Segment:
Compact utility tractor, highly regarded for its innovative design and versatility in its era.
Competitors:
Competed with other small utility tractors from manufacturers like Ford, John Deere, and International Harvester during its production run.
Design Innovation:
Featured a unique front-mounted engine and driver's position, providing excellent visibility and control over front-mounted implements.
Versatility:
Designed for a wide range of agricultural tasks, especially those involving specialized front-mounted attachments like mowers, cultivators, and loaders.
Ease Of Use:
Intended to be user-friendly for a variety of operators.
Engine:
Detailed information on disassembly, inspection, repair, and reassembly of the engine, including valve train, cooling system, lubrication system, and fuel system.
Transmission:
Coverage of the transmission system, including gear shifting mechanisms, clutch, and gearbox maintenance and repair.
Hydraulics:
Information on the hydraulic system, including pump, cylinders, control valves, and fluid lines for implement operation.
Electrical:
Comprehensive coverage of the tractor's electrical system, including battery, starter, generator/alternator, ignition system, lighting, and wiring diagrams.
Steering:
Details on the steering mechanism, including steering column, linkages, and adjustments.
Braking:
Information on the braking system, including brake shoes, drums, linkages, and adjustments.
Chassis And Frame:
Details on the tractor's frame, axle assemblies, and mounting points.
Operator Controls:
Information regarding the layout and function of all operator controls.
Routine Maintenance:
Detailed steps for scheduled maintenance, including lubrication points, fluid changes, filter replacements, and general inspection.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and uncommon problems, often presented in a step-by-step format.
Component Overhaul:
In-depth instructions for the complete disassembly, cleaning, inspection, repair, and reassembly of major tractor components.
Adjustments:
Procedures for making necessary adjustments to various systems, such as clutch engagement, brake settings, and linkage alignment.
Wiring Diagrams:
Schematic diagrams illustrating the tractor's electrical system for diagnostic and repair purposes.
Special Tools:
Identification and usage instructions for any specialized tools required for specific repair procedures.
Depth Level:
Comprehensive, covering from basic maintenance to complete component rebuilds and advanced diagnostics.
Software Requirements:
Adobe PDF Reader
Searchability:
Typically searchable text, allowing for quick information retrieval.
Illustration Quality:
High-quality illustrations, diagrams, and photographs to aid in repair procedures.
Binding:
Not applicable for digital PDF format. Original manuals would have had various bindings (spiral-bound, perfect-bound).
Paper:
Not applicable for digital PDF format. Original manuals were typically printed on durable paper.
Engine Manufacturer:
Hercules (often for early models)
Engine Model:
Typically a 4-cylinder, gasoline or kerosene engine. Specific model numbers vary.
Displacement:
Approx. 113 cubic inches (1.85 Liters) for common variants.
Horsepower:
Approx. 24-28 PTO horsepower, depending on engine tune and fuel type.
Torque:
Specifications vary; emphasis on reliable torque for its intended applications.
Fuel Type:
Gasoline, Kerosene (dual-fuel options existed)
Carburetor:
Typically a downdraft carburetor, specific model varies by engine.
Cooling Type:
Liquid-cooled
Oil Type:
API SF or SG service classification motor oil, typically SAE 30W or 10W-30 depending on temperature. Refer to manual for exact specification.
Transmission Type:
Manual sliding gear transmission
Number Of Speeds:
Typically 4 forward gears and 1 reverse gear.
Clutch:
Single-plate, dry clutch.
Differential Lock:
Differential lock for improved traction available on some models.
Wheelbase:
Approximately 68 inches (1727 mm).
Length:
Approximately 100 inches (2540 mm) without implements.
Width:
Variable depending on tire size and tread setting, typically around 55-65 inches (1397-1651 mm).
Operating Weight:
Approximately 2000-2500 lbs (907-1134 kg) depending on configuration.
Engine Oil Change:
Every 50-100 operating hours or annually, whichever comes first. Consult manual for specific intervals.
Air Filter Cleaning:
As needed, based on operating conditions. Refer to manual for specific cleaning and replacement intervals.
Grease Points:
Daily or weekly lubrication of all grease fittings, depending on usage frequency.
Engine Oil Capacity:
Approx. 5 quarts (4.7 Liters) with filter.
Coolant Type:
Ethylene glycol-based antifreeze mixed with water for a 50/50 solution. Specific freeze protection level required.
Transmission Hydraulic Fluid:
Allis-Chalmers special transmission fluid (or equivalent) for shared transmission/hydraulic reservoir. Capacities vary; consult manual.
Carburetor Issues:
Varnishing of fuel and gumming of carburetor jets can cause starting and running problems if the tractor sits for extended periods.
Ignition System Reliability:
Older ignition systems (points, condenser, coil) may require regular tuning and replacement of wear items for optimal performance.
Hydraulic Leaks:
Aging seals and hoses in the hydraulic system can lead to leaks and reduced system efficiency.
Wear On Linkages:
Wear in steering, brake, and clutch linkages can lead to sloppy operation and require adjustment or replacement of worn components.
Radiator And Cooling System:
Clogged radiators or faulty thermostats can lead to overheating issues.
Brand Background:
Allis-Chalmers was a major American manufacturer of agricultural, construction, and industrial machinery, known for its innovation and distinctive 'Persian Orange' color.
Introduction Year:
Introduced in 1948.
Production End Year:
Production ceased around 1955.
Manufacturing Location:
La Crosse, Wisconsin, USA.
