Category:
Agricultural Tractor
Competitors:
Competed with tractors from John Deere, Ford, Farmall (International Harvester), and Massey Ferguson in its class.
Design Philosophy:
Known for its robust construction, reliable performance, and versatility for farm and utility tasks.
Operator Comfort:
Featured an open operator station with a comfortable seating arrangement, and accessible controls for its era.
Power Takeoff:
Equipped with a standard PTO for operating various agricultural implements.
Hydraulic Lift:
Integrated hydraulic lift system for operating three-point hitch implements.
Engine:
Detailed information on engine overhaul, tuning, component identification, troubleshooting, and specifications for gasoline and diesel variants (if applicable).
Fuel System:
Carburetor adjustment and overhaul, fuel pump operation, fuel filter replacement, fuel line routing, and troubleshooting.
Cooling System:
Radiator, thermostat, water pump, fan, hoses, and coolant specifications. Overheating diagnosis and repair procedures.
Ignition System:
Spark plugs, ignition coil, distributor, timing adjustment, and troubleshooting of ignition system faults.
Transmission:
Clutch operation, gearbox overhaul, gear shifting mechanisms, lubrication, and troubleshooting for manual transmissions.
Drive Axle:
Rear axle assembly, differential, gears, lubrication, and maintenance procedures.
Hydraulic System:
Hydraulic pump, control valve, lift arms, cylinders, fluid specifications, and troubleshooting for implement hydraulics.
Steering System:
Steering gearbox, tie rods, linkages, lubrication, and adjustments for precise steering control.
Braking System:
Brake shoe adjustment, drum brake service, brake pedal, linkage, and troubleshooting for reliable stopping power.
Electrical System:
Wiring diagrams, generator/alternator, battery, starter motor, lighting system, and troubleshooting electrical faults.
Chassis And Frame:
Frame inspection, component mounting, and general chassis maintenance.
Bodywork:
Fender maintenance, operator platform, sheet metal repairs, and related component servicing.
Maintenance:
Routine maintenance checks, lubrication points, filter replacement, and fluid level checks with recommended intervals.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common operational problems across all major systems.
Repair:
Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation.
Overhaul:
Complete engine, transmission, and hydraulic system overhaul procedures, including detailed torque specifications and clearances.
Adjustment:
Precise adjustment procedures for clutch, brakes, ignition timing, carburetor, and hydraulic controls.
Specifications:
Comprehensive torque values, clearances, fluid capacities, pressure readings, and performance specifications.
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, essential for professional mechanics and experienced owners.
Model:
Allis Chalmers 175 XD (Diesel)
Configuration:
Inline 3-cylinder, naturally aspirated diesel
Displacement:
Approximately 160 cubic inches (2.6 Liters)
Bore X Stroke:
Specifics available in manual (typical for this era: around 3.875" x 4.375")
Horsepower Rated:
Approximately 35-45 PTO horsepower (varies by specific configuration and source)
Torque Peak:
Specifics available in manual
Governor:
Mechanical governor for precise engine speed control.
Injection System:
Roos or Bosch injection pump (depending on specific engine build)
Fuel Capacity:
Refer to operator's manual or specific manual chapter (typically 10-15 gallons)
Length:
Refer to specific manual chapter for exact dimensions (typically around 100-120 inches)
Width:
Refer to specific manual chapter for exact dimensions (variable based on tire size, typically 60-70 inches)
Wheelbase:
Refer to specific manual chapter for exact dimensions (typically around 70-80 inches)
Operating Weight:
Approximately 3,500 - 4,500 lbs (refer to specific manual for exact weight)
Front Axle Weight:
Specifics available in manual
Rear Axle Weight:
Specifics available in manual
Engine Oil Change:
Typically every 100-200 operating hours or annually. Refer to manual for exact interval and oil specification.
Oil Filter Change:
Change with every engine oil change.
Air Filter Cleaning:
Check and clean at frequent intervals, especially in dusty conditions; replace as needed.
Fuel Filter Replacement:
As per manual recommendations, typically every 250-500 hours or when issues arise.
Transmission Fluid Change:
Refer to manual for specific interval and fluid type, often at higher hour intervals.
Hydraulic Fluid Change:
Refer to manual for specific interval and fluid type, often annually or every 500-1000 hours.
Engine Oil:
Refer to manual for SAE viscosity grade (e.g., SAE 30 or SAE 10W-30 depending on climate) and API service classification. Diesel specific oil is recommended.
Coolant:
Ethylene glycol based antifreeze and water mixture (50/50 recommended). Specific anti-corrosion additives may be required; consult manual.
Transmission Hydraulic Fluid:
Typically a specific tractor hydraulic fluid (THF) or equivalent meeting manufacturer specifications. Manual will specify grade and part numbers if available.
Engine Wear:
Typical wear on valve seats, piston rings, and bearings in high-hour engines. Potential for injector pump wear.
Hydraulic Leaks:
Common leaks from seals in the hydraulic pump, control valve, and cylinders due to age and usage.
Clutch Slippage:
Clutch disc wear can lead to slippage, requiring adjustment or replacement.
Electrical Oxidation:
Corrosion and oxidation on electrical connections, switch contacts, and wiring loom can cause intermittent faults.
Carburetor Issues:
For gasoline variants, gummy deposits in carburetors and fuel lines are common with long-term storage.
Company Origin:
Allis-Chalmers was an American manufacturer of machinery and equipment, renowned for its agricultural and industrial products.
Development:
The D-12 was part of Allis-Chalmers' popular 'D' series of tractors, designed to meet the evolving needs of small to medium-sized farms.
Series Iii Updates:
Series III likely introduced refinements in engine performance, transmission, and potentially hydraulic system improvements over earlier D-12 models.
Production Years:
D-12 production spanned from the late 1950s into the 1960s. Series III would be towards the latter end of this range.
Manufacturing Location:
Primarily manufactured in the United States.
