Allis Chalmers Model D-21 series II Tractor Workshop Service Repair Manual

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Stichworte: Agriculture Allis Chalmers C D-21 series II Tractor Tractors

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Beschreibung

The Allis Chalmers D-21 Series II Tractor represents a robust and capable machine, engineered for demanding agricultural tasks. Produced between 1959 and 1969, this powerful row-crop tractor was known for its heavy-duty construction and reliability in challenging field conditions. Its design prioritized significant drawbar horsepower, making it suitable for extensive plowing, cultivation, and hauling operations. The D-21 Series II competed with other major manufacturers of its time, earning a reputation for durability and performance in the agricultural sector, a testament to Allis Chalmers' commitment to quality engineering. This comprehensive Workshop Service Repair Manual provides essential information for the maintenance and repair of the Allis Chalmers D-21 Series II Tractor. It covers a wide array of systems, including the engine, fuel, cooling, lubrication, electrical, transmission, drivetrain, hydraulics, steering, brakes, chassis, and bodywork. Detailed procedures for routine maintenance, complete overhauls, component replacement, and systematic troubleshooting are included. Technical data, specifications, torque values, and diagnostic charts are also provided, making this manual an indispensable resource for owners, mechanics, and technicians seeking to preserve the operational integrity and longevity of their tractor.

🏷️ Basic Information

Identification

Make:

Allis Chalmers

Model:

D-21 Series II Tractor

Product Type:

Workshop Service Repair Manual

Codes

Manual Identifier:

Likely contains manufacturer's internal part/manual numbers for the D-21 Series II, specific numbers not provided in product description.

👋 Introduction

Market Position

Historical Context:

The Allis Chalmers D-21 was a powerful row-crop tractor produced by Allis Chalmers, known for its robust build and capabilities in demanding agricultural applications during its production era.

Competitive Analysis

Competitors:

Competed with models from John Deere, International Harvester, and Ford during its production run.

Key Features

Utility:

Designed for heavy-duty farm work, including plowing, cultivation, and hauling, often equipped with significant drawbar horsepower.

Durability:

Reputation for heavy-duty construction and reliability in tough field conditions.

📋 Manual Details

Coverage Areas

Systems Covered:

Engine, fuel system, cooling system, lubrication, electrical system, transmission, drivetrain, hydraulics, steering, brakes, chassis, bodywork, and troubleshooting.

Page Count

Page Count:

Actual page count not specified in product description. Typically, comprehensive service manuals for tractors of this era are between 500-1000+ pages.

Manual Type

Manual Type:

Workshop Service Repair Manual

Language

Language:

English

Format

Format:

PDF Download (instant download mentioned)

📖 Manual Coverage

Systems Covered

Engine Overhaul:

Detailed procedures for engine disassembly, inspection, repair, and reassembly, including cylinder head, pistons, crankshaft, bearings, and timing.

Fuel System Servicing:

Coverage of fuel injection pump, injectors, fuel lines, filters, and troubleshooting of fuel delivery issues.

Cooling System Maintenance:

Radiator, water pump, thermostat, coolant flow, and troubleshooting of overheating or cooling inefficiencies.

Lubrication System Repair:

Oil pump, oil filter, lubrication passages, and oil pressure checks.

Electrical System Diagnostics:

Wiring diagrams, starter, generator/alternator, battery, ignition system, lighting, and instrument panel troubleshooting.

Transmission And Drivetrain:

Clutch, gearbox, differential, final drives, PTO (Power Take-Off) systems, and axle repairs.

Hydraulic System Service:

Hydraulic pump, control valves, cylinders, lift arms, external hydraulic connections, and troubleshooting of hydraulic lift or power steering issues.

Steering System Repair:

Steering box, linkage, and power steering components.

Brake System Maintenance:

Brake master cylinder, brake shoes/pads, brake lines, and adjustment procedures.

Chassis And Frame:

Frame inspection, repairs, and front axle assembly.

Bodywork And Sheet Metal:

Fender repairs, hood, grille, and operator station components.

Procedures Included

Routine Maintenance:

Detailed schedules and instructions for oil changes, filter replacements, lubrication points, and general inspections.

Troubleshooting Guides:

Systematic diagnostic procedures for identifying and resolving common and uncommon problems.

Complete Rebuilds:

Step-by-step instructions for complete disassembly and reassembly of major components like engines and transmissions.

Component Replacement:

Instructions for replacing specific parts such as alternators, water pumps, starter motors, and clutch components.

Adjustment Procedures:

Specific adjustments for engine timing, valve lash, clutch engagement, and brake systems.

Calibration And Setting:

Procedures for setting fuel injection timing, PTO engagement, and hydraulic control sensitivity.

Technical Depth

Depth Of Information:

Comprehensive, covering basic maintenance to major overhauls and in-depth diagnostics, suitable for professional mechanics and experienced owners.

Diagnostic Charts:

Likely includes fault trees or diagnostic flowcharts for various operational issues.

Technical Data Tables:

Includes specifications, tolerances, torque values, and clearances for all major components.

