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

Ford tractor service documentation covering 5640-8340 models with detailed transmission and hydraulic system specifications. Complete overhaul and repair procedures for constant mesh, synchro-shift, and dual power transmissions.

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Document Details

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Document Number / Seller:
25350 / Sharon Thomas
File Size:
73.10 MB
File Type:
PDF
Language:
English
Printable:
Yes
Estimated Download Time:
1.5 Minutes
Delivery Format:
Digital (PDF) - Instant Access
Category:
Tractor
Brand:
Ford
Reviewed and Approved:
Mar 20, 2025
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Models Covered & Key Technical Specifications

Ford 5640, 6640, 7740, 7840, 8240 & 8340 — 1990s Original Technical Dossier | Tractor Service Suite.

  • Authorized Travel Rate: Engine displacement ranges from 4390 cc (268 cu. in.) to 7480 cc (456 cu. in.) is calibrated to represent the cylinder volume Mapping.
  • Published Footprint Data: Compression ratio of 17.5:1 governs the combustion pressure specifications Configuration.
  • Reference Scan Resolution: Valve clearance is specified as 0.36-0.46 mm inlet and 0.43-0.53 mm exhaust when measured cold Benchmarks.
  • Fundamental Liquid Volume: Fuel tank capacity provides 94.6–113 L (25–29.8 U.S. gal.) depending on model selection Range.
  • Specific Power Rating: Engine rated power is rated at 49–83.5 kW (66–112 hp) at PTO across the model lineup Sequences.
  • Core Velocity Specs: Compression pressure minimum reaches 23,995–29,995 kPa (3480–4350 psi) for engine operation Baseline.

Professional Workshop Service Manual & Technical Specifications

Applied Training Electrical Manual: Tractor Official Ford 5640, 6640, 7740, 7840, 8240 & 8340 Service Manual - Comprehensive Maintenance & Repair Procedures Hydraulic-Guide

Model-Portfolio: Ford 5640, 6640, 7740, 7840, 8240, 8340 // Calibration-Scope: Two-wheel drive, four-wheel drive / Diesel engine systems Logic // Model-Portfolio: Complete service documentation for agricultural tractor maintenance.

Integrated-Framework Baseline Logic
Engine Systems Four-cylinder and six-cylinder diesel Cylinder head, timing gears, fuel injection pump procedures documented
Transmission Options 8x2, 12x12, 16x16 configurations Synchro-shift and powershift assembly specifications provided
Hydraulic Components Steering, lift, and auxiliary systems Pump overhaul, valve calibration, and pressure testing data included
Front Axle Systems Two-wheel and four-wheel drive Differential, planetary gear, and transfer gearbox documentation
Electrical Systems Alternator, starter, instrumentation Wiring diagrams and electronic control system procedures included

Systematizing the service groups into engine assemblies, transmission systems, hydraulic mechanisms, and front-wheel drive configurations, this comprehensive resource consolidates maintenance procedures for the Ford tractor lineup. The documentation presents engine components including cylinder head, rocker arms, timing gears, crankshaft assemblies, and diesel fuel injection systems. Transmission information encompasses constant mesh configurations, synchro-shift units, and powershift assemblies with dual power options. Hydraulic system coverage includes closed center load sensing pumps, open center units, steering systems, and lift control mechanisms.

Systematic Methodology

Testing requirements are specified for cooling system components, including radiator pressure cap settings and thermostat operation ranges. Clearance measurements are addressed for bearing assemblies, clutch components, and gear train elements throughout the transmission and axle systems. The manual documents torque specifications for the cylinder head, connecting rods, and crankshaft components to ensure proper bolt stretch prevention.

Precise Parameters

Special procedures are addressed for front-wheel drive assemblies, including planetary gear sets, differential configurations, and transfer gearbox maintenance. Verification procedures are included for hydraulic pressure relief valves, electrical system charging output, and transmission synchronizer ring wear limits. The document presents detailed specifications for piston-to-cylinder clearances, bearing journal diameters, and seal installation dimensions across engine and drivetrain systems.

Comprehensive Framework

Repair information is provided for clutch assemblies, including mechanical and hydraulic actuation linkage, release bearing components, and pressure plate inspection. The manual covers electrical troubleshooting for alternator output, starting motor function, instrumentation systems, and electronic control circuits used on transmission and draft control units. Wiring diagrams illustrate harness routing, connector locations, and diagnostic circuit identification for engine management, transmission electronics, and instrument cluster functions.

Systematic Methodology

The documentation includes removal and reinstallation procedures for major assemblies including engine, transmission, axles, and front support structures. Disassembly and reassembly sequences are provided for gearbox components, synchronizer mechanisms, planetary gear sets, and hydraulic valve assemblies with reference to bearing cup and cone specifications. Service intervals specify filter replacement at 300-hour intervals and transmission fluid changes at 1200-hour intervals or annually.

Strategic Benchmarks

Troubleshooting sections address diesel fuel system operation, including fuel filter bleeding, injection pump timing, and injector testing protocols. Electronic system diagnostics are documented for dual power transmission control, including clutch calibration procedures, error code interpretation, and solenoid valve testing methods. The manual provides reference data for hydraulic pressure thresholds, electrical system voltage specifications, and operational RPM settings across all model configurations.

Model-Portfolio: Complete factory documentation covering hydraulic systems, electrical wiring, transmission controls, and engine management across six tractor models.

FAQ

Confirm the **recommended** diagnostic procedures for fuel system troubleshooting. keyboard_arrow_down

23,995-24,753 kPa (3480-3590 psi) is the correct injector opening pressure for 5640, 6640, and 7740 models. When fuel will not reach the injection pump, first check that the supply valve is open, inspect fuel filters for clogging, bleed the fuel filters, and examine lines and connectors for damage. If fuel reaches the nozzles but the engine won't start, verify cranking speed is adequate, check throttle control rod adjustment, confirm pump timing, inspect for faulty nozzles, and test engine compression.

What tools are **calibrated** to verify fluid capacity requirements? keyboard_arrow_down

62 liters (65.5 U.S. quarts) is required for transmissions with 540 rpm pto or 66 liters (69.7 U.S. quarts) for 540/1000 rpm pto models. Transmission oil level must be checked with hitch lift cylinders fully extended and maintained between ADD and FULL marks on the dipstick. Ford M2C134-D lubricant is the recommended specification for maintaining proper transmission and hydraulic system operation.

Identify the **applicable** component specifications found in technical documentation. keyboard_arrow_down

217 N·m (160 ft.-lbs.) torque is required for cylinder head bolts on four-cylinder engines, with a three-step tightening procedure: first to 156 N·m (115 ft.-lbs.), second to 190 N·m (140 ft.-lbs.), and final to 217 N·m (160 ft.-lbs.). These specifications ensure proper gasket sealing and structural integrity when cold, with measurements detailed in pages 85-100 of the service manual covering complete maintenance procedures.

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Reviews (5)

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Rated 5 out of 5 stars
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This manual covers everything you need to know about servicing my tractor. The wiring diagrams are particularly useful. Fast response from customer support too!
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I found the service procedures very clear and easy to follow. The troubleshooting sections helped me solve issues quickly. Excellent support when I had questions!
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This manual is a lifesaver for anyone with these Ford models. The detailed diagrams and procedures make every repair much easier. Highly recommend!
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The information provided is thorough and well-organized. I had no issues with the download process; it was quick and straightforward. Very satisfied!