The Allis-Chalmers D-15 tractor, produced approximately between 1959 and 1964, represents a robust and versatile workhorse in the mid-horsepower category. Designed for a wide array of agricultural and industrial tasks, this model embodies the innovation and quality for which Allis-Chalmers was known. Key features include its strong construction, reliable engine options (available in both gasoline and diesel variants), and the optional Power Director transmission, which significantly enhances shifting capabilities. The D-15 was engineered to be a dependable machine, offering a comfortable operator station and solid performance for its intended applications, solidifying its reputation as a valuable asset in its era.
This comprehensive Factory Service Repair Manual provides essential information for the maintenance, repair, and troubleshooting of the Allis-Chalmers D-15 tractor. It covers all major systems, including the engine, transmission, hydraulics, electrical system, steering, and braking. Detailed procedures for routine maintenance, component disassembly and reassembly, diagnostic testing, and complete overhauls are included. With clear instructions, torque specifications, and technical data, this manual is an indispensable resource for owners, mechanics, and technicians seeking to preserve the operational integrity and longevity of their D-15 tractor.
Market Position:
A versatile utility tractor designed for a wide range of agricultural and industrial tasks, positioned as a reliable workhorse in the mid-horsepower category.
Brand Heritage:
Allis-Chalmers was a significant American manufacturer of agricultural and construction equipment, known for its innovation and quality. The D-series tractors were a cornerstone of their product line.
Key Features:
Robust construction, versatile power, optional Power Director transmission for on-the-go shifting, comfortable operator station, reliable engine options.
Coverage Areas:
Engine, transmission, hydraulics, electrical system, steering, braking, chassis, bodywork, tune-up, troubleshooting, overhaul
Page Count:
Varies by specific publication, typically 300-500 pages
Manual Type:
Factory Service Repair Manual
Systems Covered:
Engine (Gasoline & Diesel variants), Clutch, Transmission (4-speed constant mesh), Power Director (if equipped), PTO (Power Take-Off), Rear Axle and Differential, Final Drives, Hydraulics (Power-Lift, remote hydraulics), Steering System (Power-Assist), Braking System (Internal Expanding Shoe), Electrical System (12V DC, starter, generator, lighting), Cooling System, Fuel System, Ignition System (Gasoline), Starting System, Lubrication System, Front Axle, Sheet Metal and Body, Operator's Platform, Drawbar and Hitch
Procedures Included:
Routine maintenance, scheduled servicing, component disassembly and reassembly, troubleshooting guides, diagnostic procedures, electrical system testing, hydraulic system adjustments, engine tune-up procedures, complete overhaul instructions, torque specifications, repair techniques, component replacement, adjustment procedures, specifications for measurements and clearances
Technical Depth:
Comprehensive, suitable for professional mechanics and skilled DIY enthusiasts. Covers from basic maintenance to complete engine and transmission rebuilds.
File Format:
N/A (Printed Manual)
Print Quality:
Professional, clear diagrams and text
Binding Type:
Often saddle-stitched or perfect bound
Paper Type:
Durable, semi-gloss paper suitable for workshop use
Primary Engine Gas:
Allis-Chalmers G-149, 4-cylinder, overhead valve, gasoline
Primary Engine Diesel:
Allis-Chalmers 2500 Series Diesel, 3-cylinder, direct injection, diesel
Displacement Gas:
149 cubic inches (2.45 Liters)
Displacement Diesel:
Not explicitly stated in product description, but typically around 152 cubic inches for similar models.
Horsepower Gas:
Approx. 45 belt horsepower, 40 drawbar horsepower
Horsepower Diesel:
Approx. 50 belt horsepower, 45 drawbar horsepower
Fuel System Gas:
Carburetor (e.g., Marvel-Schebler), Fuel pump
Fuel System Diesel:
Injection pump (e.g., Roosa Master), Injectors, Fuel filter
Cooling System:
Pressurized, water-cooled with fan and radiator
Lubrication System:
Forced lubrication with oil pump, oil filter
Standard Transmission:
4-speed constant mesh gearbox
Optional Transmission:
Allis-Chalmers Power Director (a clutch-assisted powershift for 4 gears, effectively providing 8 forward and 2 reverse speeds)
Transmission Features:
Robust gear trains, designed for heavy-duty agricultural use. Power Director significantly enhances operational efficiency and versatility.
Transmission Fluid Spec:
Refer to manual for specific fluid type; typically API GL-4 gear oil or a universal tractor transmission fluid (UTTF) suitable for hydraulics and wet brakes. Capacity varies.
Wheelbase:
Approximately 76 inches (1930 mm)
Overall Length:
Approximately 115 inches (2921 mm) without cultivators
Overall Width:
Approximately 65 inches (1651 mm) at rear tread
Shipping Weight:
Approximately 3,500 - 4,000 lbs (1588 - 1814 kg), depending on configuration
Operating Weight:
Up to 5,000+ lbs (2268+ kg) with fluids and ballast
Safety Ratings:
Not applicable in the modern sense of automotive crash test ratings. Focus is on mechanical safety and operator protection.
Active Features:
Brakes (Internal Expanding Shoe), PTO Clutch/Brake, Steering System (Manual or Power-Assist)
Passive Features:
Operator platform, fenders, drawbar for implement attachment, optional ROPS (Roll-Over Protective Structure) may be available or retrofitted.
Infotainment Features:
N/A - Basic tractor instrumentation (tachometer, oil pressure, temperature, fuel gauge, ammeter).
Driver Assistance Features:
Power-assist steering (optional), adjustable seat, operator controls.
Connectivity Features:
N/A
Engine Oil Change Interval:
Typically every 50 operating hours or annually. Refer to manual for specific recommendation.
Transmission Fluid Change Interval:
Typically every 500 operating hours or annually. Refer to manual.
Air Filter Maintenance:
Check and clean/replace based on operating conditions, typically every 25-50 operating hours.
Engine Oil Specification:
Refer to manual for specific API service classification and viscosity grade (e.g., SAE 30 or 10W-30 depending on temperature). Diesel engines may require specific diesel engine oil.
Coolant Specification:
Ethylene glycol based antifreeze/coolant. Mixture ratio typically 50/50 with distilled water.
Hydraulic Fluid Specification:
Refer to manual. May be same as transmission fluid (UTTF) or a specific hydraulic oil. Check for compatibility with wet brakes.
Common Issues:
Worn clutch components, leaking hydraulic seals, carburetor issues (gasoline), injection pump problems (diesel), starter motor wear, electrical component corrosion, PTO clutch adjustment.
Troubleshooting Focus:
The manual provides detailed guides for diagnosing and resolving common operational problems across all systems.
Brand History:
Allis-Chalmers Manufacturing Company was a prominent American corporation, founded in 1901, that produced a wide range of industrial, agricultural, and electrical equipment. It ceased operations in the late 1980s.
Model Evolution:
The D-15 was part of the 'D' series of tractors introduced by Allis-Chalmers in the mid-1950s, evolving from earlier models. It was designed to be a versatile, medium-horsepower tractor.
Production Years:
Approximately 1959-1964
Manufacturing Location:
Allis-Chalmers plant in West Allis, Wisconsin, USA
Industry Recognitions:
The D-15 was a popular and well-regarded tractor in its class during its production run, contributing to Allis-Chalmers' strong reputation in the agricultural market. Specific awards are not typically documented for individual tractor models of this era.
