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Allis Chalmers

Allis Chalmers D-21 and D-21 series 2 shop Service Manual

Allis Chalmers D-21 and D-21 series 2 shop Service Manual

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Machine data plateRef 66973
Brand
Allis Chalmers
Equipment
Tractors
Models covered
175
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
Model Variant:
D-21 Series 2
Production Years:
1963-1969 (D-21), 1969-1970 (Series 2)
👋 Introduction
Market Position
Target Audience:
Farmers, contractors, and heavy equipment owners requiring a reliable, high-horsepower row-crop tractor.
Vehicle Class:
Row-crop tractor
Competitive Analysis
Advantage:
At launch, the D-21 was one of the most powerful production tractors, featuring a turbocharged diesel engine and a rugged, simple design ideal for heavy tillage.
Key Features
Transmission:
8-speed manual with high-low shift
Hydraulics:
Open center 16 GPM hydraulic system
Power Take-Off:
Independent 1000 RPM PTO
📋 Manual Details
Coverage
Coverage Areas:
Complete tear-down and rebuild procedures for engine, transmission, hydraulics, and electrical systems.
Applicable Models:
Allis Chalmers D-21 and D-21 Series 2
Physical Format
Page Count:
63 pages
Manual Type:
Workshop Service Manual
Language:
English
File Format:
PDF
Delivery Method:
Instant Download
📖 Manual Coverage
Systems Covered
Engine:
Complete overhaul, specifications, and troubleshooting
Transmission:
Disassembly, inspection, and repair of all components
Clutch:
Adjustment and replacement procedures
Final Drives:
Removal and installation instructions
Power Take-Off:
Service and repair of independent PTO system
Hydraulic System:
Pumps, valves, cylinders, and lines
Electrical System:
Wiring diagrams, starter, and alternator service
Steering:
Power steering components and adjustments
Brakes:
Service, adjustment, and rebuilding
Fuel System:
Injection pump, injectors, and fuel tank
Cooling System:
Radiator, water pump, and thermostat
Exhaust System:
Turbocharger and manifold service
Procedures Included
Maintenance:
Scheduled service tasks and inspections
Adjustments:
Valve clearance, injection timing, brake adjustment
Removal and Installation:
Step-by-step instructions for major components
Disassembly and Assembly:
Detailed procedures with torque specifications
Repair:
Overhaul and replacement guidance
Troubleshooting:
System-specific diagnostic procedures
Technical Depth
Diagrams:
Clear schematics and exploded views for part identification
Illustrations:
Detailed drawings to aid visual understanding
Photographs:
Real-world images to supplement procedures
Specifications:
Factory tolerances and torque settings
Parts Information
Parts Numbering:
Original Allis Chalmers part numbers are referenced throughout
Crossover:
Not included; use OEM parts for replacement
📊 Manual Specifications
File Specifications
File Format:
PDF
Compatibility:
Windows, macOS, Linux
Software Requirements:
Adobe Reader or any PDF viewer
Searchable:
Not specified; likely scanned images
Print Quality:
High-quality printout capable
Physical Characteristics
Binding Type:
Digital (no physical binding)
Paper Type:
N/A - digital file only
⚙️ Engine Specifications
Engine Options
Base Engine:
Allis Chalmers 6010 diesel, 6-cylinder, 4-stroke
Displacement:
426.7 cu in (7.0 L)
Aspiration:
Turbocharged
Rated Power:
93.5 hp (69.7 kW) at 2200 rpm
Maximum Power:
108 hp (80.5 kW) at 2200 rpm
Performance
Torque Rise:
Approximately 18% at rated load
Fuel System:
Direct injection
Fuel System
Injection Pump:
Robert Bosch inline type
Injectors:
Multi-hole, direct injection
🔧 Transmission
Standard Transmission
Type:
Allis Chalmers 8-speed manual
Speeds:
8 forward and 2 reverse
Gearbox:
Single-range with high-low shift
Optional Transmission
Power Director:
Dual-range transmission providing 12 forward and 3 reverse speeds
Features
Clutch:
Dry disc clutch
Final Drive:
Bull gear planetary type
📐 Dimensions
Exterior Dimensions
Wheelbase:
84.25 inches (214 cm)
Length:
141.5 inches (359 cm) (with 3-point)
Weights
Curb Weight:
Approximately 9,800 lbs (4,445 kg)
🛡️ Safety Features
Ratings / Crash Test Information
Crash Test Rating:
N/A - not applicable to tractors
Active Features
Brakes:
Mechanical drum brakes, self-adjusting
Steering:
Hydraulic power steering
Passive Features
Seat Belt:
Not standard
Rollover Protection:
ROPS was optional, not standard
💡 Technology Features
Infotainment
Audio System:
None
Display:
No infotainment screen
Driver Assistance
Hitch:
Three-point hitch (optional)
Hydraulic Outlets:
Up to three rear remote outlets
🔧 Maintenance
Service Intervals
Engine Oil Change:
Every 100 hours
Transmission/Hydraulic Fluid:
Every 1,000 hours
Fluid Specifications
Engine Oil:
API CC/CD, SAE 30 or 15W-40
Transmission/Hydraulic Fluid:
Allis Chalmers Type C-1 or MIL-L-2105
Known Issues / Common Wear Items
Injector Nozzles:
Can clog over time, affecting performance
Water Pump Seal:
Known to leak after many hours
Clutch Disc:
May wear out under heavy use
📚 Vehicle History
Brand Heritage
Manufacturer:
Allis-Chalmers Manufacturing Company
Founded:
1901 (as part of Allis-Chalmers company)
Model Evolution
Introduction:
Introduced in 1963 as successor to the
Series 2:
Launched in 1969 with updates to the transmission and styling
Production Location
Plant:
West Allis, Wisconsin, USA
🏆 Awards & Recognition
Recognition
Historical Significance:
Recognized as one of the most powerful production tractors of its time, and preserved in tractor heritage collections
Industry Impact:
Influenced design of subsequent large tractors

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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  • Instant download PDF link on your order page and by email right after payment.
  • Secure checkout Encrypted Shopify checkout — we never see your card.
  • 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.