Target Audience:
Owners, operators, mechanics, and restoration specialists of the Allis-Chalmers D-15 Series II tractor.
Value Proposition:
Provides essential technical information for maintaining, repairing, and troubleshooting the D-15 Series II, crucial for preserving its operational value and historical significance.
Manual Advantage:
Comprehensive coverage of all major mechanical and hydraulic systems, detailed troubleshooting guides, and precise torque specifications.
Systems Covered:
Engine, Fuel System, Cooling System, Electrical System, Clutch, Transmission, Differential, Final Drives, Steering, Brakes, Hydraulics (Power Director, PTO, 3-Point Hitch), Front and Rear Axles, Chassis, Sheet Metal, Troubleshooting, Torque Specifications, Schematics.
Estimated Pages:
Approximately 300-400 pages (typical for WSM of this era and scope).
Type:
Workshop Service Manual (WSM)
Format:
Digital (likely PDF, as indicated by 'i......' likely referring to 'information'). Assumed printable.
Engine Mechanics:
Detailed disassembly, assembly, inspection, and repair procedures for the entire engine. Includes piston, ring, rod, crankshaft, camshaft, cylinder head, valve train, and block servicing.
Fuel System Repair:
Carburetor overhaul and adjustment, fuel pump servicing, fuel filter replacement, fuel line maintenance.
Cooling System Maintenance:
Radiator, fan, water pump, thermostat, and coolant specifications and service.
Electrical System Diagnostics:
Starter, generator/alternator, battery, ignition system (distributor, coil, spark plugs), lighting, wiring diagrams, and troubleshooting electrical faults.
Drivetrain Repair:
Clutch adjustment and replacement, transmission disassembly and overhaul (including Power Director engagement), differential maintenance, and final drive servicing.
Steering And Brakes:
Front axle steering linkage, steering gearbox overhaul, brake system inspection, adjustment, and component replacement (shoe, drum, linkage).
Hydraulic System Service:
Operation and repair of the hydraulic pump, reservoir, control valves, Power Director transmission assist, PTO engagement, and 3-Point Hitch system adjustments and rebuilds.
Maintenance Procedures:
Scheduled maintenance tasks, lubrication points, fluid level checks, filter changes, tune-up procedures, and pre-operation checks.
Troubleshooting Guide:
Systematic diagnostic steps for common problems across all major tractor systems, helping identify root causes.
Component Rebuilds:
Detailed, step-by-step instructions for the complete overhaul of major components like engines, transmissions, hydraulic pumps, and steering units.
Adjustment Procedures:
Accurate procedures for adjusting clutch pedal, brake linkage, governor, PTO engagement, and hydraulic controls.
Depth:
Comprehensive, covering from basic user maintenance to advanced component disassembly, rebuilding, and diagnostics. Suitable for professional mechanics and skilled DIY users.
Engine Model:
Allis-Chalmers 200-ci (3.3L) four-cylinder, gasoline or LP fuel options.
Bore X Stroke:
3.75 in. x 4.5 in. (95.25 mm x 114.3 mm)
Compression Ratio:
Gasoline: 7.0:1; LP: 7.5:1 (typical)
Rated Engine Speed:
2000 RPM (typical)
Carburetor:
Marvel-Schebler (specific model varies by fuel type, e.g., TSX for gasoline).
Fuel Type:
Gasoline or LP Gas (LPG)
Oil Capacity:
6 US quarts (5.7 L) with filter.
Recommended Oil Viscosity:
SAE 10W-30 or 10W-40 depending on ambient temperature (refer to manual for specific chart).
Gearbox:
6-speed constant mesh manual transmission.
Power Director:
Yes, a 2-speed power shift transmission (often called 'Power Director') providing 12 forward and 3 reverse gears (6 in main box x 2 in Power Director).
Clutch:
Dry, single-plate clutch with heavy-duty construction for tractor applications.
Transmission Oil Type:
API GL-4 rated, SAE 80W-90 or SAE 90 gear oil. (Specific Allis-Chalmers specification may apply, e.g., AC Tracto-Lift Oil or equivalent).
Transmission Oil Capacity:
Approximately 20-25 US quarts (18.9-23.7 L), depending on Power Director inclusion.
Wheelbase:
Approximately 80.5 inches (2045 mm)
Length:
Approximately 132 inches (3353 mm)
Width:
Approximately 67 inches (1702 mm) at rear tread
Operating Weight:
Approximately 4,700 lbs (2132 kg) (Varies with configuration).
Drawbar Horsepower:
Around 35-40 HP (This is an estimate; manual will provide precise figures).
Engine Oil Change:
Every 50-75 operating hours or annually (typical for this era).
Air Filter Service:
Inspect frequently, clean or replace as needed based on operating conditions (e.g., every 100-150 hours).
Fuel Filter Replacement:
Every 200-300 operating hours or as needed.
Transmission Oil Change:
Every 500-750 operating hours or annually.
Hydraulic Fluid:
Allis-Chalmers HD-200 (or equivalent Type 'A' Automatic Transmission Fluid if specified by AC for specific systems, check manual for clarity). Capacity: approximately 15-20 US quarts (14.2-18.9 L) for main hydraulic reservoir.
Coolant Type:
Ethylene Glycol based antifreeze mixture, typically 50/50 with distilled water. Check manual for specific mixture ratios and freeze protection levels.
Common Wear Items:
Clutch wear, seal leaks (engine, transmission, hydraulics), brake adjustment and lining wear, potential carburetor flooding or vacuum leaks, PTO clutch engagement issues.
Electrical Challenges:
Aging wiring harnesses, corroded electrical connections, starter and generator/alternator reliability issues, voltage regulator problems.
Spark Plug Gap:
0.025 - 0.030 inches (0.635 - 0.762 mm) (For gasoline engine, specific plug type required).
Ignition Timing:
Refer to manual for BTDC (Before Top Dead Center) specification, often around 5-8 degrees BTDC for gasoline engines.
Valve Lash:
Intake: 0.015 in. (0.38 mm); Exhaust: 0.018 in. (0.46 mm) (Hot adjustment, verify with manual).
Brand Legacy:
Allis-Chalmers was a major American manufacturer of agricultural, construction, and industrial machinery, known for innovation and robust engineering, including the distinctive 'Persian Orange' paint scheme.
D15 Series Ii Introduction:
The D-15 Series II was an evolution of the earlier D-15 model, featuring improvements in engine, transmission (especially the optional Power Director), and overall operator comfort. It was produced from 1960 to 1965.
Production Period:
1960-1965
Manufacturing Location:
Galesburg, Illinois, USA
