McCormick Farmall MD MDV Tractor Operator's Manual
Farmall MD and MDV operator's manual detailing maintenance, operation, and special equipment for tractors built in 1939. Includes diagrams and specifications
McCormick Models Covered & Key Technical Specifications
Models: Farmall MD, Farmall MDV
Sub-models / Variants: Pneumatic tires, Steel wheels, Electric starting and lighting equipment, Belt pulley, Power take-off, Hydraulic lift-all, Adjustable wide front axle
Trade Names: McCormick, International Harvester
Model Years: 1939
Technical Data:
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Engine: Diesel type, 4-cylinder, 1450 RPM rated governed speed
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Clutch: 11-inch diameter, single-plate, dry disc
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Transmission: 5 forward speeds, 1 reverse speed
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Cooling system capacity: 6-3/4 U.S. gallons
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Fuel tank capacity: Approx. 20-1/2 U.S. gallons
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Engine oil capacity: 9 U.S. quarts
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Transmission oil capacity: 13 U.S. gallons
McCormick Manual Features & Content Preview
1939 McCormick Farmall MD and MDV Operator's Manual
- Covers the 1939 McCormick Farmall MD and MDV tractors, documenting operation, lubrication, and routine maintenance for both standard and variant-equipped units
- Contains 47 detailed illustrations covering controls, lubrication points, adjustment procedures, and special equipment installation
- File delivered as a direct download the moment payment clears
- Stored against your account so you can retrieve it after a hard-drive loss
- 83-page PDF document
- OCR text layer lets you jump to a torque spec by keyword
- This reprint remains the primary documentation for identifying original Farmall MD and MDV serial number prefixes and factory-specified lubrication intervals
Operational and Maintenance Coverage
This publication explains the routine adjustments and maintenance requirements necessary for the efficient operation of the Farmall MD and Farmall MDV tractors. The document details the unique Diesel starting cycle, which transitions from a gasoline-powered gasoline cycle to Diesel operation via a compression release mechanism. Chapters provide descriptive guidance on the daily preparation of the tractor, including fuel system filling, cooling system inspections, and the importance of venting the injection system. Maintenance topics include the lubrication charts for the engine and chassis, the cleaning of fuel strainers, the servicing of air cleaners, and the adjustment of the drawbar, brakes, and clutch.
Technical Specification Preview
Engine identification and system settings are documented throughout the text. The operator's manual lists the governed full-load speed of the engine at 1450 RPM. Fluid capacities are explicitly stated; the transmission and differential case require 13 U.S. gallons, while the engine crankcase pan holds 9 U.S. quarts. Engine valve clearance is specified at 0.017 inches when the engine is warm. Specific fuel oil requirements, including gravity and viscosity grades for varying temperature ranges, are listed in a dedicated specifications table. Reference values for spark plug gaps (0.020 to 0.025 inches) are provided for starting system maintenance. This 83-page manual serves as the factory-authorized reference for 1939 Farmall MD and MDV owners, documenting all engine, chassis, and electrical system specifications required for operating the tractor as intended.
Document Reference: Original OEM
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