🏷️ Basic Information

Make:

Case David Brown

Model:

1594 Tractor

Product Type:

Tractor

Application Sector:

Agriculture

Model Code:

1594

👋 Introduction

Vehicle Market Segment:

Utility Tractor, Agricultural Machinery

Intended Use:

General farming, fieldwork, towing, loader work, land management

Key Competitors Era:

John Deere (e.g., 4040 series), Massey Ferguson (e.g., 3000 series), Ford (e.g., 40 series), International Harvester (e.g., 86 series)

Unique Selling Points:

Robust construction, powerful engine for its class, often good value for money, reliable drivetrain, advanced (for its time) hydraulic and transmission options

Manual Value Proposition:

Authentic factory documentation ensures accuracy, comprehensive coverage reduces reliance on guesswork, parts manual is crucial for sourcing correct replacement parts, essential for maintaining and repairing the tractor for optimal performance and longevity.

Manual Authenticity:

Stated as 'Real Factory Manuals', differentiating from aftermarket alternatives. This implies direct official documentation for accuracy and completeness.

📋 Manual Details

Primary Coverage:

Factory Service, Shop Repair, Illustrated Parts

Secondary Coverage:

Maintenance, Troubleshooting, Diagnostics, Reassembly

Service Manual Approx Pages:

Estimated 500-700 pages (typical for this era's comprehensive manuals)

Shop Manual Approx Pages:

Estimated 400-600 pages (overlaps with service, often focuses on detailed procedures)

Parts Manual Approx Pages:

Estimated 300-500 pages (includes diagrams and part numbers)

Service Manual Type:

Factory Service Manual (FSM)

Shop Manual Type:

Factory Shop Manual (FSM)

Parts Manual Type:

Factory Illustrated Parts Manual (IPM)

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Engine Systems:

Cooling system, lubrication system, fuel system (injection and delivery), intake and exhaust systems, starting system, electrical system (ignition, charging, battery), engine repair and overhaul, piston and connecting rod assembly, crankshaft and camshaft, cylinder head and valve train, engine specifications, troubleshooting

Transmission Systems:

Gearbox (e.g., 8-speed constant mesh, 16-speed with power shift), hydraulic power shuttle (if applicable), differential lock, final drives, PTO (Power Take-Off) engagement and gears, clutch system, transmission fluid specifications, rebuild procedures, troubleshooting

Hydraulic Systems:

Hydraulic pump, control valves, lift-o-matic (if equipped), external hydraulic couplers, hydraulic fluid specifications, cylinder repair, troubleshooting, system capacity

Electrical Systems:

Wiring diagrams, battery, starter, alternator, lighting systems, instrumentation, fuses, relays, solenoids, troubleshooting electrical faults, component testing

Braking Systems:

Brake assembly (wet disc brakes likely), brake pedal linkage, master cylinder, brake fluid specifications, bleeding procedures, brake component repair and replacement

Steering Systems:

Power steering system (likely hydrostatic), steering column, steering linkages, hydraulic steering unit, steering fluid specifications, troubleshooting

Chassis And Body:

Front axle, rear axle, hitch system (3-point linkage), drawbar, fenders, operator station (seat, controls), instrument panel, body panel removal and installation, frame specifications

Power Take Off Pto:

PTO engagement mechanisms, PTO shaft, PTO clutch, speeds (e.g., 540/1000 RPM), maintenance and repair

Maintenance Procedures:

Oil changes (engine, transmission, hydraulic), filter replacements (oil, fuel, hydraulic, air), lubrication points, greasing intervals, coolant checks and replacement, battery maintenance, tire pressure checks, visual inspections

Repair Procedures:

Engine rebuild, transmission overhaul, hydraulic system repair, brake system overhaul, steering system repair, axle rebuilding, electrical component replacement, PTO component repair

Troubleshooting Procedures:

Diagnostic flowcharts for common issues, symptom-based troubleshooting guides, component testing procedures, fault code identification (if applicable)

Diagnostic Procedures:

Engine performance testing, hydraulic pressure testing, electrical system testing, component inspection protocols

Assembly Disassembly:

Step-by-step instructions for dismantling and reassembling major components and systems with torque specifications and alignment instructions

Depth Of Coverage:

Comprehensive (covers routine maintenance to full engine and transmission overhauls)

Diagnostic Capability:

Advanced (includes diagnostic charts, component testing, and troubleshooting trees)

Part Identification:

Detailed illustrated parts catalog with part numbers, diagrams, and component breakdowns

📊 Manual Specifications

File Format:

PDF

Searchable Text:

Likely (depends on original scan quality, but factory PDFs are usually OCR'd)

Print Quality:

High resolution (suitable for printing specific sections or entire manuals)

Binding Type:

N/A (Digital Download PDF)

Paper Type:

N/A (Digital Download PDF)

⚙️ Engine Specifications

Engine Make:

David Brown

Engine Model:

AD4.248 (likely, a common Perkins derivative used by David Brown)

Engine Type:

