Market Position:
The Allis-Chalmers D-19 was positioned as a versatile utility tractor for medium-duty farm work, competing in a robust segment of the agricultural machinery market.
Competitive Analysis:
Competed with similar models from John Deere, Farmall (International Harvester), Ford, and Massey Ferguson during its production run.
Key Features:
Offered a balance of power, maneuverability, and utility for a range of agricultural tasks. Known for its robust construction and reliable performance.
Systems Covered:
Engine, Fuel System, Cooling System, Lubrication System, Clutch, Transmission, Rear Axle, Power Take-Off (PTO), Hydraulics, Electrical System, Steering, Brakes, Front Axle, Sheet Metal, Operator's Station.
Page Count:
Estimated 500-800 pages (typical for comprehensive tractor service manuals of this era, though exact count not specified).
Manual Type:
Workshop Service Manual (WSM) / Repair Manual
Engine Service:
Detailed disassembly, inspection, repair, and reassembly procedures for all major engine components, including cylinder head, pistons, rings, crankshaft, camshaft, timing gears, lubrication, and cooling systems.
Fuel System Service:
Maintenance and repair of the carburetor, fuel pump, fuel filter, and fuel lines. Includes adjustment procedures and troubleshooting.
Transmission Service:
Complete overhaul instructions for the gearbox, including gear inspection, bearing replacement, clutch pack servicing, and shift mechanism adjustments.
Hydraulic System Service:
Procedures for repairing the hydraulic pump, control valves, cylinders, and reservoir. Includes troubleshooting for common hydraulic issues.
Electrical System Service:
Wiring diagrams, troubleshooting guides, and repair procedures for the starter, generator/alternator, battery, ignition system, lighting, and instrumentation.
Preventive Maintenance:
Scheduled maintenance tasks, lubrication points, fluid change intervals, and filter replacement procedures.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common operational problems, often with symptom-based tables.
Disassembly Reassembly:
Step-by-step instructions with detailed illustrations for dismantling and rebuilding all major tractor components.
Adjustment Calibration:
Procedures for adjusting brakes, clutch, engine timing, carburetor settings, and hydraulic controls.
Technical Depth:
Comprehensive, suitable for professional mechanics and experienced DIY users. Covers everything from basic adjustments to complete engine and transmission overhauls.
Engine Make:
Allis-Chalmers
Engine Model:
Various diesel and gasoline engines offered, typically a 4-cylinder model.
Engine Displacement:
Likely in the range of 200-250 cubic inches (e.g., 226.6 cu in for diesel variants, 201 cu in for gasoline).
Engine Configuration:
4-Cylinder, Inline
Horsepower Drawbar:
Estimated 40-50 HP (Drawbar HP), depending on engine variant and specific configurations.
Horsepower Pto:
Estimated 45-55 HP (PTO HP), depending on engine variant and specific configurations.
Fuel Type:
Diesel and Gasoline (depending on specific model variant)
Fuel Delivery:
Typically a distributor-type injection pump for diesel, and carburetor for gasoline models.
Transmission Type:
Constant Mesh Gearbox
Number Of Gears Forward:
Typically 6 or 8 speeds forward.
Number Of Gears Reverse:
Typically 2 speeds reverse.
Optional Transmission Features:
Possible options could include a multi-speed PTO or creeper gears depending on specific configurations.
Clutch Type:
Two-stage dry clutch (for independent PTO and transmission engagement).
Wheelbase:
Approx. 80-85 inches (dependent on configuration).
Overall Length:
Approx. 120-130 inches (without implements).
Overall Width:
Approx. 65-75 inches (variable track width).
Operating Weight:
Approx. 4,500 - 5,500 lbs (unballasted).
Safety Ratings:
Tractors of this era typically did not undergo formal crash safety ratings as do modern automobiles. Safety information would focus on operational hazards and protective measures.
Active Safety Features:
Brake system (mechanical drum or disc type), operator presence lever (to disengage PTO/transmission when operator leaves seat), reliable steering mechanism.
Passive Safety Features:
Operator's seat, protective fenders, potential for ROPS (Roll-Over Protective Structure) installation depending on year and configuration, though often an aftermarket addition.
Infotainment Systems:
N/A (Tractors of this era typically lacked infotainment systems; focus was on functional instrumentation).
Driver Assistance Features:
N/A (No electronic driver assistance features were standard or common).
Connectivity Features:
N/A
Instrumentation:
Basic gauges including tachometer, oil pressure, coolant temperature, fuel level, and ammeter/voltmeter. Warning lights for critical functions.
Engine Oil Change:
Every 100-200 operating hours or annually, depending on usage and oil type.
Transmission Hydraulic Fluid Change:
Typically every 500-1000 operating hours or bi-annually.
Air Filter Service:
Check frequently, clean or replace as needed, especially in dusty conditions.
Engine Oil Type:
API CD or CE classification diesel engine oil, viscosity grade SAE 30 or 10W-30 depending on ambient temperature.
Transmission Hydraulic Fluid Type:
Allis-Chalmers Hy-Way fluid, THF (Tractor Hydraulic Fluid), or equivalent (e.g., CAT TO-4 fluid).
Coolant Type:
Ethylene glycol-based antifreeze and water mixture (50/50 ratio) with rust inhibitors.
Known Issues:
Potential for wear on transmission gears, clutch wear, hydraulic pump and cylinder leaks, carburetor issues (for gasoline models), and electrical system component failure over time.
Brand Heritage:
Allis-Chalmers was a prominent American manufacturer of agricultural and industrial machinery, known for its innovation and distinctive orange livery.
Model Evolution:
The D-19 succeeded earlier models and was part of the D-series line of tractors that emphasized practicality and power for its class. It was developed to meet the evolving needs of farmers in the mid-20th century.
Production Years:
Approximately 1959-1963.
Manufacturing Location:
Allis-Chalmers factories in the United States.