📊 Manual Specifications

File Format

File Format:

Searchability:

Likely searchable text within the PDF for efficient information retrieval.

Print Quality

Print Quality:

High-resolution scans suitable for printing clear diagrams and text.

Binding Type

Binding Type:

N/A (Digital PDF)

Paper Type

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Manufacturer:

Allis Chalmers

Engine Model:

D-21 Series II utilized a specific Allis Chalmers diesel engine. Exact model designation requires further research but typically was a multi-cylinder diesel.

Engine Type:

Diesel

Cylinder Count:

Typically 6 cylinders for the D-21.

Displacement:

Approximately 425 cubic inches (7.0 L). Specific to Series II needs verification.

Performance

Horsepower Rating:

Drawbar horsepower typically in the range of 70-80 HP. PTO horsepower would be similar or slightly higher. Exact ratings vary by configuration.

Torque Rating:

Torque specifications are crucial for heavy draft work. Detailed figures are found within the manual.

Fuel System

Fuel Type:

Diesel Fuel

Injection System:

Likely a Bosch or similar inline injection pump with direct injection.

Fuel Filter Part Numbers:

Specific part numbers for fuel filters would be detailed in the maintenance section of the manual.

🔧 Transmission

Standard

Transmission Type:

Manual Synchromesh transmission.

Gear Configurations:

Typically offered with 8 forward and 2 reverse gears, or similar configurations depending on the PTO option.

Optional

Power Take Off:

Independent PTO (IPTO) and/or transmission-driven PTO options were common.

Features

Clutch Type:

Dual-stage clutch (one for transmission, one for PTO) was a common feature.

Transmission Fluid Type:

Specific hydraulic/transmission fluid type and capacity are vital and found in the manual. Likely API GL-4 or similar gear oil for the gearbox.

📐 Dimensions

Exterior

Wheelbase:

Approx. 92-96 inches. Exact dimensions vary by configuration and are detailed in the manual.

Overall Length:

Approx. 140-150 inches. Exact dimensions vary by configuration and are detailed in the manual.

Weights

Operating Weight:

Typically around 8,000-9,000 lbs without ballast. Exact weight is specified in the manual.

Tire Sizes:

Commonly equipped with large rear tires (e.g., 18.4-38) and smaller front tires (e.g., 7.50-18). Specifics will be in the manual.

🛡️ Safety Features

Ratings

Rollover Protection:

ROPS (Roll-Over Protective Structure) was optional or dealer-installed on many tractors of this era. The manual will indicate if factory ROPS was an option and its specifications.

Active Features

Brake System:

Typically independent rear wheel mechanical drum brakes, with provisions for trailer braking.

Passive Features

Operator Station:

Designed for operator comfort and safety, though lacking modern safety features like seatbelts unless retrofitted.

💡 Technology Features

Infotainment

Instrument Panel:

Basic analog gauges for oil pressure, water temperature, ammeter, and fuel level. Hour meter is essential.

Driver Assistance

Power Steering:

Often equipped with hydrostatic power steering for ease of operation, especially with heavy front implements.

Connectivity

Pto Engagement:

Various PTO options (e.g., 540 RPM, 1000 RPM, independent PTO) are key operational features requiring specific procedures covered in the manual.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Typically every 100-200 operating hours, depending on operating conditions. Specific interval provided in manual.

Transmission Fluid Change:

Generally every 500-1000 operating hours. Specific interval detailed in manual.

Hydraulic Fluid Change:

Typically every 500-1000 operating hours. Specific interval detailed in manual.

Fluid Specifications

Engine Oil Viscosity:

Likely SAE 30 or 15W-40 diesel engine oil. Specific API service classification (e.g., CD or CE) required and provided in manual.

Coolant Type:

Ethylene glycol based antifreeze mixture, typically 50/50 with water. Specifics on type and capacity in manual.

Hydraulic Fluid Type:

Likely a UTF (Universal Tractor Transmission) fluid or specific hydraulic fluid. Capacity often exceeds 10 gallons. Manual is critical for correct type.

Known Issues

Common Wear Points:

Potential wear in transmission gears, clutch components, hydraulic pump, and engine seals due to age and usage.

Electrical Gremlins:

Wiring harness degradation, corroded connections, and failing starter/generator are common on older machinery.

Fuel System Challenges:

Injection pump seals, injector wear, and fuel line leaks can occur over time.

📚 Vehicle History

Brand Heritage

Company History:

Allis Chalmers was a prominent American manufacturer of agricultural and industrial equipment, known for its innovation and distinctive 'Persian Orange' color.

Model Evolution

Predecessors:

The D-21 was a successor to earlier Allis Chalmers large horsepower tractors, building on their design principles.

Production

Production Years:

The D-21 was produced from 1959 through 1969. The Series II designation likely refers to a later iteration within this period, introducing refinements.

Manufacturing Location:

Manufactured by Allis Chalmers in the United States.

🏆 Awards & Recognition

Recognitions

Industry Acclaim:

While specific awards for the D-21 Series II are not widely documented, Allis Chalmers tractors of this era were generally well-regarded for their performance and durability in the agricultural sector.