| Manufacturer | John Deere |
| Price | 1,200(USD) |
| Model | GP |
| Equipment Type | Row-Crop Tractors |
| Factory | Waterloo, Iowa, USA |
ENGINES OVERVIEW
The John Deere GP tractor is powered by a 5.1L or 5.6L 2-cylinder kerosene engine, providing a moderate power output suitable for lighter agricultural tasks. Its dual-fuel capability allows for efficient operation, but the engine's reliance on kerosene may limit fuel availability in some regions. Additionally, the simple design offers easy maintenance, but the lower horsepower might pose challenges for more demanding applications.
| Description | John Deere 5.1L 2-cyl kerosene John Deere 5.6L 2-cyl kerosene |
ENGINE DETAIL 1
The John Deere GP tractor features a distinctive 2-cylinder, liquid-cooled kerosene engine with a displacement of 311.6 ci (5.1 L) and a bore/stroke ratio of 5.75x6.00 inches, allowing for adequate torque delivery at a rated RPM of 900. A water-injection system enhances performance by reducing the risk of detonation, which is crucial for engine longevity. However, the tractor's lower RPM may limit its speed and power output compared to modern counterparts, making it best suited for lighter agricultural tasks and historical preservation scenarios.
| Description | John Deere kerosene 2-cylinder/liquid-cooled/Original engine, used until 1931. Water-injection system was used to prevent detonation |
| Displacement | 311.6ci / 5.1L |
| Bore/Stroke | 5.75x6.00inches / 146x 152mm |
| Rated RPM | 900 |
| Coolant capacity | 36qts / 34.1L |
ENGINE DETAIL 2
The John Deere GP tractor features a 339.3ci (5.6L) kerosene engine with a 6-inch bore and stroke, providing a balanced power output at a rated RPM of 950. Its lower compression ratio enhances fuel efficiency and eliminates pre-ignition issues associated with low-quality fuel, making it suitable for diverse operating conditions. However, the reliance on kerosene limits fuel flexibility; operators must ensure access to appropriate fuel types, particularly in rural settings.
| Description | John Deere kerosene 2-cylinder liquid-cooled, The new engine was introuded in 1931 on GP serial number 224100. It had lower compression but with a quarter-inch larger bore, producing slightly more power with better fuel economy. The lower compression eliminated the pre-ignition problem when using low-quality fuel, so the water-injection system was eliminated |
| Displacement | 339.3ci / 5.6L |
| Bore/Stroke | 6.00x6.00inches / 152x 152mm |
| Rated RPM | 950 |
| Coolant capacity | 36qts / 34.1L |
JOHN DEERE GP ENGINES
The John Deere GP tractor features a robust 5.1L or 5.6L 2-cylinder kerosene engine, providing reliable power for agricultural tasks. With a 16-gallon fuel tank and an auxiliary 2-gallon reserve, it allows for extended operation between refuels, which is advantageous for large farming operations. However, the reliance on kerosene may limit versatility compared to diesel alternatives, and users should ensure adequate fuel availability for optimal performance.
| Description | John Deere 5.1L 2-cyl kerosene John Deere 5.6L 2-cyl kerosene |
| Fuel tank | 16gal / 60.6L |
| Aux. fuel | 2gal / 7.6L |
TRANSMISSION
The John Deere GP tractor features an unsynchronized gearbox with a basic configuration of 3 forward and 1 reverse gear, limiting the operator's ability to shift gears smoothly under load. This setup may enhance simplicity and reliability for basic farming tasks; however, it presents challenges in terms of speed control and efficiency during variable field conditions. Operators should prepare for potential difficulties in maneuverability, particularly when precision adjustments in speed are required.
| Type | unsynchronized gear |
| Gears | 3 forward and 1 reverse |
JOHN DEERE GP TRANSMISSION
The John Deere GP tractor features a 3-speed unsynchronized gear system, which allows for simple operation but can lead to challenging shifting, especially under load. Advantages include its robust design and lower maintenance requirements, but operators must be skilled in timing shifts to avoid gear grinding. This tractor is best suited for light agricultural tasks where speed variability is less critical.
| Description | 3-speed unsynchronized gear |
MECHANICAL
The John Deere GP tractor, equipped with a two-wheel drive system and an open operator station, offers simplicity and ease of maintenance with manual steering. Its lightweight design is advantageous for maneuverability in small farming operations, but may present challenges in traction on uneven or muddy terrains. Ideal for light-duty tasks or hobby farming, the GP tractor requires careful operation to optimize its performance in diverse soil conditions.
| Description | Two-wheel drive Open operator station |
| Steering | manual |
JOHN DEERE GP TIRES
The John Deere GP tractor is equipped with 6.00x16 front tires and 10.00x32 rear tires, which provide a favorable balance of traction and flotation for agricultural tasks. The larger rear tires enhance stability and allow for better weight distribution, making it suitable for plowing and heavy-duty fieldwork. However, the tire size may limit maneuverability in tight spaces, which should be considered when planning operations on smaller or uneven terrains.
| Ag front | 6.00x16 |
| Ag rear | 10.00x32 |
DIMENSIONS & TIRES
The John Deere GP tractor, weighing 3,600 lbs (1632 kg), features robust rear tires (42.75x10) for enhanced traction in agricultural applications. The smaller front tires (24x6) may limit stability during heavy loads, particularly on uneven terrain. This configuration is advantageous for maneuverability in tight spaces but could present challenges in stability when traversing steep inclines or soft ground.
| Weight | 3,600lbs / 1632kg |
| Front tire | 24x6 |
| Rear tire | 42.75x10 |
GP SERIAL NUMBERS
| 1929 | 201336 |
| 1930 | 5000-5202 (GP-P) |
| Final | 15732 (GP-O) |
GP SERIAL LOCATION
| Description | Below gear shift lever |