Tractor Segment:
Heavy-duty agricultural tractor, positioned for demanding farm operations. The 'XT' designation often implied enhanced features or power.
Competitors:
Competed against similar-class tractors from manufacturers like John Deere, International Harvester (IH), Massey Ferguson, and Ford.
Engine Power:
Known for robust diesel engines, providing significant drawbar pull and PTO horsepower.
Durability:
Designed for longevity and heavy-duty use in agricultural environments.
Versatility:
Configurable for a wide range of farming tasks with various implements and PTO options.
Primary Coverage:
Repair and service of the Allis-Chalmers Tractor Model 190XT
Secondary Coverage:
Troubleshooting, maintenance schedules, wiring diagrams
Estimated Page Count:
Varies by specific publication, but factory service manuals of this era typically range from 500-1500 pages.
Type:
Factory Service Repair Manual / Workshop Manual
Engine:
Detailed breakdown, overhaul procedures, fuel system, cooling system, lubrication system, ignition (if applicable to diesel), exhaust.
Transmission:
Clutch, gearbox, power take-off (PTO), differential, final drives, lubrication, repair procedures.
Hydraulics:
Hydraulic pump, control valves, cylinders, hoses, filters, fluid specifications, troubleshooting, maintenance, repair.
Electrical:
Starter, alternator/generator, battery, lighting, instrumentation, wiring diagrams for all circuits.
Chassis And Steering:
Front axle, rear axle, steering system (mechanical/power assisted), suspension components, wheel bearings.
Brakes:
Brake system components, hydraulic lines, master cylinder, brake shoes/discs, adjustments, repair.
Operator Station:
Controls, seat, platform, guarding, instrumentation, cab (if equipped).
Routine Maintenance:
Lubrication points and schedules, fluid level checks, filter replacements, safety checks.
Troubleshooting:
System-by-system diagnostic charts, symptom identification, corrective actions.
Repair And Overhaul:
Detailed disassembly, cleaning, inspection, repair, reassembly, and adjustment procedures for all major components and systems.
Component Rebuild:
Specific instructions for rebuilding engines, transmissions, hydraulic pumps, cylinders, and other key assemblies.
Specifications And Tolerances:
Torque values, clearances, pressures, fluid capacities, and critical dimensions for proper assembly and operation.
Wiring Diagrams:
Comprehensive electrical schematics for all tractor systems, aiding in electrical diagnostics and repairs.
Depth:
Comprehensive factory-level detail, suitable for professional mechanics and experienced DIY technicians. Covers everything from routine maintenance to complete engine and transmission rebuilds.
Compatibility:
Compatible with all versions of Windows and Mac operating systems.
Required Software:
Adobe PDF Reader, WinZip (for potential archive extraction)
Printability:
Designed for clear printing, allowing users to print specific sections or the entire manual.
Binding:
Not applicable (digital format)
Paper Type:
Not applicable (digital format)
Engine Manufacturer:
Allis-Chalmers (often utilizing their own diesel engines or those from reputable suppliers like Waukesha or Perkins for specific models).
Displacement:
Typically in the range of 350-430 cubic inches (5.7L - 7.0L), but specific variants may differ. For the 190XT, a common engine was the Allis-Chalmers 320 cu in (5.2L) 4-cylinder or a 370 cu in (6.0L) 6-cylinder.
Bore X Stroke:
Specific to engine variant, e.g., for the 320: 4.25 x 4.5 inches.
Rated Hp:
Drawbar horsepower typically ranged from 70-85 HP, with PTO horsepower often around 80-90 HP. Specific engine configuration dictates exact figures.
Peak Torque:
Estimated around 200-240 lb-ft, depending on engine variant and RPM.
Injection System:
Direct injection, typically with Bosch or similar quality injection pumps and injectors.
Fuel Filter:
Spin-on or cartridge type diesel fuel filters, often with a water separator.
Transmission Type:
Constant mesh manual transmission with multiple forward and reverse gears.
