🏷️ Basic Information

Make:

David Brown

Model:

1594 Tractor

Product Type:

Service Repair Manual (WSM)

Manual Identifier:

WSM

👋 Introduction

Target Audience:

Tractor owners, mechanics, and DIY enthusiasts

Value Proposition:

Save significant money on repairs and maintenance

Benefit Vs Dealership:

Empowers users to perform their own repairs, reducing reliance on expensive dealership services

Ease Of Use:

Designed for user-friendliness with clear instructions and visuals

Knowledge Enhancement:

Increases user knowledge and understanding of tractor systems

Workshop Utility:

Printable pages for convenient use in the garage or workshop

📋 Manual Details

Overall Coverage:

Comprehensive repair and service information

Routine Maintenance:

Included

Troubleshooting:

Included

Component Repair:

All major repair jobs covered

Estimated Page Count:

Varies by specific manual edition, but expected to be extensive given the depth implied

Type:

Service Manual / Workshop Manual

Language:

English

File Format:

PDF

Delivery Method:

Instant Download

Accessibility Requirements:

Adobe PDF Reader

Compatibility:

All Versions of Windows & Mac

📖 Manual Coverage

Engine:

Complete overhaul, diagnostics, timing, fuel system, lubrication, cooling system

Transmission:

Gearbox repair, clutch, PTO operation and maintenance

Hydraulics:

Hydraulic pump, lift cover, external hydraulics, control systems

Electrical System:

Wiring diagrams, starting system, charging system, lighting, instrumentation

Chassis And Steering:

Front axle, steering system, brakes, wheels and tires

Bodywork:

Sheet metal repair, cab removal and installation (if applicable)

Major Repairs:

Engine rebuilds, transmission overhauls, hydraulic system repairs

Routine Maintenance:

Oil changes, filter replacements, greasing points, fluid level checks

Diagnostics:

Troubleshooting guides for common and uncommon problems

Adjustments:

Valve adjustments, brake adjustments, clutch adjustments

Disassembly And Assembly:

Detailed steps for component removal and reinstallation

Depth:

In-depth, professional quality service and repair

Visual Aids:

Includes pictures and diagrams for clarity

Wiring Information:

Detailed wiring diagrams provided

Step By Step Instructions:

Very easy to follow, step-by-step instructions

📊 Manual Specifications

Print Quality:

Full Printable

Binding:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Manufacturer:

David Brown (likely Perkins-based for this era)

Engine Type:

Diesel

Engine Configuration:

Likely a 4-cylinder or 6-cylinder inline diesel engine

Displacement:

Typical for this model range would be around 3.9L to 4.5L (e.g., 3.9L 4-cylinder or 4.5L 4-cylinder, or potentially a 6-cylinder variant around 6.2L). Exact specification depends on the specific 1594 variant.

Bore X Stroke:

Varies by specific engine variant. For example, a Perkins 4.236 (common in David Brown tractors of this era) has a bore of 3.875 in (98.4 mm) and a stroke of 5.00 in (127 mm).

Horsepower Rating:

Approximately 70-85 PTO HP (subject to specific engine and transmission configuration).

Torque Rating:

Specific torque figures are engine variant dependent, but expected to be in the range of 180-220 lb-ft.

Fuel Type:

Diesel

Injection System:

Likely a direct injection system with a mechanical fuel injection pump (e.g., Simms, CAV, or Bosch).

Fuel Filter Part Number Example:

Various common filters used, e.g., for Perkins engines, often CAV or Fram equivalents.

Engine Oil Type:

API CD or CE rated diesel engine oil, viscosity typically SAE 15W-30 or 20W-50 depending on ambient temperature.

Engine Oil Capacity:

Approximately 7.0 - 9.5 liters (7.4 - 10 US quarts), subject to specific engine block and filter.

Coolant Type:

Ethylene glycol based antifreeze with corrosion inhibitors, mixed 50/50 with distilled water.

