Target Audience:
Tractor owners, farmers, mechanics, and agricultural maintenance professionals seeking to perform their own repairs.
Value Proposition:
Provides significant cost savings by enabling DIY repairs, empowering users with knowledge and reducing reliance on expensive professional services.
Ease Of Use:
Features 'very easy to follow step-by-step instructions' designed to make repairs accessible.
Information Access:
Instant download and printable pages for convenient use in a garage or workshop environment.
Knowledge Enhancement:
Aims to keep users 'up-to-date and more knowledge' about their tractor's workings.
General Coverage:
Comprehensive service, repair, and maintenance for the International Harvester 444 Tractor.
Estimated Page Count:
Detailed page count not specified, but described as 'in depth' and 'full'.
Manual Format Type:
Service Repair Manual / Workshop Manual
Digital Format:
PDF Download
Engine System:
Engine overhaul, fuel system, cooling system, lubrication system, ignition (if applicable to diesel), starting and charging.
Transmission System:
Clutch, gearbox, differential, final drives, power take-off (PTO).
Hydraulic System:
Hydraulic pump, control valves, lift arms, remote hydraulics (if equipped).
Electrical System:
Wiring diagrams, lighting, starting and charging circuits, instrument panel.
Steering System:
Steering mechanism, linkage, power steering components (if equipped).
Braking System:
Brake pedal, brake linkages, band brakes or disc brakes (depending on configuration).
Chassis And Frame:
Frame inspection and repair, axle assemblies.
Operator Station:
Seat, controls, dashboard layout, safety features.
Maintenance Procedures:
Routine checks, lubrication schedules, filter replacements, fluid changes.
Troubleshooting Procedures:
Diagnostic guides for common problems and their solutions.
Repair Procedures:
Step-by-step instructions for component disassembly, repair, and reassembly.
Engine Repair:
Piston, ring, valve, and cylinder head service; crankshaft and bearing inspection.
Transmission Repair:
Gearbox disassembly, synchronizer service, PTO engagement repair.
Hydraulic Repair:
Pump seal replacement, valve spool service, cylinder resealing.
Electrical Repair:
Wiring harness repair, starter motor and alternator testing, switch replacement.
Diagnostic Capability:
Covers basic to advanced diagnostics with clear step-by-step instructions.
Rebuild Procedures:
Detailed instructions for complete engine, transmission, and hydraulic system rebuilds.
Illustrations:
Includes pictures and wiring diagrams for all areas of repair.
Engine Type:
Diesel (typical for this era and model series)
Engine Family:
International Harvester BD Series or similar (e.g., BD-154, BD-206, BD-236, BD-264 - specific engine depends on exact build).
Engine Configuration:
Likely inline 3-cylinder or 4-cylinder diesel.
Estimated Horsepower:
Varies by specific engine variant, typically in the 40-60 HP range.
Estimated Torque:
Specific figures not provided, but engineered for robust pulling power.
Fuel Delivery:
Direct injection, typically with a Roosa-Master or Simms inline injection pump.
Cooling Method:
Water-cooled
Oil Type Recommendation:
Refer to manual for specific IH viscosity grades, likely an API CD or similar diesel engine oil.
Gearbox Type:
Constant mesh, sliding gear transmission.
Number Of Speeds:
Typically 8 forward speeds and 2 reverse speeds (e.g., 4 forward gears with a Hi/Lo range selector).
Clutch Type:
Single dry plate, heavy-duty clutch.
Power Take Off Pto:
Standard 540 RPM PTO, potentially a 2-speed option.
Differential Lock:
Differential lock (positive traction) is common on this model for improved traction.
Instrumentation:
Basic analog gauges for oil pressure, coolant temperature, fuel level, and ammeter/voltmeter. Tachometer likely present.
Traction Control:
Mechanical differential lock provides manual traction assistance.
Attachment Interfaces:
Standard three-point hitch (Category I), PTO shaft, hydraulic couplers for external implements.
Engine Oil Change:
Typically every 100-200 operating hours, depending on operating conditions. Consult manual for exact interval.
Fuel Filter Replacement:
Regular replacement recommended, especially when changing fuel or experiencing performance issues. Consult manual.
Hydraulic Fluid Change:
Recommended annually or every 500 hours, whichever comes first. Consult manual for specific fluid type and capacity.
Engine Oil Spec:
Consult manual for specific IH oil grades (e.g., IH C-4 for some transmissions/hydraulics, and diesel engine oils like 15W-40 or 10W-30 for engine).
Hydraulic Fluid Spec:
Typically an IH Hy-Trans fluid or equivalent universal tractor transmission fluid (UTTF) meeting IH specifications. Consult manual.
Common Wear Points:
Clutch wear, hydraulic pump output degradation, PTO clutch engagement issues, steering wear, and potential seal leaks in the transmission/rear axle.
Electrical Challenges:
Aging wiring harnesses can lead to intermittent issues or complete failures in lighting and starting systems.
Manufacturer Era:
Part of the legacy of International Harvester's agricultural machinery division, known for robust and reliable farm equipment.
Series Placement:
The 444 was part of International Harvester's '400' series, representing a mid-size utility tractor, often succeeding models like the 354/374.
Production Period:
Approximately mid-1960s to early 1970s (e.g., 1965-1975, specific years may vary).
