Target Audience:
Owners, mechanics, and restoration specialists of Allis-Chalmers D-19 Diesel tractors.
Tractor Class:
Utility tractor, designed for a wide range of agricultural tasks.
Value Proposition:
Provides essential technical data for maintaining and repairing a classic agricultural tractor, ensuring operational longevity and value retention.
Manual Utility:
Enables efficient troubleshooting, accurate repairs, and proper preventative maintenance for the Allis-Chalmers D-19 Diesel.
Restoration Guide:
Crucial for collectors and restorers seeking to bring their D-19 Diesel back to original specifications and working order.
Systems Covered:
Engine, fuel system, cooling system, lubrication system, electrical system, transmission, clutch, hydraulics, steering, brakes, front axle, rear axle, PTO, chassis, body, troubleshooting.
Estimated Page Count:
Approximately 300-500 pages (typical for comprehensive service manuals of this era)
Manual Type:
Workshop Repair Service Manual
Engine System:
Complete overhaul, component testing, timing, valve adjustments, lubrication, cooling system service, fuel injection system diagnostics and repair.
Transmission System:
Disassembly, inspection, assembly, gear shifting mechanisms, clutch service, PTO engagement.
Hydraulic System:
Hydraulic pump, control valves, cylinders, fluid specifications, troubleshooting for lift and auxiliary functions.
Electrical System:
Wiring diagrams, starter, generator/alternator, battery, lighting, ignition system (if applicable to diesel variants), troubleshooting.
Steering System:
Mechanical steering, power steering (if equipped), components, adjustment, and repair.
Brake System:
Drum brake service, adjustment, hydraulic lines, master cylinder, parking brake.
Front Axle And Steering:
Spindle service, kingpin checks, tie rod end replacement, front wheel bearing adjustment.
Maintenance Procedures:
Regular service intervals, lubrication points, filter replacement (oil, fuel, air), fluid level checks, battery maintenance.
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation of all major systems.
Troubleshooting Guides:
Diagnostic flowcharts, common problems and their solutions, symptom-based troubleshooting.
Engine Rebuild Procedures:
Detailed steps for cylinder head removal/installation, piston and ring replacement, bearing service, crankshaft inspection.
Hydraulic Cylinder Rebuild:
Seals replacement, cylinder honing, rod straightness checks.
Governor Adjustment:
Calibration and adjustment of the engine governor for stable RPMs under varying loads.
Depth Of Information:
Comprehensive, suitable for professional mechanics and experienced owner-operators. Includes detailed specifications, tolerances, and repair procedures.
Torque Specifications:
Includes essential torque values for critical fasteners (e.g., cylinder head bolts, main bearings, connecting rod bolts).
Clearances And Tolerances:
Specific measurements for valve lash, bearing clearances, piston-to-cylinder wall clearance, ring gap.
Wiring Diagrams:
Detailed electrical schematics for all systems, including lighting, starting, charging, and accessory circuits.
Part Numbers And Diagrams:
May include exploded view diagrams and references to some original part numbers where applicable within service context.
Engine Family:
Allis-Chalmers Diesel (Specific engine model varies by production year and configuration)
Engine Bore Stroke Typical:
Commonly around 3.875" bore x 4.375" stroke for a typical 4-cylinder diesel.
Typical Horsepower Range:
Ranges typically between 50-70 PTO horsepower, depending on specific engine variant.
Typical Displacement Range:
Commonly in the 250-300 cubic inch range for 4-cylinder diesel engines.
Injection System:
Direct injection, typically with Bosch or similar proprietary injection pumps and injectors.
Injector Pressure:
Specific injector opening pressures will be detailed in the manual, crucial for proper combustion.
Engine Oil Change Interval:
Typically every 50-100 operating hours, or annually, depending on operating conditions.
Fuel Filter Replacement:
Recommended at 250-500 operating hours or as per manual guidance, especially after encountering contaminated fuel.
Engine Oil Type:
API CD or MIL-L-2104B/C specification diesel engine oil, viscosity grade SAE 10W-30 or SAE 30 depending on ambient temperature.
Hydraulic Fluid Type:
Allis-Chalmers Type 1 hydraulic fluid or equivalent (e.g., UTF - Universal Tractor Transmission Fluid) with specified viscosity.
Transmission Fluid Type:
EP (Extreme Pressure) gear lubricant, e.g., SAE 80W-90, or as specified for the transmission and final drives.
Coolant Type:
Ethylene glycol-based antifreeze mixed with distilled water, typically a 50/50 ratio.
Grease Specifications:
General purpose lithium-based grease for lubrication points.
Common Wear Items:
Clutch wear, hydraulic pump leaks, injector pump timing issues, exhaust manifold cracks, starter motor brushes, PTO clutch packs.
Troubleshooting Pointers:
Hard starting, loss of power, hydraulic system sluggishness, transmission hard shifting, rear axle noise are common areas needing attention.