🔧 Transmission

Transmission Type:

Manual transmission with multiple gear ratios

Gear Selection:

Likely a 8-speed or 12-speed gearbox (e.g., 8 forward + 4 reverse, or 12 forward + 4 reverse with a creeper gear option).

Clutch Type:

Dual-stage dry plate clutch (one for transmission, one for PTO)

Powershift:

While less common for this exact model designation, some later David Brown tractors offered partial powershift options. The 1594 is typically a manual gearbox tractor.

Pto System:

Independent 540/1000 RPM Power Take-Off (PTO), with a dual-stage clutch engagement.

Transmission Oil Type:

API GL-4 or GL-5 rated tractor hydraulic fluid or SAE 80W/90 gear oil for the gearbox. Tractor hydraulic fluid often serves both transmission and hydraulics. (e.g., John Deere J20C, Ford/New Holland M2C 134).

Transmission Oil Capacity:

Approximately 25-30 liters (26-32 US quarts) for the combined transmission and hydraulic system.

📐 Dimensions

Overall Length:

Approx. 3.7 meters (145 inches)

Overall Width:

Approx. 1.8 meters (71 inches) at rear track

Wheelbase:

Approx. 2.3 meters (90 inches)

Operating Weight:

Approx. 2,600 - 3,000 kg (5,730 - 6,615 lbs), depending on configuration and fitted equipment.

Front Axle Weight:

Approx. 1,000 kg (2,205 lbs)

Rear Axle Weight:

Approx. 1,600 - 2,000 kg (3,527 - 4,410 lbs)

Max Gross Weight:

Subject to manufacturer's specification, likely around 5,000 kg (11,023 lbs).

🛡️ Safety Features

Rollover Protection:

ROPS (Roll-Over Protective Structure) may be an optional or standard fitment depending on the market and production year. The manual would detail installation and maintenance of this.

Braking System:

Hydraulically operated internal expanding shoe brakes on rear wheels. Power-assisted brakes may be available.

Parking Brake:

Independent mechanical parking brake system.

Seatbelts:

If fitted with a cab or ROPS, seatbelts are typically present.

💡 Technology Features

Infotainment System:

N/A (Farm tractor technology of this era did not include modern infotainment systems).

Driver Assistance Features:

N/A (Basic mechanical controls).

Connectivity Options:

N/A

🔧 Maintenance

Engine Oil Change:

Typically every 250 hours or annually, whichever comes first.

Air Filter Check:

Check at 50-100 hour intervals, clean or replace as needed.

Fuel Filter Replacement:

Replace every 250-500 hours or annually.

Hydraulic Oil Change:

Typically every 500-1000 hours or every two years.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid (for hydraulic brake actuation).

Grease Type:

Lithium complex grease (NLGI Grade 2) for lubrication points.

Common Wear Points:

Hydraulic pump wear, PTO clutch wear, common seal leaks (e.g., rear main seal, transmission seals), front axle kingpins and bushings.

Electrical Issues:

Corrosion on electrical connectors, alternator/starter motor issues, wiring harness degradation over time.

Engine Related:

Overheating due to radiator blockage or worn water pump, injector pump issues, blow-by from worn piston rings/liners.

📚 Vehicle History

Manufacturer Origin:

David Brown Tractors was a British agricultural machinery manufacturer.

Brand Acquisition:

David Brown was acquired by Tenneco (manufacturer of Case and later Case IH) in 1970.

Series Context:

The 1594 is part of the '94 Series' of tractors, which succeeded the earlier 70 and 90 series. This series represented a significant update in styling and technology.

Production Period:

The 94 Series, including the 1594, was produced from the early 1980s through the mid-1980s.

Manufacturing Location:

Typically manufactured in the UK at the David Brown factory in Meltham, West Yorkshire.

🏆 Awards & Recognition

Industry Awards:

While specific awards for the 1594 model are not widely documented, David Brown tractors were generally well-regarded in their time for their robustness and reliability in agricultural applications.