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Allis Chalmers

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

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

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Machine data plateRef 82738
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:
D-21 Series II
Production Years Covered:
1965-1969
👋 Introduction
Market Position
Target Audience:
Farmers and large-scale agricultural operations requiring a high-horsepower row-crop tractor.
Competitive Analysis
Advantage:
One of the most powerful tractors of its era, offering exceptional lugging ability and durability.
Key Features
Key Feature 1:
Turbocharged diesel engine for high power output.
Key Feature 2:
Power shift transmission for seamless gear changes.
Key Feature 3:
Roll-Gard ROPS for operator safety (optional).
📋 Manual Details
Coverage Areas
Coverage:
Complete disassembly, inspection, repair, and reassembly procedures for all major components.
Manual Specifications
Page Count:
Over 500 pages (approximate, varies by edition).
Manual Type:
Workshop Service Repair Manual
Language:
English
Format:
Instant digital download (PDF).
📖 Manual Coverage
Systems Covered
Engine:
Complete engine overhaul, cooling, lubrication, fuel injection.
Clutch:
Clutch adjustment, removal, and replacement.
Transmission:
Power shift transmission service, gear train inspection.
Rear Axle:
Drive train, differential, final drives.
Hydraulic System:
Pump, valves, cylinders, and control linkage.
Steering:
Power steering and front axle.
Brakes:
Brake adjustment and replacement.
Electrical System:
Wiring diagrams, starting and charging system.
Power Take-Off (PTO):
PTO clutch and driveline service.
Hitch and 3-Point Linkage:
Component inspection and adjustment.
Procedures Included
Maintenance:
Regular service intervals and lubrication points.
Diagnosis:
Systematic fault finding procedures.
Repair:
Step-by-step repair guides with torque specifications.
Overhaul:
Complete rebuild procedures for major components.
Technical Depth
Level:
Detailed technical information suitable for experienced technicians and DIY owners.
Specifications:
Includes standard torque values and clearances.
Parts Information
Part Numbers:
Reference to original part numbers (where applicable).
Illustrations:
Diagrams and exploded views for parts identification.
📊 Manual Specifications
File Format
File Type:
PDF (Portable Document Format).
Compatibility:
Works on Windows, Mac, Linux, iOS, Android, and most devices with a PDF reader.
Requirements:
Requires a PDF reader such as Adobe Acrobat Reader, Foxit, or a web browser.
Searchability:
Text searchable for quick navigation.
Print Quality
Print Quality:
High-resolution scans and vector graphics for clarity.
Binding Type
Binding Type:
Digital (no physical binding).
Paper Type
Paper Type:
N/A - digital document.
⚙️ Engine Specifications
Primary Engine
Engine Type:
Allis Chalmers 2900 series, 6-cylinder diesel (naturally aspirated or turbocharged).
Displacement:
426 cubic inches (7.0 liters).
Rated Power:
Up to 135 horsepower (PTO) depending on configuration.
Engine Options Range
Naturally Aspirated:
Standard D-21 rated at 115 horsepower (approx.).
Turbocharged:
D-21 Series II with turbo, rated up to 135 horsepower (approx.).
Performance
Torque Rise:
Approximately 20% (turbo model).
Lugging Ability:
Excellent lugging characteristics for heavy field work.
Fuel System
Injection Pump:
Inline injection pump with direct injection.
Fuel Type:
Diesel
Fuel Capacity:
Approximately 40 gallons (151 liters) in dual tanks.
🔧 Transmission
Standard Transmission
Type:
Partially synchronized, 6-speed forward and 2 reverse (unsynchronized low range).
Gears:
6 forward / 2 reverse (with optional dual-range high-low).
Clutch:
Dual-stage clutch for PTO and traction.
Optional Transmission
Type:
Power Shift transmission available (4-speed power shift with forward/reverse).
Description:
Allows shifting under load without clutching.
Features
Operational:
Live PTO, independent of transmission oil bath.
Differential Lock:
Manual engagement for improved traction.
📐 Dimensions
Exterior
Wheelbase:
Approximately 95 inches (241 cm).
Length:
Approximately 170 inches (432 cm) including hitch.
Width:
Varies with tread width, approximately 80-90 inches (203-229 cm).
Height:
Approximately 75 inches (190 cm) to top of exhaust.
Weights
Curb Weight:
Approximately 11,500 lbs (5,216 kg) with ballast.
Shipping Weight:
Approximately 10,000 lbs (4,536 kg) without ballast.
🛡️ Safety Features
Ratings / Crash Test Information
Crash Test Rating:
N/A - tractor not subject to passenger vehicle crash testing.
Active Features
Braking Safety:
Hydraulic wet disc brakes for reliable stopping.
Engine Shut-off:
Fuel shut-off mechanism for emergency stop.
Passive Features
ROPS:
Roll-over protective structure (cab optional).
Seat Belt:
Provided in or under ROPS cab.
💡 Technology Features
Infotainment
Audio System:
N/A - not applicable for this agricultural vehicle.
Driver Assistance
Hydraulic Draft Control:
Standard with position and draft control.
Power Shift:
Optional power shift transmission for ease of operation.
🔧 Maintenance
Service Intervals
Engine Oil:
Change every 100 hours or annually.
Oil Filter:
Replace with oil change.
Transmission Fluid:
Check daily; change every 1000 hours.
Hydraulic Fluid:
Change every 1000 hours or annually.
Coolant:
Inspect level daily; replace every 1500 hours.
Air Filter:
Service every 10 hours; replace when clogged.
Fluid Specifications
Engine Oil:
SAE 15W-40 diesel engine oil (API CD or higher).
Transmission/Hydraulic:
Allis Chalmers Type 303 hydraulic fluid or equivalent.
Coolant:
Ethylene glycol-based antifreeze with corrosion inhibitors.
Grease:
Multi-purpose lithium grease for fittings.
Known Issues / Common Wear Items
Hydraulic Pump:
May require seal replacement over time.
Engine Injectors:
May become clogged requiring cleaning or replacement.
Power Shift Clutch:
Could wear and require adjustment or overhaul.
Cooling System:
Radiator core may clog with debris; regular cleaning recommended.
📚 Vehicle History
Brand Heritage
Manufacturer:
Allis Chalmers Manufacturing Company, a renowned American agricultural equipment maker.
Origin:
United States (West Allis, Wisconsin).
Model Evolution
Predecessor:
Allis Chalmers D-17.
Successor:
Allis Chalmers D-21 series III (within the D-21 line).
Series II Introduction:
Introduced in 1965 with a more powerful turbocharged engine option.
Production Years:
Series II built from 1965 to 1969.
Production Location
Build Site:
Allis Chalmers plant in West Allis, Wisconsin, USA.
🏆 Awards & Recognition
Recognitions
Ergonomics/Innovation:
Recognized for its high horsepower and advanced features in its class.
Heritage:
Celebrated among tractor enthusiasts as a classic, collectible model.

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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