Manual de Servicio y Reparación del Tractor Allis Chalmers Modelo D-21 Serie II

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Basic Information Identification Make: Allis-Chalmers Model: D-21 Series II Product Type: Workshop Service Repair Manual Introduction Market Position Market Segment: Heavy-duty agricultural tractor for row cropping and general farm work....

Tipo: Agriculture

Proveedor:

SKU: 515281

Etiquetas: Allis Chalmers C Featured Tractors

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Descripción

Basic Information
Identification
Make:	Allis-Chalmers
Model:	D-21 Series II
Product Type:	Workshop Service Repair Manual

Introduction
Market Position
Market Segment:	Heavy-duty agricultural tractor for row cropping and general farm work.
Competitive Analysis
Competitors:	Competed with models from John Deere, IH (International Harvester), Ford, and Massey Ferguson during its production era.
Key Features
Key Features:	Robust construction, powerful diesel engine options, advanced hydraulics for its time, and a comfortable operator station.

Manual Details
Coverage Areas
Coverage:	Complete service and repair for Allis-Chalmers D-21 Series II tractor
Page Count
Page Count:	Not specified in provided information, but typically comprehensive for workshop manuals.
Manual Type
Manual Type:	Service Repair Manual
Language
Language:	English (assumed for this model and market)
Format
Format:	Likely printed paper format; digital formats (PDF) are common for sales.

Manual Coverage
Systems Covered
Engine:	Comprehensive coverage of engine overhaul, tuning, fuel system, lubrication, cooling system, and ignition/starting systems.
Transmission:	Detailed procedures for transmission maintenance, repair, and overhaul, including clutch, gearbox, and final drive assemblies.
Hydraulic System:	In-depth coverage of the tractor's hydraulic system, including pump, cylinders, control valves, and associated lines.
Electrical System:	Information on wiring diagrams, starter, generator/alternator, battery, lighting, and instrumentation.
Steering And Brakes:	Repair and maintenance procedures for the steering mechanism and braking system.
Chassis And Suspension:	Coverage of front axle, rear axle, and frame components.
Front Axle Steering:	Repair and maintenance of the front axle, spindles, kingpins, and steering linkage.
Rear Axle Final Drives:	Overhaul and adjustment of rear axle components and final drives.
Power Takeoff
Pto:	Maintenance and repair of the Power Take-Off (PTO) system.
Procedures Included
Preventive Maintenance:	Detailed service intervals, lubrication charts, and recommended checks.
Troubleshooting:	Diagnostic procedures and troubleshooting guides for common problems.
Overhaul:	Step-by-step instructions for complete engine and major component overhauls.
Adjustments:	Procedures for component adjustments (e.g., valve lash, clutch, brakes).
Disassembly And Reassembly:	Detailed instructions for the disassembly and reassembly of all major tractor systems.
Technical Depth
Depth:	Comprehensive, suitable for professional mechanics and experienced technicians. Covers detailed component specifications, tolerances, and repair procedures.
Diagrams Illustrations:	Extensive exploded views, schematics, and detailed line drawings for component identification and reassembly guidance.
Torque Specifications:	Precise torque values for critical fasteners across all systems are provided.
Measurements Tolerances:	Detailed specifications for measurements, clearances, and wear tolerances for all serviced components.

Manual Specifications
File Format
File Format:	Likely PDF for digital versions, ensuring searchability and ease of access. Printed versions would be bound paper.
Print Quality
Print Quality:	High-quality prints with clear diagrams and legible text are expected for professional manuals.
Binding Type
Binding Type:	Spiral-bound or perfect-bound for printed manuals to allow for flat opening during use.
Paper Type
Paper Type:	Durable paper stock, often with laminated pages for diagrams and frequent use in workshop environments.

Engine Specifications
Primary Engine
Engine Make Model:	Allis-Chalmers 3500 Series Diesel Engine (typical for D-21 Series II)
Engine Type:	Diesel, naturally aspirated or turbocharged (depending on specific configuration)
Displacement:	Approximately 301 cubic inches (4.9 L) for the 3500 series.
Bore X Stroke:	Specific dimensions would be detailed in the manual, e.g., 4.125 in x 4.50 in.
Compression Ratio:	Typically around 16.0:1 to 18.0:1 for diesel engines of this era.
Performance
Horsepower:	Rated horsepower typically in the range of 75-95 PTO horsepower, depending on configuration.
Torque:	Torque figures would be specific to engine tune and configuration, detailed in manual.
Fuel System
Fuel Type:	Diesel Fuel
Injection System:	Direct injection, typically utilizing rotary or inline injection pumps (e.g., Roosa Master or Bosch).
Fuel Filter Part Number:	Part numbers for fuel filters would be critical and found within the manual, e.g., AC-PF272 or equivalent.
Lubrication System
Oil Capacity:	Approximately 10-12 quarts (9.5-11.4 liters) of engine oil. Specifics in manual.
Recommended Oil Viscosity:	SAE 30 or 10W-30 depending on ambient temperature (refer to manual for specific charts).
Oil Filter Part Number:	Similar to fuel filter, e.g., AC-PF272 or equivalent, with exact part number in manual.
Cooling System
Coolant Capacity:	Approximately 20-24 quarts (18.9-22.7 liters) including expansion tank. Specifics in manual.
Coolant Type:	Ethylene glycol-based antifreeze mixture (e.g., 50/50 water and antifreeze).

