🏷️ Basic Information

Make:

Allis-Chalmers

Model:

D-15 / D-15 Series II

Model Code:

D-15 / D-15 Series II

👋 Introduction

Target User:

Owners, mechanics, restorers of Allis-Chalmers D-15 and D-15 Series II tractors.

Purpose:

To provide comprehensive technical guidance for maintenance, repair, and troubleshooting.

Value Proposition:

Offers essential information for keeping vintage Allis-Chalmers tractors operational and maintaining their value.

Completeness:

Covers a wide range of mechanical, electrical, and hydraulic systems.

Diagrams Illustrations:

Expected to include detailed diagrams and exploded views for component identification and assembly.

📋 Manual Details

Coverage Type:

Workshop Service and Repair

Estimated Page Count:

Hundreds (typical for comprehensive workshop manuals)

Manual Type:

Service Manual / Workshop Manual / Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Overhaul:

Complete engine disassembly, inspection, repair, and reassembly procedures.

Fuel System:

Carburetor adjustment, fuel pump service, fuel filter replacement, fuel line troubleshooting.

Cooling System:

Radiator service, thermostat replacement, water pump repair, coolant specifications.

Lubrication System:

Oil pump service, oil filter replacement, lubrication points, oil specifications.

Ignition System:

Spark plug service, ignition timing, distributor maintenance, coil testing.

Electrical System:

Starter motor, alternator, battery service, wiring diagrams, lighting system troubleshooting.

Transmission Manual:

Clutch adjustment and replacement, transmission disassembly and reassembly, gear shifting mechanism.

Transmission Power Director:

Service and repair procedures for the Power Director transmission option.

Rear Axle And Differential:

Axle disassembly, bearing adjustment, differential service, lubrication.

Hydraulics System:

Hydraulic pump service, control valve troubleshooting, cylinder repair, hydraulic fluid specifications.

Power Take Off Pto:

PTO engagement and disengagement, PTO shaft service, PTO clutch.

Front Axle And Steering:

Front wheel bearing service, steering linkage adjustment, tie rod end replacement.

Brake System:

Brake pedal adjustment, brake shoe relining, brake master cylinder service, hydraulic brake troubleshooting.

Chassis And Frame:

Frame inspection, component mounting, hitch adjustments.

Bodywork And Fenders:

Sheet metal repair, fender attachment, panel alignment.

Operator Station:

Seat mounting, control lever adjustments, dashboard components.

Routine Maintenance:

Lubrication charts, filter replacement, fluid level checks, belt adjustments.

Troubleshooting Guides:

Diagnostic charts for common operational problems and their solutions.

Repair Procedures:

Step-by-step instructions for component repair and replacement.

Adjustment Procedures:

Detailed instructions for calibrating various systems (e.g., clutch, brakes, ignition).

Torque Specifications:

Crucial torque values for fasteners across all systems.

Special Tool Recommendations:

Identification and usage of specialized tools required for specific repairs.

Depth Of Information:

Comprehensive overhaul and rebuild procedures, suitable for experienced mechanics and serious enthusiasts.

Diagnostic Capabilities:

In-depth troubleshooting sections enabling accurate fault diagnosis.

Component Rebuild:

Detailed instructions for rebuilding major components like engines, transmissions, and hydraulic pumps.

📊 Manual Specifications

File Type:

PDF

Searchability:

Likely searchable text, enabling quick information retrieval.

Print Readability:

Designed for clear reproduction; typically includes diagrams and illustrations.

Binding Type:

N/A (Digital PDF download)

Paper Type:

N/A (Digital PDF download)

⚙️ Engine Specifications

Engine Model Gas:

Allis-Chalmers 3-cylinder gasoline (typically based on Waukesha or similar industrial engine designs).

Engine Model Diesel:

Allis-Chalmers 3-cylinder diesel (typically based on Waukesha or similar industrial engine designs).

Engine Displacement Gas:

Approximately 151 cu. in. (2.47 L) for gasoline variants.

Engine Displacement Diesel:

Approximately 151 cu. in. (2.47 L) for diesel variants.

Bore X Stroke Gas:

Typical figures might be around 3.75" x 4.5" (95.25 mm x 114.3 mm) - consult manual for exact specifications.

Bore X Stroke Diesel:

Typical figures might be around 3.75" x 4.5" (95.25 mm x 114.3 mm) - consult manual for exact specifications.

