Positioning:
Essential diagnostic and repair resource for owners and technicians of the Allis-Chalmers Model RC tractor, aimed at maintaining and restoring operational efficiency.
Comparison:
This factory service manual offers a level of detail and accuracy typically exceeding generic aftermarket repair guides, providing direct factory specifications and procedures.
Features:
Comprehensive coverage, clear table of contents for easy navigation, detailed troubleshooting guides, and explicit repair instructions.
Primary Coverage:
All Service and Repair Information
Additional Coverage:
Troubleshooting, Maintenance, Wiring Diagrams
Estimated Page Count:
N/A (Digital format, size dependent on specific publication)
Type:
Factory Service Repair Manual / Workshop Manual
Engine:
Detailed repair and overhaul procedures, fuel system, ignition system, cooling system, lubrication system.
Transmission:
Repair, adjustment, and maintenance of transmission components, clutch, and drive lines.
Hydraulics:
Service and repair of hydraulic systems, including pump, cylinders, and control valves.
Electrical:
Wiring diagrams, troubleshooting of electrical components, starter, generator, lighting.
Steering:
Adjustment and repair of steering mechanisms.
Braking System:
Service and repair of brake components and operation.
Chassis And Frame:
Inspection and repair of chassis components, suspension, and running gear.
Power Takeoff Pto:
Maintenance and repair of the PTO system.
Rear Axle And Differential:
Service, repair, and adjustment of the rear axle, differential, and final drives.
Front Axle And Steering:
Front axle components, kingpins, steering linkage, and adjustment procedures.
Maintenance:
Scheduled maintenance, lubrication, filter changes, tune-ups.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and uncommon faults.
Repair And Overhaul:
Step-by-step instructions for disassembling, repairing, and reassembling major components and systems.
Adjustments:
Precise adjustment procedures for various systems to ensure optimal performance and longevity.
Wiring Diagrams:
Comprehensive electrical schematics for diagnosing and repairing wiring issues.
Torques And Clearances:
Specific torque values for critical fasteners and specified clearances for engine and transmission components.
Troubleshooting Charts:
Systematic charts that correlate symptoms with likely causes and corrective actions.
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds. Suitable for professional mechanics and experienced DIY users.
Diagnostic Tools:
Mentions required special tools and common diagnostic techniques for the era.
Engine Type:
Typically powered by gasoline or distillate engines; specific engine model varies by production year and configuration. Common engines included the Allis-Chalmers Model G or similar inline-four cylinder engines.
Horsepower:
Varies by specific engine installed, but generally in the 30-45 PTO horsepower range.
Torque:
Varies by specific engine installed.
Carburetor:
Typically equipped with a Marvel-Schebler or Zenith carburetor; specific model and jetting detailed in the manual.
Fuel Type:
Gasoline or distillate (depending on tractor configuration).
Type:
Liquid-cooled, typically via a radiator and fan.
Oil Type:
Specific oil viscosity (e.g., SAE 30, SAE 10W-30) and API service classification detailed in the manual, often dependent on ambient temperature.
Engine Family:
Various inline four-cylinder engines were used, often designated by Allis-Chalmers part numbers or model series.
Type:
Manual transmission with a specific number of forward and reverse gears (typically 4 or 6 forward, 1 or 2 reverse).
Type:
Some variations may have offered different gear configurations or a creeper gear option.
Clutch Type:
Dry, single-plate clutch.
Gear Ratios:
Detailed gear ratio charts and specifications are included for each gear.
Transmission Oil:
Manual specifies correct type and capacity of transmission lubricant (e.g., gear oil).
Wheelbase:
Approximately 76-78 inches (1930-1981 mm), depending on configuration.
Length:
Approximately 110-120 inches (2794-3048 mm) overall.
Width:
Varies by tire size and axle width, typically around 60-70 inches (1524-1778 mm) at the rear axle.
Operating Weight:
Approximately 3,000-3,500 lbs (1361-1588 kg).
Drawbar Pull:
Specifications for drawbar pull capacity are typically found within the manual.
Engine Oil Change:
Typically every 50-100 operating hours, or annually. Specific interval detailed in the manual.
Air Filter Service:
Regular inspection and cleaning/replacement based on operating conditions, as per manual guidelines.
Greasing:
Daily or weekly greasing of pivot points, bearings, and linkages as specified in the manual.
Engine Oil Capacity:
Capacity varies by engine model; typically around 5-6 quarts (4.7-5.7 liters) including filter. Exact figure in manual.
Coolant Type:
Water/antifreeze mixture, with specific ratios and types of antifreeze recommended in the manual.
Hydraulic Fluid:
Specific hydraulic fluid type and viscosity recommended for the hydraulic system and transmission/differential.
Transmission Capacity:
Capacity varies, manual will specify exact volume for the transmission and final drive lubrication.
Common Problems:
Wear on clutch components, carburetor gumming, sealing issues in hydraulics due to age, ignition system wear, and potential cooling system leaks.
Preventative Measures:
Regular maintenance as per the manual, keeping the tractor clean and protected from elements, and addressing minor issues promptly.
Heritage:
Allis-Chalmers was a prominent American manufacturer of agricultural and industrial machinery, known for innovation and durability.
Evolution:
The Model RC was part of Allis-Chalmers' line of utility tractors, often serving as a versatile machine for various farming tasks. It evolved from earlier models and paved the way for later designs.
Production Years:
Typically produced from the late 1930s through the 1940s, with specific years varying based on exact configurations and market demands.
Manufacturing Location:
United States
