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Allis Chalmers

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

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

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Machine data plateRef 81809
Brand
Allis Chalmers
Equipment
Tractors
Models covered
C
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your serial range? Ask us before you buy
🏷️ Basic Information
Identification
Make:
Allis Chalmers
Model:
D-21 Series II
Model Variant:
Series II
Production Years Covered:
1965-1969
👋 Introduction
Market Position
Target Audience:
Farm operators and agricultural equipment technicians seeking a comprehensive service manual for maintenance and repair.
Market Position:
The D-21 Series II was Allis Chalmers' largest and most powerful row-crop tractor at its introduction, competing with other high-horsepower models from John Deere and International Harvester.
Competitive Analysis
Advantages:
The D-21 Series II featured a robust 6-cylinder diesel engine known for torque and durability, along with advanced features like power shifting and power steering.
Key Features
Key Features:
Powerful 426 cu in engine, power shift transmission, closed-center hydraulic system, and comfortable operator platform.
📋 Manual Details
Manual Information
Coverage Areas:
This service manual covers the complete Allis Chalmers D-21 Series II tractor including engine, transmission, hydraulics, electrical system, and chassis components.
Page Count:
Approximately 200 pages of detailed instructions, diagrams, and specifications.
Manual Type:
WSM (Workshop Service Manual)
Language:
English
Format:
PDF (Digital Download)
📖 Manual Coverage
Systems Covered
Engine:
Complete engine overhaul procedures including disassembly, inspection, and reassembly.
Fuel System:
Fuel injection pump, injectors, and fuel tank service.
Electrical:
Wiring diagrams, starter, alternator, and lighting system.
Transmission:
Power shift transmission and final drive service.
Hydraulic System:
Hydraulic pump, valves, cylinders, and 3-point hitch adjustments.
Steering and Brakes:
Power steering and braking system maintenance.
Chassis:
Front axle, rear axle, and wheels.
Procedures Included
Maintenance Tasks:
Routine maintenance procedures with specifications and torque values.
Repair Steps:
Step-by-step repair instructions with exploded views and diagrams.
Overhaul Guides:
Major component overhaul guides for engine and transmission.
Technical Depth
Technical Data:
Includes comprehensive specifications, tolerances, and adjustment data.
Parts Information:
Reference to part numbers and diagrams for ordering components.
📊 Manual Specifications
File Format
File Type:
PDF (Portable Document Format)
Compatibility:
Works on any device with a PDF reader (Windows, Mac, Linux, iOS, Android).
Requirements:
No special software required; standard PDF viewer is sufficient.
Searchability:
Text searchable for quick lookup of terms and sections.
Print Quality
Print Quality:
High-resolution scans and clear diagrams for legibility.
Binding and Paper
Binding Type:
Digital (no physical binding)
Paper Type:
N/A - digital product
⚙️ Engine Specifications
Primary Engine
Engine Type:
Allis Chalmers 426 cu in (7.0 L) 6-cylinder diesel
Horsepower:
Approximately 120 hp (PTO)
Fuel System:
Direct injection with Robert Bosch in-line fuel injection pump
Cooling:
Liquid-cooled
Engine Options
Engine Options:
No other engine options were offered; the 426 engine was standard.
🔧 Transmission
Transmission Types
Standard Transmission:
8-speed manual with two ranges (4 speeds in each range).
Optional Transmission:
Power Shift (T-14) with 10 forward speeds (without clutching).
Features
Features:
Power shift allows shifting under load without clutch; independent PTO.
📐 Dimensions
Exterior
Wheelbase:
Approximately 84.5 inches (214 cm)
Length:
Approximately 150 inches (381 cm)
Weights
Curb Weight:
Approximately 10,000 lbs (4,536 kg) with cab and fluid
🛡️ Safety Features
Ratings / Crash Test
Crash Test:
N/A - agricultural tractor, not rated for crash safety
Active Features
Active Safety:
Dual braking pedals, power steering for maneuverability, and a wide field of vision for the operator.
Passive Features
Passive Safety:
Roll-over protection (ROPS) was offered as an option; seat belts were provided.
💡 Technology Features
Infotainment
Audio System:
N/A - tractors of this era did not have infotainment systems
Driver Assistance
Driver Assistance:
Power steering and power brakes (optional) to ease operation; no electronic assists.
🔧 Maintenance
Service Intervals
Engine Oil:
Change every 100 hours of operation.
Transmission Oil:
Check daily; change every 1000 hours.
Hydraulic Fluid:
Check level daily; change as per maintenance schedule in manual.
Air Filter:
Clean or replace every 500 hours.
Fluid Specifications
Engine Oil:
SAE 30 (API CI-4 or better) for diesel engines.
Transmission Fluid:
Allis Chalmers Power Fluid 821 or equivalent.
Hydraulic Fluid:
Same as transmission fluid to maintain system integrity.
Common Issues / Wear Items
Known Issues:
Fuel injection pump wear, clutch wear on manual transmission models, and hydraulic pump leaks are common.
Common Wear Items:
Brake discs, clutch plates, and tie rod ends.
📚 Vehicle History
Brand Heritage
Manufacturer:
Allis Chalmers Manufacturing Company, known for agricultural equipment.
Model Evolution
Evolution:
The D-21 was introduced in 1963; the Series II improved engine power and reliability.
Production Location
Production Location:
West Allis, Wisconsin, USA.
🏆 Awards & Recognition
Recognitions
Industry Recognition:
The D-21 Series II was well regarded for its power and comfort, setting a standard in the tractor industry.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the serial range before you buy

Manufacturers change procedures and part numbers by serial-number break. If your data plate shows a serial prefix that is not listed above, contact us with the model and serial number and we will confirm coverage before you order.

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  • Print-ready PDF Searchable text, print the pages you need for the workshop.
  • Phone, tablet, PC Open it in the cab, the workshop or the office.