Tractor Class:
Utility Tractor (Heavy Duty)
Target Application:
Agriculture, heavy-duty farm work, row crops, livestock operations.
Key Competitors:
John Deere 40-series, Massey Ferguson 3000 series, Case IH MX series.
Engine Options:
Known for reliable and powerful diesel engines.
Transmission Options:
Offered with advanced transmission technologies like PowerShift for operator convenience.
Hydraulic Performance:
Robust hydraulic system capable of handling demanding implements.
Operator Comfort:
Designed with operator comfort in mind for long working hours.
Engine:
Disassembly, assembly, diagnosis, repair of major engine components, cooling system, lubrication system, fuel system, starting and charging system.
Transmission:
Service and repair of PowerShift, SynchroShift, and Range Command transmissions; hydraulic pump and control systems; PTO (Power Take-Off) system.
Hydraulics:
Hydraulic pump, control valves, cylinders, accumulators, hydraulic fluid specifications, troubleshooting, and repair of the hydraulic system.
Drivetrain:
Front wheel drive axle, rear axle, differential, final drives, drive shafts, and related components.
Steering:
Power steering system, steering cylinders, steering linkages, and troubleshooting.
Brakes:
Service and repair of wet disc brakes, brake control valve, brake accumulator, and hydraulic brake system.
Electrical System:
Wiring diagrams, lighting system, starting and charging system, instrumentation, diagnostic codes, and troubleshooting of electrical faults.
Operator Controls:
Description and operation of tractor controls, dashboard layout, PTO controls, hydraulic controls, and transmission shifters.
Maintenance:
Lubrication charts, fluid level checks, filter changes, greasing points, belt tensioning, battery maintenance, and daily checks.
Troubleshooting:
Systematic diagnostic procedures, fault code interpretation, common problem diagnosis for engine, hydraulics, transmission, and electrical systems.
Repair:
Step-by-step repair instructions for all major components, including disassembly, inspection, cleaning, part replacement, and reassembly.
Adjustment:
Adjustment procedures for clutch, brakes, PTO engagement, hydraulic flow, and engine timing (where applicable).
Overhaul:
Complete overhaul procedures for engines, transmissions, hydraulic pumps, and steering units.
Torque Specifications:
Precise torque values for all critical fasteners and components.
Clearances:
Specified operating clearances for engine parts, bearings, and hydraulic components.
Diagnostic Charts:
Detailed charts correlating symptoms with potential causes and corrective actions.
Wiring Diagrams:
Comprehensive and legible wiring schematics for all electrical systems.
Special Tools:
Identification and usage of specialized tools required for specific repair procedures.
Format:
PDF (Portable Document Format)
Searchability:
Searchable text enabled for quick information retrieval.
Indexing:
Includes an index for efficient navigation.
Bookmarks:
Provided for easy access to key sections.
Image Resolution:
Improved quality with high-resolution images and diagrams.
Readability:
Optimized for clear readability on screen and for printing.
Binding:
Digital Download (PDF) - No physical binding
Paper Type:
N/A (Digital Format)
Engine Manufacturer:
Ford / New Holland (Likely utilizing a Perkins or Ford-derived engine)
Engine Model Type:
4-Cylinder Turbocharged Diesel
Displacement:
Approx. 3.9 Liters (238 cubic inches) - *Specific displacement may vary by sub-model*
Rated Horsepower:
Approx. 90-100 PTO HP (Power Take-Off Horsepower) - *Varies by specific configuration*
Peak Torque:
Refer to specific engine variant details in the manual for exact figures.
Injection System:
Direct Injection (Likely with Bosch or similar injection pump)
Cooling System:
Liquid-cooled
Transmission Type Standard:
16-Speed SynchroShuttle or 16-Speed SynchroShift (depending on configuration)
Transmission Type Optional:
16x16 Electro-Command (Powershift) or 32-Speed Full Powershift (depending on specific model variant)
Pto Speeds:
Typically 540/1000 PTO RPM, often with ground speed PTO options.
Clutch:
Dual-clutch or single-clutch depending on transmission type.
Hydraulic Pump Flow:
High-capacity hydraulic pump providing flow for implements and hydraulics.
Wheelbase:
Approx. 94-98 inches (2388-2489 mm) - *Varies by 2WD/4WD*
Overall Length:
Approx. 160-170 inches (4064-4318 mm) - *Varies with hitch configuration*
Overall Width:
Approx. 75-85 inches (1905-2159 mm) - *Varies with tire size*
Height To Cab:
Approx. 90-100 inches (2286-2540 mm) - *Varies with cab type and tire size*
Operating Weight:
Approx. 8,000 - 9,500 lbs (3629-4309 kg) - *Varies with configuration and options*
Max Gvw:
Refer to specific model data plate or manual for Gross Vehicle Weight Rating.
Engine Oil Change:
Typically every 250 hours or annually, whichever comes first. Consult manual for exact specification and oil type.
Fuel Filter Change:
Recommended every 500 hours or as needed based on fuel quality. Consult manual.
Hydraulic Oil Change:
Typically every 1000 hours or annually. Filter changes more frequent. Consult manual.
Air Filter Service:
Service or replace based on operating conditions, often indicated by vacuum gauge. Consult manual.
Engine Oil Type:
API CD/CE or ACEA E2 classification, SAE 15W-40 is common. Consult manual for precise grade.
Hydraulic Transmission Fluid:
UTTO (Universal Tractor Transmission Oil) or specific Ford/New Holland fluid. Consult manual for exact specification (e.g., NH 8040).
Coolant Type:
Ethylene glycol-based coolant with appropriate corrosion inhibitors for heavy-duty diesel engines. Consult manual for mixture ratio.
Transmission Wear:
Potential wear in Powershift components or synchronizers with high hours and heavy use. Manual details inspection and repair.
Hydraulic Leaks:
Common issue with O-rings and seals in older hydraulic systems. Manual provides sealing kits and replacement procedures.
Electrical Connectors:
Corrosion or looseness in electrical connectors can cause intermittent faults. Manual includes troubleshooting guides and wiring diagrams.
Engine Overheating:
Can be caused by radiator blockage, faulty thermostat, or water pump issues. Manual covers diagnosis and repair.
Parent Company:
Ford New Holland is a brand with roots in both Ford's tractor division and New Holland's agricultural heritage. Later became part of CNH Industrial.
Series Placement:
The 7840 belongs to the generation of tractors developed by Ford, bridging the gap before full integration into the New Holland brand under Fiat.
Predecessor Models:
Successor to Ford 40-series tractors (e.g., 7740).
Successor Models:
These models were largely replaced by the New Holland Genesis series (e.g., 8000 series) and later TS-A series.
Production Years:
Circa early to mid-1990s (e.g., 1991-1997) - *Exact years may vary by region and specific model updates*
Manufacturing Location:
Primary manufacturing often in Basildon, UK, and Romeo, Michigan, USA.
