| Manufacturer |
McCormick-Deering |
| Price |
- |
| Model |
W-40 |
| Equipment Type |
Standard-Tread Tractors |
| Factory |
Milwaukee, Wisconsin, USA |
NEBRASKA TRACTOR TEST 268 2
| Description |
Distillate 1600rpm 3-speed 2WD August 25 - September 3, 1936 Link: Nebraska Tractor Test 268 file Drawbar performance Gear 2 used for power test Gear 1 used for pull test |
| Belt power (max) |
45.69hp / 34.1kW |
| Belt fuel use (max) |
5.4gal/hour / 20.4l/hour |
| Max power |
31.79hp / 23.7kW |
| Max pull |
4,399lbs / 1995kg |
NEBRASKA TRACTOR TEST 269 2
| Description |
Distillate 1750rpm 3-speed 2WD September 3 - 15, 1936 Link: Nebraska Tractor Test 269 file Drawbar performance Gear 2 used for power test Gear 1 used for pull test |
| Belt power (max) |
49.76hp / 37.1kW |
| Belt fuel use (max) |
5.6gal/hour / 21.2l/hour |
| Max power |
35.22hp / 26.3kW |
| Max pull |
4,982lbs / 2259kg |
MCCORMICK-DEERING W-40 POWER
| Drawbar (claimed) |
28hp / 20.9kW |
| Belt (claimed) |
45hp / 33.6kW |
| Drawbar (tested) |
35.22hp / 26.3kW |
| Belt (tested) |
49.76hp / 37.1kW |
ENGINES OVERVIEW
The McCormick-Deering W-40 features a robust International Harvester engine lineup, offering options in 4.9L gasoline, 4.9L kerosene, and a 4.0L gasoline variant which provide flexibility in fuel choice for diverse operational needs. The advantages of this tractor include its longevity and reliability, owing to the classic IH engineering and relatively simple maintenance, while the use of kerosene may present challenges in cold starts and fuel availability. Ideal for medium-scale farm operations, the W-40 excels in tasks like tillage and hauling, ensuring efficient performance across varied agricultural applications.
| Description |
International Harvester 4.9L 6-cyl gasoline/International Harvester 4.9L 6-cyl kerosene/International Harvester 4.0L 6-cyl gasoline |
ENGINE DETAIL 1
The McCormick-Deering W-40 tractor features a robust 6-cylinder, liquid-cooled gasoline engine with a displacement of 298.2 ci (4.9L), ensuring ample power for various agricultural tasks. At a rated RPM of 1750, it strikes a balance between torque and fuel efficiency, ideal for heavy-duty applications. However, its oil and coolant capacities of 9 quarts and 48 quarts respectively may necessitate careful maintenance to ensure optimal engine performance and longevity.
| Description |
International Harvester FBB gasoline 6-cylinder liquid-cooled vertical I-head |
| Displacement |
298.2ci / 4.9L |
| Bore/Stroke |
3.75x4.50inches / 95x 114mm |
| Rated RPM |
1750 |
| Oil capacity |
9 qts /8.5 L |
| Coolant capacity |
48qts / 45.4L |
ENGINE DETAIL 2
The McCormick-Deering W-40 features a robust 6-cylinder kerosene engine with a displacement of 298.2 ci (4.9 L), providing strong torque for agricultural applications, particularly in heavy tillage and fieldwork. Its oil bath air cleaner enhances filtration efficiency, reducing engine wear, while the rated speed of 1750 RPM is optimal for balancing power output and fuel efficiency. However, the kerosene fuel type may pose challenges in terms of availability and fuel management compared to diesel alternatives.
| Description |
International Harvester kerosene 6-cylinder liquid-cooled |
| Displacement |
298.2ci / 4.9L |
| Bore/Stroke |
3.75x4.50inches / 95x 114mm |
| Air cleaner |
oil bath |
| Rated RPM |
1750 |
ENGINE DETAIL 3
The McCormick-Deering W-40 tractor features a 242ci (4.0L) gasoline engine, optimized for lower RPM operation at 1750, which can enhance fuel efficiency but may limit maximum power output. Its oil bath air cleaner effectively reduces contaminants, promoting engine longevity, although it may require more frequent maintenance compared to dry filters. The transition to a more powerful 298ci engine in later models indicates that while the W-40 was adequate for light to moderate tasks, users requiring higher performance should consider upgrades or later iterations for enhanced capability.
| Description |
International Harvester gasoline 6-cylinder liquid-cooled, The 242ci engine was used on the early production models of the WA-40 with gasoline engine. This was later replaced with the 298ci engine |
| Displacement |
242ci / 4.0L |
| Bore/Stroke |
3.375x4.50inches / 86x 114mm |
| Air cleaner |
oil bath |
| Rated RPM |
1750 |
MCCORMICK-DEERING W-40 ENGINES
The McCormick-Deering W-40 features a robust International Harvester 4.9L 6-cylinder gasoline engine, which offers reliable power for farming operations. With a substantial fuel tank capacity of 31 gallons, this tractor can sustain longer working hours without frequent refueling, enhancing productivity in large fields. However, users should consider the potential limited availability of kerosene fuel options depending on their location, which may affect operational efficiency in certain scenarios.
