| Manufacturer |
McCormick-Deering |
| Price |
- |
| Model |
WD-9 |
| Equipment Type |
Standard-Tread Tractors |
| Factory |
Milwaukee, Wisconsin, USA |
VARIANTS
NEBRASKA TRACTOR TEST 370
| Description |
Diesel 2WD May 21 - June 18, 1941 Link: Nebraska Tractor Test 370 file Drawbar performance |
| Belt power (max) |
46.43hp / 34.6kW |
| Belt fuel use (max) |
3.2gal/hour / 12.1l/hour |
| Max power |
42.57hp / 31.7kW |
| Max pull |
6,367lbs / 2888kg |
MCCORMICK-DEERING WD-9 POWER
| Drawbar (claimed) |
33hp / 24.6kW |
| Belt (claimed) |
42hp / 31.3kW |
| Drawbar (tested) |
42.57hp / 31.7kW |
| Belt (tested) |
46.43hp / 34.6kW |
ENGINE DETAIL
The McCormick-Deering WD-9 features a robust 334.5 ci (5.5L) diesel engine with a high compression ratio of 15.7:1, optimized for efficient power delivery at a rated RPM of 1500, making it suitable for heavy-duty agricultural tasks. The vertical I-head design simplifies maintenance but can pose challenges in cold starting due to its high compression. With a coolant capacity of 44 quarts, it offers effective thermal management, essential for prolonged operation in demanding conditions.
| Description |
International Harvester diesel 4-cylinder liquid-cooled vertical I-head |
| Displacement |
334.5ci / 5.5L |
| Bore/Stroke |
4.40x5.50inches / 112x 140mm |
| Compression |
15.7:1 |
| Rated RPM |
1500 |
| Coolant capacity |
44qts / 41.6L |
MCCORMICK-DEERING WD-9 ENGINE
The McCormick-Deering WD-9 tractor features a robust International Harvester 5.5L 4-cylinder diesel engine, delivering reliable torque and fuel efficiency ideal for medium-duty farming tasks. Its large 36-gallon fuel tank offers extended operational periods, though the auxiliary fuel tank of 0.88 gallons may require careful monitoring to prevent interruptions during prolonged use. Suitable for diverse applications, this tractor excels in tasks such as plowing and tillage, yet may face challenges in power delivery during heavy load conditions due to its vintage design.
| Description |
International Harvester 5.5L 4-cyl diesel |
| Fuel tank |
36gal / 136.3L |
| Aux. fuel |
0.88gal / 3.3L |
TRANSMISSION
The McCormick-Deering WD-9 features a 5-speed forward and 1-speed reverse transmission, allowing for versatile operation in various agricultural tasks. The gear configuration enhances maneuverability and adaptability, making it suitable for both fieldwork and transport. However, the limited transmission options could present challenges in navigating steep terrains or achieving fine speed control compared to modern tractors with more gear ratios.
| Transmission |
gear |
| Gears |
5 forward and 1 reverse |
MECHANICAL
The McCormick-Deering WD-9 tractor features a 4x2 2WD chassis, providing basic traction for light to moderate agricultural tasks. Its manual steering may require more physical effort, especially in tight turns, while the differential mechanical contracting band brakes offer decent control but may be less responsive than modern hydraulic systems. The 5-speed transmission allows for versatility in speed management, ideal for different field applications, though it may limit performance on challenging terrain compared to tractors with advanced transmission options.
| Chassis |
4x2 2WD |
| Steering |
manual |
| Brakes |
differential mechanical contracting band |
| Cab |
Open operator station |
| Transmission |
5-speed |
MCCORMICK-DEERING WD-9 TIRES
The McCormick-Deering WD-9 features a versatile wheelbase suited for various agricultural tasks, with its front tires (7.50x18) providing improved maneuverability, while the rear tires (14.00x21) offer substantial traction in diverse soil conditions. This configuration enables effective soil cultivation and transport, but challenges may arise in muddy terrains due to potential bogging. Overall, its tire sizes suggest a balanced trade-off between stability and agility, making it well-suited for mid-sized farm operations.
| Ag front |
7.50x18 |
| Ag rear |
14.00x21 |
DIMENSIONS
| Length |
134inches / 340cm |
| Width |
68inches / 172cm |
| Operating weight |
6,650lbs / 3016kg |
| Ballasted weight |
10,260lbs / 4653kg |
DIMENSIONS & TIRES
The McCormick-Deering WD-9 tractor, weighing 6,650 lbs (3016 kg), features robust 48-12 rear tires that enhance traction and stability, making it suitable for heavy-duty agricultural tasks. Its front tire size of 30-6 ensures good maneuverability, although the larger rear tires may limit sharp turns in tight spaces. Overall, this tractor excels in handling plowing and towing applications but may struggle on uneven terrains due to its weight distribution.
| Weight |
6,650lbs / 3016kg |
| Front tire |
30-6 |
| Rear tire |
48-12 |
WD-9 SERIAL NUMBERS
| Location |
Serial number plate near the fuel tank |
| 1940 |
501 |
| 1941 |
578 |
| 1942 |
2993 |
| 1943 |
3651 |
| 1944 |
5394 |
| 1945 |
11459 |
| 1946 |
17289 |
| 1947 |
22714 |
| 1948 |
29207 |
| 1949 |
36159 |
| 1950 |
45551 |
| 1951 |
51739 |
| 1952 |
59407 |
| 1953 |
64014 |
