| Manufacturer |
McCormick-Deering |
| Price |
- |
| Model |
WD-6 |
| Equipment Type |
Standard-Tread Tractors |
| Factory |
Rock Island, Illinois, USA |
VARIANTS
NEBRASKA TRACTOR TEST 356 2
| Description |
Diesel 5-speed 2WD September 20 - 27, 1940 Link: Nebraska Tractor Test 356 file Drawbar performance Gear 3 used for power test. Gear 1 used for pull test |
| Belt power (max) |
34.75hp / 25.9kW |
| Belt fuel use (max) |
2.3gal/hour / 8.7l/hour |
| Max power |
31.02hp / 23.1kW |
| Max pull |
4806lbs / 2180kg |
MCCORMICK-DEERING WD-6 POWER
| Drawbar (claimed) |
31.4hp / 23.4kW |
| Belt (claimed) |
36.4hp / 27.1kW |
| Drawbar (tested) |
31.02hp / 23.1kW |
| Belt (tested) |
34.75hp / 25.9kW |
ENGINE DETAIL
The McCormick-Deering WD-6 features a robust 4-cylinder diesel engine with a 14.2:1 compression ratio, enhancing torque output at the rated 1450 RPM, making it suitable for heavy-duty agricultural tasks. The liquid-cooled system with a 27-quart coolant capacity ensures efficient engine temperature management during prolonged operations. However, the engine's firing order of 1-3-4-2 may lead to unique maintenance requirements in service conditions, demanding attention to injector and fuel pump alignment.
| Description |
International Harvester diesel 4-cylinder liquid-cooled vertical I-head |
| Displacement |
247.7ci / 4.1L |
| Bore/Stroke |
3.875x5.25inches / 98x 133 mm |
| Compression |
14.2:1 |
| Rated RPM |
1450 |
| Firing order |
1-3-4-2 |
| Coolant capacity |
27qts / 25.6L |
MCCORMICK-DEERING WD-6 ENGINE
The McCormick-Deering WD-6 is powered by a robust International Harvester 4.1L 4-cylinder diesel engine, providing reliable torque for heavy-duty applications. With a fuel tank capacity of 21 gallons (79.5L) and an auxiliary fuel tank of 0.88 gallons (3.3L), this tractor is well-equipped for extended operation periods in agricultural and industrial tasks. However, the relatively small auxiliary fuel capacity may require frequent refueling during prolonged use, potentially limiting operational efficiency in remote locations.
| Description |
International Harvester 4.1L 4-cyl diesel |
| Fuel tank |
21gal / 79.5L |
| Aux. fuel |
0.88gal / 3.3L |
TRANSMISSION
The McCormick-Deering WD-6 features a 5-speed forward and 1-speed reverse gear configuration, allowing for versatile speed adjustments and enhanced maneuverability in various field conditions. Its mechanical dry disc clutch, measuring 279.4 mm, ensures reliable power transmission but may require more frequent adjustment and maintenance compared to hydraulic systems. Ideal for medium-duty tasks, this tractor offers a balance of power and control, suitable for small to mid-sized farms.
| Type |
gear |
| Gears |
5 forward and 1 reverse |
| Clutch |
279.4mm mechanical dry disc |
MECHANICAL
The McCormick-Deering WD-6 features a 4x2 2WD chassis, which offers simplicity but may struggle in uneven terrain or muddy conditions compared to 4WD models. Its manual steering can provide precise control, but it may cause fatigue over extended periods of operation. With a 5-speed gear transmission, this tractor allows for versatile speed management, making it suitable for varied tasks such as plowing or transport, albeit with limited torque options in low gear settings.
| Chassis |
4x2 2WD |
| Steering |
manual |
| Cab |
Open operator station. |
| Transmission |
5-speed gear |
POWER TAKE-OFF (PTO)
| Rear PTO |
transmission |
| Rear RPM |
540 |
MCCORMICK-DEERING WD-6 TIRES
The McCormick-Deering WD-6 tractor is equipped with a versatile tire configuration, featuring 6.50x16 agricultural front tires and 13.5x24 rear tires. This combination offers balanced traction and stability, making it suitable for various farming tasks, including tillage and haulage. However, the tire sizes may limit performance in deep mud or loose soil conditions, requiring careful maneuvering in such environments.
| Ag front |
6.50x16 |
| Ag rear |
13.5x24 |
DIMENSIONS
| Wheelbase |
76inches / 193cm |
| Length |
124.4inches / 315cm |
| Width |
63inches / 160cm |
| Height |
90inches / 228cm |
| Height (hood) |
59inches / 149cm |
| Shiping weight |
4350lbs / 1973kg |
| Front tread |
46.75inches / 118cm |
| Rear tread |
53inches / 134cm |
DIMENSIONS & TIRES
The McCormick-Deering WD-6's 76-inch wheelbase provides enhanced stability and maneuverability, particularly beneficial for farm operations in tight fields. Weighing 4,350 lbs, it offers substantial traction, ideal for heavy tillage or plowing tasks; however, the weight may present challenges in soft or muddy conditions. The combination of 22.50-4 front tires and large 42-10 rear tires indicates a design optimized for power delivery and load distribution, crucial for efficient operation in various agricultural scenarios.
| Wheelbase |
76inches / 193cm |
| Weight |
4350lbs / 1973kg |
| Front tire |
22.50-4 |
| Rear tire |
42-10 |
WD-6 SERIAL NUMBERS
| Location |
Serial number plate located on the clutch housing. |
| 1940 |
WDBK 516 |
| 1941 |
WDBK 1225 |
| 1942 |
WDBK 3718 |
| 1944 |
WDBK 6371 |
| 1945 |
WDBK 9509 |
| 1946 |
WDBK 14019 |
| 1947 |
WDBK 16811 |
| 1948 |
WDBK 24020 |
| 1949 |
WDBK 28906 |
| 1950 |
WDBK 35566 |
| 1951 |
WDBK 39443 |
| 1952 |
WDBK 45175 |
BELT PULLEY
| Diameter |
11inches / 27cm |
| Width |
7.5inches / 19cm |
| RPM |
899 |
| Speed |
2588ft/min / 788.82 meters/min |