| Description |
International Harvester 4.9L 6-cyl gasoline/International Harvester 4.9L 6-cyl kerosene/International Harvester 4.0L 6-cyl gasoline |
| Fuel tank |
31gal / 117.3L |
| Aux. fuel |
1.25gal / 4.7L |
TRANSMISSIONS OVERVIEW
The McCormick-Deering W-40 tractor features a 3-speed unsynchronized gear system, which provides basic speed adjustments for various field applications, but can lead to challenges in smooth shifting under load. The 4-speed unsynchronized gear option offers increased versatility and improved performance in varying terrain, yet it may require more skill from the operator to manage shifts effectively. In scenarios involving heavier loads or uneven ground, the 4-speed option may enhance productivity despite a steeper learning curve for gear changes.
| Description |
3-speed unsynchronized gear 4-speed unsynchronized gear |
TRANSMISSION 1
The McCormick-Deering W-40 features a simple unsynchronized gear transmission with 3 forward gears and 1 reverse, making it suitable for straightforward agricultural tasks but potentially limiting in speed modulation and smoother shifting. The dry disc clutch provides reliable engagement, but it may require more maintenance in dusty environments compared to oil-bath clutches. Optimal scenarios for this tractor include light cultivation and transport tasks where precision shifting is less critical.
| Type |
unsynchronized gear |
| Gears |
3 forward and 1 reverse |
| Clutch |
dry disc |
TRANSMISSION 2
The McCormick-Deering W-40 features an unsynchronized transmission with 4 forward and 1 reverse gear, which may present shifting challenges under load, particularly for operators lacking experience with non-synchronized systems. The dry disc clutch offers robust durability but can lead to harsher engagements compared to hydraulic systems. Notably, the high-speed fourth gear is optimized exclusively for rubber-tired configurations, maximizing efficiency and speed on firm ground conditions.
| Type |
unsynchronized gear |
| Gears |
4 forward and 1 reverse |
| Clutch |
dry disc |
| Description |
High-speed fourth gear was only for tractors with rubber tires |
MECHANICAL
The McCormick-Deering W-40 features a 4x2 2WD chassis, with a bull gear final drive, which provides robust torque delivery for fieldwork but may limit traction on uneven terrain. The manual steering system can require significant physical effort, particularly in tight spaces or during extended use. With options of both 3-speed and 4-speed unsynchronized transmissions, operators may face challenges in gear shifting, making it less suitable for novice users but advantageous for those seeking mechanical simplicity and reliability in straightforward agricultural applications.
| Chassis |
4x2 2WD |
| Final drives |
bull gear |
| Steering |
manual |
| Cab |
Open operator station |
| Transmissions |
3-speed unsynchronized gear 4-speed unsynchronized gear |
POWER TAKE-OFF (PTO)
MCCORMICK-DEERING W-40 TIRES
The McCormick-Deering W-40 features a front axle equipped with 34x6 steel wheels, which provide enhanced durability but can compromise traction on softer terrains. Its rear axle, fitted with larger 50x12 steel wheels, offers increased stability under heavy loads, ideal for mid-sized farm operations. While steel wheels are robust, they may cause soil compaction, making them less suitable for sensitive ground conditions.
| Ag front |
34x6 (steel) |
| Ag rear |
50x12 (steel) |
DIMENSIONS
| Wheelbase |
85inches / 215cm |
| Length |
141.5inches / 359cm |
| Width |
65.75inches / 167cm |
| Height (exhaust) |
73inches / 185cm |
| Weight |
6100lbs / 2766kg |
| Front tread |
52.25inches / 132cm |
| Rear tread |
53inches / 134cm |
DIMENSIONS & TIRES
The McCormick-Deering W-40 tractor features a relatively short wheelbase of 85 inches, enhancing maneuverability, making it suitable for smaller farms and tight spaces. Weighing 6,100 lbs, it offers good stability during operation, but may challenge traction on loose or hilly terrain due to its weight distribution. The tire specifications, with large rear tires (50x12), provide improved traction and load-carrying capacity, beneficial for heavy tilling and plowing tasks.
| Wheelbase |
85inches / 215cm |
| Weight |
6100lbs / 2766kg |
| Front tire |
34x6 |
| Rear tire |
50x12 |
W-40 SERIAL NUMBERS
| 1935 |
501 |
| 1936 |
1441 |
| 1937 |
5120 |
| 1938 |
7665 |
| 1939 |
9756 |
| 1940 |
10323 |
BELT PULLEY
| Diameter |
15.7inches / 39cm |
| Width |
9inches / 22cm |
| RPM |
645 |
| Speed |
2647ft/min / 806.81meters/min |