Gear Count:
Commonly offered with 8 forward and 2 reverse gears or 10 forward and 2 reverse gears (e.g., with a hi-lo range selector).
Power Shift Option:
Some variants of the 190XT might have been equipped with a partial power shift or a 'Power Director' clutch for on-the-go shifting of certain gears.
Pto:
Standard rear Power Take-Off (PTO), typically 540 RPM and 1000 RPM selectable or fixed depending on configuration.
Differential Lock:
Mechanical differential lock for enhanced traction.
Clutch:
Dry single or dual-stage clutch for transmission and PTO engagement.
Wheelbase:
Approx. 88-92 inches (2235-2337 mm), varies by tire size and configuration.
Overall Length:
Approx. 140-155 inches (3556-3937 mm) without implements.
Overall Width:
Approx. 70-80 inches (1778-2032 mm) depending on rear tire size.
Height To Top Of Exhaust:
Approx. 90-100 inches (2286-2540 mm).
Operating Weight:
Approx. 8,500 - 10,000 lbs (3855 - 4536 kg), depending on configuration and ballast.
Front Axle Capacity:
Designed to handle significant front-end loader weight and implement loads.
Rear Axle Capacity:
Robust design to support heavy draft loads and implement weight.
Rollover Protection:
ROPS (Roll Over Protective Structure) may have been an optional or aftermarket addition for later models or specific regions. Original factory manuals would detail any integrated safety features.
Brake Systems:
Rear wheel mechanical drum or disc brakes, often with a parking brake function.
Safety Shutoffs:
PTO safety shutoff (if equipped with relevant guards), clutch safety switches on some later models.
Operator Station Design:
Ergonomically placed controls, anti-slip platform, and guards for moving parts.
Engine Oil Change:
Typically every 250-400 operating hours or annually. Specific interval in manual.
Oil Filter Change:
Concurrent with engine oil change.
Fuel Filter Change:
Every 250-500 operating hours or when issues arise, check manual for specific recommendation.
Transmission Hydraulic Fluid Change:
Every 1000-1200 operating hours. Manual will specify exact interval and fluid type.
Engine Oil:
API CD or CE classification diesel engine oil, SAE 15W-40 or 10W-30 depending on ambient temperature. Consult manual for precise API service category and viscosity grade.
Hydraulic Fluid:
Allis-Chalmers 'Hy-Gard' or equivalent premium tractor hydraulic fluid (often a universal tractor transmission fluid - UTF). Manual will specify exact part number and specifications.
Transmission Fluid:
Typically shares the same hydraulic fluid as the main hydraulic system. Verify in manual.
Coolant:
Ethylene glycol based antifreeze/coolant, typically 50/50 mix with distilled water. Manual will specify type and capacity.
Common Wear Items:
Clutch wear, hydraulic pump performance degradation over time, front end steering linkage wear, electrical wiring issues (corrosion, breaks).
Engine Specific Issues:
Potential for injector pump or injector wear, gasket leaks (e.g., head gasket, oil pan), glow plug reliability if cold-weather starting is problematic.
Transmission Issues:
Gear grinding or difficulty shifting can indicate worn synchros or clutch issues. PTO clutch engagement problems.
Manufacturer History:
Allis-Chalmers was a prominent American manufacturer of farm machinery and industrial equipment, known for innovation and quality from the early 20th century until its acquisition by K-Tec in 1985 and subsequent asset sales.
190Xt Placement:
The 190XT was a key model in Allis-Chalmers' tractor lineup during the 1970s, succeeding earlier models and offering improved power, features, and comfort. It was part of a generation that saw increased emphasis on operator comfort and productivity.
Predecessors:
Models like the D19, 190, and 190XT formed a series of powerful row-crop tractors.
Production Period:
Mid to late 1970s (approximately 1974-1977/1978).
Manufacturing Location:
Primarily manufactured in the United States by Allis-Chalmers.