4-cylinder, naturally aspirated, direct-injection diesel

Displacement:

4.236 Liters (258 cubic inches)

Gross Horsepower Rating:

Approximately 80-90 HP (Engine Gross)

Net Horsepower Rating:

Approximately 70-80 HP (Engine Net, PTO or Drawbar may be lower)

Peak Torque:

Approximately 180-200 lb-ft (estimated, specific to configuration)

Fuel Type:

Diesel

Injection System:

Bosch (or similar, typically inline injection pump)

Oil Capacity:

Approx. 9-10 liters (with filter) - refer to manual for exact spec

Coolant Capacity:

Approx. 15-18 liters - refer to manual for exact spec

🔧 Transmission

Transmission Type Standard:

8-speed synchromesh gearbox with optional 16-speed Power-Shift (Synchro-Shuttle)

Transmission Type Optional:

16-speed with High-Low gear splitting (often referred to as Semi-Powershift or Hi-Lo)

Clutch Type:

Dual-stage dry clutch (for PTO and transmission engagement)

Pto Speeds:

Standard 540 RPM, optional 1000 RPM (refer to manual for exact configuration)

Transmission Hydraulic Fluid Type:

API GL-4 or GL-5 (SAE 80W-90 or 85W-140 typically for gearbox, tractor hydraulic fluid for shared systems) - refer to manual for precise OEM recommendation

📐 Dimensions

Overall Length:

Approx. 3.7 - 4.0 meters (without front weights or implements)

Overall Width:

Approx. 1.8 - 2.2 meters (adjustable rear track)

Wheelbase:

Approx. 2.3 meters

Operating Weight:

Approx. 3,500 - 4,000 kg (unballasted)

Max Gross Weight:

Variable, typically around 6,000 kg or more with ballast

🛡️ Safety Features

Rollover Protection Structure Rops:

ROPS likely fitted as standard or optional depending on region and production date. Manual will detail its installation and maintenance.

Parking Brake:

Independent parking brake mechanism.

Differential Lock:

Foot or hand-operated differential lock for improved traction.

Seat Belt:

Seat belt provided if fitted with a certified ROPS or safety frame.

💡 Technology Features

Infotainment Features:

Basic instrumentation (tachometer, engine temp, oil pressure, fuel gauge), no modern infotainment systems (radio, GPS etc.)

Driver Assistance Features:

No electronic driver assistance systems. Relies on mechanical controls and operator skill.

Connectivity Features:

None.

🔧 Maintenance

Engine Oil Change Interval:

Typically every 250-500 operating hours or annually. Refer to manual for exact recommendation and oil type.

Fuel Filter Replacement Interval:

Every 500 operating hours or as needed if experiencing fuel issues.

Air Filter Maintenance:

Check daily/weekly, clean or replace as needed based on operating conditions. Dry element, typically requires replacement, or cleaning for pre-cleaner bowls.

Engine Oil Specification:

API CD/CE or SF/SG rated diesel engine oil, SAE 15W-40 recommended for most operating temperatures. Refer to manual for specific viscosity and API service rating.

Hydraulic Transmission Fluid:

Universal Tractor Transmission Oil (UTTO) or specific tractor hydraulic fluid meeting manufacturer's specifications. Refer to manual for exact part number or specification (e.g., ISO VG 46 or 32 for hydraulics, SAE 80W-90 for gearbox).

Coolant Specification:

Ethylene glycol based antifreeze, typically a 50/50 mix with distilled water. Specific additive packages may be required depending on engine type and operating conditions. Refer to manual for details.

Common Wear Items:

Clutch wear, PTO spline wear, hydraulic pump volume loss, front axle kingpin wear, minor oil leaks from seals and gaskets, potential for diesel injector pump issues if not maintained.

Electrical Reliability:

Older wiring harnesses can degrade; inspect for chafing or corrosion. Faulty relays or solenoids can cause starting or charging issues.

Transmission Smoothness:

Synchromesh wear can lead to difficult shifting. Powershift transmissions require careful maintenance to prevent premature failure.

📚 Vehicle History

David Brown History:

David Brown Tractors was a British agricultural machinery manufacturer, known for robust and reliable tractors, eventually becoming part of Tenneco (Case IH).

1594 Evolution Context:

The 1594 was part of the 'new generation' of Case-David Brown tractors, representing a significant update in power and features over earlier models, often succeeding or complementing models like the 995/1210 series.

Production Period:

Mid to late 1970s and early 1980s (typically 1978-1984, exact dates vary).

Manufacturing Location:

Meltham, Yorkshire, United Kingdom (primary)

🏆 Awards & Recognition

Industry Awards:

Not applicable for specific tractor models in this era, but David Brown brand was recognized for solid engineering and reliability within the agricultural sector.

Agricultural Performance Ratings:

Reputation for good drawbar pull and hydraulic lift capacity relative to its contemporaries. Manual provides the specifications to verify these capabilities.

Safety Certifications:

Dependent on specific fitment of ROPS; manual will detail safety procedures related to its operation.