journal diameters are listed with corresponding blue/red color coding. Connecting rod bolt torque is specified at 149 Nm (110 ft.-lbs.) for all models. The cooling system capacities are documented at 16 L for the 5640–7740 range and 21.5 L for the 8240–8340 models. Valve clearance for the intake is listed at 0.36–0.46 mm in the cylinder head specification table. Cylinder head bolt torque values are documented in a multi-stage sequence, with final-stage torque specified at 217 Nm (160 ft.-lbs.) in the engine assembly data. The hydrostatic steering relief pressure is set at 15,300–16,300 kPa for 2WD tractors and 18,000–19,100 kPa for 4WD units.

Reference only — always consult a certified technician before performing service on this equipment. An official-style 279-page Ford tractor workshop manual covering the 5640–8340 series, documenting engine, drivetrain, chassis, and electronic diagnostic specifications for the 1990s model build.