Target Audience:
Owners, operators, mechanics, and parts departments of Allis Chalmers H-3 and HD-3 crawler tractors, particularly DIY enthusiasts seeking to maintain or repair their equipment.
Value Proposition:
Provides essential, OEM-level parts identification and diagrams, crucial for accurate part ordering and understanding machine components, leading to cost savings on repairs and maintenance.
Identifier:
Original Equipment Manufacturer (OEM) Parts Catalog compiled by Allis Chalmers.
Benefit Statement:
Indispensable resource for identifying, sourcing, and correctly installing replacement parts, crucial for maintaining the operational integrity of these classic crawler tractors.
Engine And Powertrain:
Complete breakdown of engine components, fuel system, lubrication system, cooling system, exhaust system, transmission, final drives, and hydraulics.
Undercarriage:
Detailed parts listings for track frames, rollers (track rollers, carrier rollers), idlers, sprockets, recoil springs, and track assemblies.
Operator Controls:
Components related to steering levers, throttle controls, brake pedals, and operator station parts.
Frame And Structure:
Parts for the main tractor frame, front frame, drawbar, and any associated structural components.
Hydraulic System:
Components for hydraulic pumps, valves, cylinders, hoses, and reservoirs, including parts for implements if applicable.
Parts Identification:
Comprehensive identification of all replaceable parts with corresponding part numbers and descriptive names.
Diagrams:
High-quality, detailed exploded view diagrams illustrating the assembly and disassembly of various tractor systems.
Part Number Reference:
Essential for ordering correct replacement parts from dealers or aftermarket suppliers.
Depth:
Detailed parts catalog, focused on component identification, numbering, and exploded views for assembly/disassembly reference. Not a repair or service manual in terms of procedural instructions but essential for parts procurement and visual understanding of assembly.
Compatibility:
Compatible with all versions of Windows & Mac, APP ISO, iPhone, iPod, Android, etc., requiring Adobe PDF Reader.
Printability:
All pages are printable, allowing for physical reference.
Binding Method:
N/A (Digital Download)
Paper Quality:
N/A (Digital Download)
Engine Model H3:
Typically equipped with a gasoline or diesel engine, likely a 4-cylinder Hercules or Continental engine (specific model varies by production year and configuration).
Engine Model Hd3:
Typically equipped with a diesel engine, likely a 4-cylinder Hercules or Continental diesel engine (specific model varies by production year and configuration).
Horsepower H3:
Estimated 35-45 HP range for gasoline variants, higher for diesel (exact figures vary by engine and rating).
Horsepower Hd3:
Estimated 40-50 HP range for diesel variants (exact figures vary by engine and rating).
Fuel Type H3:
Gasoline or Diesel (depending on configuration)
Carburetion Or Injection:
Gasoline variants use carburetors; Diesel variants use injection systems (e.g., Bosch, CAV, or similar).
Transmission Type:
Manual transmission with a sliding gear system, likely offering multiple forward and reverse gears (e.g., 4-5 forward, 1-2 reverse).
Optional Transmission:
Some models may have offered an optional torque converter or power shift transmission, though less common than the standard manual.
Clutch Type:
Dry, single-plate or dual-plate clutch.
Gear Selection:
Typically controlled by a main gear shift lever and a range selector.
Length:
Approximately 100-120 inches (254-305 cm) without implement.
Width:
Approximately 55-65 inches (140-165 cm) over tracks.
Height:
Approximately 50-60 inches (127-152 cm) to top of engine housing.
Operating Weight H3:
Approximately 4,000 - 5,000 lbs (1814 - 2268 kg).
Operating Weight Hd3:
Approximately 5,000 - 6,000 lbs (2268 - 2722 kg).
Safety Certification:
As an older piece of industrial equipment, specific safety ratings (like modern vehicle crash test ratings) are not applicable. Safety compliance would be per industrial equipment standards of its era.
Operator Safety Features:
Features typically include robust manual braking systems, operator presence control (engine stops if operator leaves seat), and secure steering mechanisms.
Structural Integrity:
Heavy-duty steel construction for operator protection against rollovers and falling objects, though FOPS/ROPS may not have been standard initially.
Engine Oil Change:
Typically every 100-250 operating hours, depending on operating conditions. Refer to specific engine manufacturer recommendations.
Transmission Oil Change:
Typically every 500-1000 operating hours. Check for specific fluid types.
Greasing:
Regular greasing of pivot points, track rollers, idlers, and other lubrication points required daily or weekly depending on usage.
Engine Oil Viscosity Gas:
SAE 10W-30 or 10W-40 for gasoline engines, SAE 30 for diesel engines in warmer climates (consult original manual for precise recommendations).
Engine Oil Viscosity Diesel:
SAE 30 or 15W-40 for diesel engines (consult original manual for precise recommendations).
Transmission Hydraulic Fluid:
EP 90 Gear Lube for manual transmission, Tractor Hydraulic Fluid (THF) or equivalent for hydraulic systems. Specific OEM fluid type should be verified.
Track Wear:
Track components (pads, links, pins, bushings) are subject to wear and require periodic tension adjustment and eventual replacement.
Hydraulic Leaks:
Aging seals and hoses in the hydraulic system can lead to leaks, requiring replacement of specific components.
Engine Tune Up:
Spark plug fouling (gasoline), injector wear (diesel), and filter clogging are common maintenance needs.
Cooling System Maintenance:
Radiator core blockage, thermostat failure, and water pump leaks can affect engine cooling efficiency.
Manufacturer Legacy:
Allis Chalmers was a prominent American manufacturer of agricultural and industrial machinery, known for its sturdy and reliable equipment.
Development Context:
The H-3 and HD-3 were part of Allis Chalmers' line of compact crawler tractors, designed for versatility in farming, construction, and landscaping applications during the mid to late 20th century.
Production Period:
Produced primarily in the 1950s and 1960s.
Manufacturing Location:
United States (various Allis Chalmers manufacturing plants).
