Positioning:
Essential technical documentation for owners and technicians of IH Case David Brown 1594 and 1690 tractors, enabling self-sufficiency in maintenance and repairs.
Target Audience:
Farm owners, independent mechanics, tractor restoration enthusiasts, and agricultural workshops.
Comparison:
This manual provides a more in-depth and authoritative resource compared to generic repair guides, offering specific factory-level data for these particular tractor models.
Features:
Comprehensive coverage, step-by-step instructions, illustrative diagrams, troubleshooting guides, and digital accessibility for easy printing and device compatibility.
Coverage:
Complete service and repair procedures for IH Case David Brown 1594 and 1690 Tractors. Covers all models, engines, trim, and transmission types.
Estimated Pages:
Likely over 1000 pages (typical for complete workshop manuals of this era and complexity)
Type:
Complete Workshop Service Repair Manual
Systems:
Engine (diesel), Fuel System, Cooling System, Lubrication System, Electrical System (including starting, charging, lighting), Power Train (clutch, transmission, differential, final drives), Hydraulics (PTO, hydraulic lift, auxiliary hydraulics), Steering System, Braking System, Chassis, Cab (HVAC if applicable), and operator controls.
Electrical System Detail:
Detailed wiring diagrams, component testing, troubleshooting for lighting, starting, charging, and instrumentation.
Hydraulics Detail:
Operation and repair of the 3-point hitch system, auxiliary hydraulic valves, PTO hydraulic system, and general hydraulic pump and valve body repairs.
Steering System Detail:
Servicing and repair of the power steering system, including pump, steering cylinder, and control valve.
Chassis Detail:
Front axle, rear axle, drawbar, and any chassis-related components.
Procedures:
General maintenance, scheduled servicing, troubleshooting, diagnostics, component removal and installation, repair procedures, overhaul instructions, torque specifications, clearances, and wiring diagrams.
Troubleshooting Guides:
Systematic troubleshooting steps and diagnostic flowcharts for common issues across all major tractor systems.
Torque Values:
Specific torque values for critical fasteners throughout the tractor for proper assembly and safety.
Adjustments:
Detailed procedures for adjusting clutch pedal free play, brake adjustments, PTO engagement, and hydraulic system settings.
Depth:
Comprehensive, covering everything from basic adjustments and fluid changes to complete engine and transmission rebuilds. Includes diagnostic flowcharts and detailed repair steps with illustrations.
Rebuild Procedures:
Complete step-by-step instructions for the overhaul and rebuilding of major components such as the engine, transmission, hydraulic pump, and final drives.
Searchability:
Likely text-searchable PDF, allowing users to quickly find specific topics or keywords.
Quality:
High quality, designed for clear printing of text and images. Assumed to be scanned from original factory manuals.
Illustrations Quality:
Diagrams and illustrations are expected to be clear and detailed, crucial for guiding repair procedures.
Binding:
N/A (Digital download, printable)
Paper:
N/A (Digital download, printable on any paper type)
Engine Type:
Direct Injection Diesel Engine (likely Perkins or IH-designed variants common in this era)
Horsepower 1594:
Approximately 90-100 PTO horsepower (specific rating may vary by sub-model and engine option)
Horsepower 1690:
Approximately 100-110 PTO horsepower (specific rating may vary by sub-model and engine option)
Engine Torque:
Estimated 250-300 lb-ft (339-407 Nm) at operating RPM.
Injection System:
Direct Injection (likely CAV or Simms rotary injection pump)
Engine Displacement:
Likely in the range of 5.5 to 6.5 liters, depending on the specific engine model.
Transmission Type:
Manual Synchromesh Transmission (likely with multiple speed ranges and possibly a Power Shift or Hi-Lo option)
Optional Transmission:
Possible Hi-Lo range splitter or Powershift options depending on specific configurations.
Gear Speeds:
Typically 12 forward and 4 reverse speeds, or similar configurations.
Clutch Type:
Dual-stage or single-stage dry clutch for PTO engagement and main drive.
Wheelbase:
Variable, typically around 90-96 inches (2286-2438 mm)
Operating Weight:
Around 8,000 - 10,000 lbs (3629 - 4536 kg) without ballast.
Overall Length:
Approximately 150-160 inches (3810-4064 mm) without implements.
Overall Width:
Typically around 75-85 inches (1905-2159 mm) at the rear wheels, depending on tire size.
Overall Height:
Around 90-100 inches (2286-2540 mm) to the top of the cab or exhaust stack.
Rollover Protection:
ROPS (Roll-Over Protective Structure) would have been optional or standard depending on regional regulations and model year. Manual covers its inspection and maintenance.
Brakes:
Hydraulic disc brakes (wet or dry), typically inboard.
Seat Belt:
Seat belt availability and maintenance would be covered if equipped with a ROPS.
Infotainment System:
N/A (Tractors of this era did not feature modern infotainment systems. Focus is on functional controls and gauges.)
Driver Assistance Features:
N/A (No electronic driver assistance features present. Focus on mechanical and hydraulic control systems.)
Connectivity Features:
N/A (No digital connectivity features.)
Engine Oil Change:
Typically every 250 hours or annually. Manual will specify exact interval and oil type.
Engine Oil Type:
API CD or CE rated Diesel Engine Oil, SAE 15W-40 or 10W-30 depending on climate. Manual will provide exact specifications.
Transmission Hydraulic Fluid:
Universal Tractor Transmission Oil (UTTO) or equivalent hydraulic fluid meeting IH specification (e.g., Hy-Tran). Manual will detail specific fluid and capacity.
Coolant Type:
Ethylene glycol-based antifreeze mixture (50/50 with distilled water). Manual will specify capacity and type.
Hydraulic Fluid Spec:
Specific IH or OEM approved UTTO, or ISO VG 46 Hydraulic Oil. Manual will detail precise specifications and capacity.
Common Problems:
Potential issues may include wear in the transmission synchros, hydraulic pump wear, starter or alternator problems, and typical diesel engine component wear ( injectors, glow plugs).
Electrical Issues:
Wiring harness degradation, starter solenoid failure, and alternator issues are common for vehicles of this age.
Hydraulic Issues:
Slow hydraulic response, leaks at cylinder seals or hoses, and erratic PTO engagement can occur due to wear or low fluid.
Schedule Details:
The manual will contain a detailed preventive maintenance schedule covering daily, weekly, monthly, and annual checks and servicing for all major systems.
Filter Replacement Intervals:
Engine oil filter, fuel filter, and hydraulic filter replacement intervals will be clearly defined, typically coinciding with oil changes.
Heritage:
IH Case David Brown represents the merger of International Harvester's agricultural division and David Brown Tractors, combining robust engineering and established legacies.
Evolution:
The 1594 and 1690 were part of a line of tractors developed post-merger, focusing on power, reliability, and utility for agricultural applications. They represent a significant evolution in IH's tractor offerings.
Production Years:
Likely produced in the late 1970s and early 1980s.
