Target User:
Owners, operators, and service technicians of Allis-Chalmers D-17 and D-17 Series III tractors.
Value Proposition:
Provides essential, detailed technical information to maintain, diagnose, and repair the Allis-Chalmers D-17 Series III, enabling owners to perform their own maintenance and repairs, saving on labor costs and downtime.
Manual Benefit:
Offers direct access to factory-approved repair procedures and specifications, ensuring correct and efficient maintenance.
Systems Covered:
Engine, Fuel System, Cooling System, Ignition System, Clutch, Transmission, Power Director (if applicable), Rear Axle and Final Drive, Power Take-Off (PTO), Hydraulic System, Steering System, Front Axle, Brakes, Electrical System, Chassis, Mounting Brackets, Sheet Metal, Decal Placement
Estimated Page Count:
300-500 (typical for comprehensive service manuals of this era, specific count not provided in source)
Manual Type:
Service and Repair Manual
Engine Details:
Detailed disassembly, assembly, inspection, testing, and overhaul procedures for all engine components, including cylinder head, pistons, connecting rods, crankshaft, camshaft, valve train, lubrication system, and cooling system.
Transmission And Drivetrain:
Comprehensive coverage of transmission disassembly, inspection, repair, and reassembly, including gears, shafts, bearings, synchromesh mechanisms (if applicable), clutch operation, and final drive assembly. PTO (Power Take-Off) operation and maintenance are also detailed.
Hydraulic System:
In-depth information on the tractor's hydraulic system, including pump testing and repair, cylinder overhaul, valve body inspection and adjustment, and troubleshooting common hydraulic performance issues.
Electrical System:
Schematic diagrams, wiring harness information, component testing procedures for generator/alternator, starter motor, ignition system, lighting, and instrumentation.
Routine Maintenance:
Detailed instructions for oil changes, filter replacements, lubrication points, coolant checks, and general inspection routines.
Troubleshooting:
Systematic diagnostic charts and procedures to identify and resolve common operational problems across all major tractor systems.
Repair And Overhaul:
Step-by-step instructions for component removal, disassembly, cleaning, inspection, machining, repair, reassembly, and installation.
Diagnostic Capabilities:
Advanced diagnostic procedures, including torque specifications, clearances, pressure tests, and electrical resistance checks for accurate fault finding and component adjustment.
Rebuild Procedures:
Comprehensive guidance for complete engine rebuilds, transmission overhauls, and hydraulic system restoration, often including machining tolerances and specific rebuild kits.
Engine Model:
Various gasoline and diesel options depending on specific D-17 model year, commonly including the Allis-Chalmers D-176 (gasoline) and D-173 (diesel) engines.
Engine Type:
4-cylinder, overhead valve, naturally aspirated
Gasoline Horsepower Estimated:
Approx. 53 PTO HP (varies by fuel and tuning)
Diesel Horsepower Estimated:
Approx. 54 PTO HP (varies by fuel and tuning)
Carburetor Gasoline:
Marvel-Schebler or Zenith (specific model varies)
Injection System Diesel:
Roosamaster, CAV, or similar (specific model varies)
Transmission Type:
Allis-Chalmers constant mesh gear transmission
Number Of Gears:
8 forward, 4 reverse (standard)
Power Director:
Optional (a 2-speed transmission splitter controlled by a lever, effectively doubling gear ratios).
Clutch Type:
Dual-stage dry clutch (one for PTO, one for transmission/drive)
Safety Features Included In Manual:
Procedures for ensuring safety during maintenance, including lockout/tagout, proper handling of fluids, and safe operation of hydraulics and PTO. (Note: Modern safety ratings like NHTSA are not applicable to this era of tractor).
Operator Safety Considerations:
Guidance on safe operation of the tractor, including proper use of controls, awareness of the power take-off (PTO) shaft, and safe attachment of implements.
Instrumentation:
Basic dashboard with fuel gauge, temperature gauge, ammeter, and oil pressure indicator. Hour meter common.
Powertrain Features:
Power Director (optional) for on-the-go shifting, Power Steering (often optional) for reduced steering effort.
Electrical System Voltage:
Typically 12-volt negative ground system.
Engine Oil Change:
Every 50 hours of operation or annually (depending on operating conditions, refer to manual for specifics).
Transmission Hydraulic Fluid Change:
Every 500 hours of operation or annually (refer to manual for specific fluid types and capacities).
Air Cleaner Service:
Inspect daily, clean or replace as needed based on operating environment.
Engine Oil Specification:
API Service Classification CD or SE (e.g., SAE 30W or 10W-30 depending on temperature, consult manual).
Hydraulic Fluid Specification:
Allis-Chalmers Hy-Tran or equivalent UTF (Universal Tractor Transmission) fluid. Capacity approx. 8-10 gallons (30-38 liters).
Coolant Specification:
50/50 mix of permanent antifreeze and clean water.
Common Wear Points:
Steering components, clutch wear, hydraulic pump efficiency, PTO spline wear, potential gasket leaks due to age.
Series Specific Notes:
Series III typically featured improvements over earlier models, but common maintenance items remain consistent.