Transmission
Standard
Transmission Type:	Manual Gearbox, likely with multiple speed ranges (e.g., 8-speed forward, 2-speed reverse, or more complex synchromesh).
Optional
Powershift:	Optional powershift or torque amplifier might be available on some Series II configurations.
Features
Clutch Type:	Dual-stage or independent PTO clutch, typically dry plate.
Differential Lock:	Standard or optional rear differential lock for improved traction.
Fluid Type
Transmission Fluid:	API GL-4 rated gear oil, typically SAE 80W-90 or 85W-140 depending on temperature. Hydraulic fluid may also be shared in some systems. Specifics in manual.
Fluid Capacity
Transmission Fluid Capacity:	Approximately 16-20 quarts (15.1-18.9 liters). Exact capacity found in manual.

Dimensions
Exterior
Wheelbase:	Approximately 92-96 inches (2337-2438 mm). Specific value in manual.
Length:	Varies, typically around 140-150 inches (3556-3810 mm) with standard configuration.
Width:	Varies with rear axle tread settings, typically 70-80 inches (1778-2032 mm).
Weights
Operating Weight:	Approximately 8,000 - 9,500 lbs (3629 - 4309 kg) without ballast. Specific weight in manual.
Max Ballast:	Significant ballast capacity for front and rear tires, detailed in manual.
Tire Sizes
Front Tire Options:	Commonly 7.50-16 or 9.50-15. Specifics in manual.
Rear Tire Options:	Commonly 18.4-34 or 16.9-34. Specifics in manual.

Safety Features
Ratings
Rollover Protection:	ROPS (Roll-Over Protective Structure) installation might have been an option or aftermarket addition. Manual would detail any factory-provided or recommended options.
Active Features
Brakes:	Hydraulically operated wet-disc or dry-disc brakes. Manual details adjustment and service.
Parking Brake:	Mechanical parking brake system.
Passive Features
Operator Station:	Operator station designed for visibility and comfort; seat belts would be an optional safety feature.

Technology Features
Infotainment
Infotainment System:	N/A for this era of agricultural tractor. Focus is on functional mechanical and hydraulic systems.
Driver Assistance
Driver Assistance Features:	N/A. Operator comfort features would be basic for the time.
Connectivity
Connectivity:	N/A. No electronic connectivity features present.

Maintenance
Service Intervals
Engine Oil Change:	Typically every 100-200 operating hours, or annually. Manual will provide precise schedule.
Hydraulic Fluid Change:	Typically every 500-1000 operating hours. Manual will specify.
Air Filter Cleaning Replacement:	As needed based on operating conditions, with specific recommendations in the manual.
Fluid Specifications
Hydraulic Fluid:	Allis-Chalmers THF (Tractor Hydraulic Fluid) or equivalent universal tractor hydraulic fluid meeting specified viscosity and performance standards. Consult manual for exact specification.
Transmission Fluid:	API GL-4 rated gear oil, SAE 80W-90 or 85W-140. Specific details in manual.
Known Issues
Common Wear Points:	Potential wear on clutch, PTO engagement collar, hydraulic pump and seals, and front axle kingpins.
Engine Reliability:	Generally robust engines, but may require valve adjustments, injector servicing, and potential head gasket repairs with age.
Maintenance Tips
Preventive Measures:	Regular cleaning of radiators and air intake, proper greasing of pivot points, and checking fluid levels are critical for longevity.

Vehicle History
Brand Heritage
Brand History:	Allis-Chalmers was a major American manufacturer of agricultural machinery, known for innovation and durable equipment.
Model Evolution
D Series Evolution:	The D-21 was part of Allis-Chalmers' line of large utility and row-crop tractors, evolving from earlier models with increased power and features.
Production
Production Years:	The D-21 Series II was produced in the mid-to-late 1960s.
Manufacturing Location:	Primarily manufactured in the United States by Allis-Chalmers.

Awards & Recognition
Recognitions
Industry Awards:	Specific awards for the D-21 Series II are not commonly documented, but Allis-Chalmers tractors were generally well-regarded for their engineering and durability in their era.