Rated Horsepower Gas:

Approximately 40-50 PTO horsepower (actual drawbar and engine HP will vary).

Rated Horsepower Diesel:

Approximately 45-55 PTO horsepower (actual drawbar and engine HP will vary).

Fuel Type:

Gasoline or Diesel

Carburetor Gas:

Single-barrel carburetor (e.g., Marvel-Schebler).

Injection System Diesel:

Indirect injection diesel with rotary or inline injection pump.

Engine Oil Capacity:

Typically around 5-6 quarts (4.7-5.7 liters) with filter change. Consult manual for precise capacity.

Coolant Capacity:

Approximately 10-12 quarts (9.5-11.4 liters). Consult manual for precise capacity.

🔧 Transmission

Standard Transmission:

Constant mesh, 4-speed or 6-speed manual transmission (depending on specific D-15 variant).

Optional Transmission:

Allis-Chalmers Power Director (a two-speed forward transmission, often described as a 'power shift' on the go).

Transmission Fluid Type:

Typically SAE 80W or SAE 90W gear oil for main transmission and differential. Power Director may have specific hydraulic fluid requirements. Consult manual for exact specifications and API ratings.

Clutch Type:

Dry, single-plate clutch.

📐 Dimensions

Wheelbase:

Approx. 79-80 inches (200-203 cm). Consult manual for exact measurements.

Overall Length:

Approx. 120-130 inches (305-330 cm). Consult manual for exact measurements.

Shipping Weight:

Around 3,500 - 4,000 lbs (1588 - 1814 kg). Consult manual for exact weights.

Operating Weight:

Varies significantly with configuration and ballast. Typically in the 4,000 - 4,500 lbs (1814 - 2041 kg) range.

🛡️ Safety Features

Safety Features:

Basic agricultural tractor safety features of the era, including robust chassis and mechanical controls. No modern electronic safety systems.

Operator Presence Control:

N/A (Mechanical tractor, typically no operator presence sensor).

Roll Over Protection Structure Rops:

Optional or aftermarket ROPS might be available; not standard on original models.

💡 Technology Features

Infotainment System:

N/A (Basic agricultural tractor, no infotainment systems).

Driver Assistance Features:

N/A (Basic agricultural tractor, no driver assistance features).

Connectivity Features:

N/A (Basic agricultural tractor, no connectivity features).

🔧 Maintenance

Engine Oil Change Interval:

Typically every 50-100 operating hours. Consult manual for specific recommendation.

Air Filter Service:

Check and clean/replace based on operating conditions, typically every 50-100 hours. Consult manual.

Fuel Filter Replacement:

As needed, or typically annually. Consult manual.

Engine Oil Specification:

API Service Classification CD (or equivalent) diesel engine oil, viscosity SAE 30 or 10W-30 depending on ambient temperature. Consult manual for exact specs.

Hydraulic Fluid Specification:

Allis-Chalmers hydraulic oil, or equivalent PTO/HYD fluid (e.g., Hy-Trans). Consult manual for exact specifications and viscosity grades.

Transmission Gear Oil Specification:

API GL-4 SAE 80W-90 or SAE 90 gear oil. Consult manual for exact specifications.

Common Wear Points:

Clutch wear, PTO clutch issues, hydraulic pump wear, steering play, radiator leaks.

Electrical Component Reliability:

Vintage wiring can degrade; starter and generator/alternator can be prone to wear.

Engine Performance Degradation:

Carbon buildup, worn piston rings, valve seat wear can reduce power over time.

📚 Vehicle History

Brand History:

Allis-Chalmers was a prominent American manufacturer of agricultural and industrial machinery, known for its orange tractors and innovation.

D 15 Introduction:

The D-15 was introduced in 1957 as a more modern and powerful alternative to earlier models, fitting into the utility tractor segment.

Series Ii Introduction:

The Series II, introduced around 1960, featured updates and refinements over the original D-15.

Production Years:

D-15: 1957-1960. D-15 Series II: 1960-1966.

Manufacturing Location:

Gopher, Illinois, USA (Allis-Chalmers Tractor Group).

🏆 Awards & Recognition

Industry Recognition:

Allis-Chalmers tractors were generally well-regarded for their robust construction and reliability for their era. Specific awards for the D-15 model are not widely documented but it was a significant contributor to the brand's market share.