| Manufacturer | John Deere |
| Price | 650(USD) |
| Model | H |
| Equipment Type | Row-Crop Tractors |
| Factory | Waterloo, Iowa, USA |
NEBRASKA TRACTOR TEST 312 2
| Description | Distillate 3-speed 2WD October 311938, - October 10, 1938 Link: Nebraska Tractor Test 312 file Drawbar performance Gear 2 used for power test Gear 1 used for pull test |
| Belt power (max) | 14.84hp / 11.1kW |
| Belt fuel use (max) | 1.3gal/hour / 4.9l/hour |
| Max power | 12.48hp / 9.3kW |
| Max pull | 1,839lbs / 834kg |
JOHN DEERE H POWER
| Drawbar (claimed) | 12hp / 8.9kW |
| Belt (claimed) | 14hp / 10.4kW |
| Plows | 1 (16-inch) |
| Drawbar (tested) | 12.48hp / 9.3kW |
| Belt (tested) | 14.84hp / 11.1kW |
ENGINE DETAIL
The John Deere H is a kerosene-powered tractor equipped with a 2-cylinder, liquid-cooled engine, featuring a relatively low compression ratio of 4.75:1, which may limit power output but enhances durability and fuel efficiency. Its low rated RPM of 1400 combined with the hand-crank starter (later electric start option) makes it ideal for tasks requiring steady torque rather than high speed, although the manual start may pose usability challenges. Despite the oil-based air cleaner and generous coolant capacity of 22 quarts, regular maintenance is crucial to prevent performance issues over time.
| Description | John Deere kerosene 2-cylinder liquid-cooled |
| Displacement | 99.7ci / 1.6L |
| Bore/Stroke | 3.56x5.00inches / 90x 127mm |
| Air cleaner | oil bath |
| Compression | 4.75 : 1 |
| Rated RPM | 1400 |
| Firing order | 1-2 |
| Starter | hand-crank electric*Electric start became available as an option in 1941, tractor serial number 27000 |
| Starter volts | 6 |
| Oil capacity | 4.5qts / 4.3L |
| Coolant capacity | 22qts / 20.8L |
| Sparkplug gap | 0.030inches / 0.762mm |
JOHN DEERE H ENGINE
The John Deere H tractor features a 1.6L 2-cylinder kerosene engine, offering a compact and efficient design suitable for light agricultural tasks. With a 7.5-gallon fuel tank, it provides extended operation time between refuels, though its auxiliary fuel capacity of 0.875 gallons may limit versatility in varied fuel requirements. This tractor is ideal for small farms, but the reliance on kerosene could pose challenges in accessibility and fluctuating fuel prices.
| Description | John Deere 1.6L 2-cyl kerosene |
| Fuel tank | 7.5gal / 28.4L |
| Aux. fuel | 0.875gal / 3.3L |
TRANSMISSION
The John Deere H tractor features a gear transmission with three forward gears and one reverse, which allows for basic operational flexibility in low-speed applications. The dry disc clutch provides durability but may require more frequent adjustments compared to hydraulic systems. This setup is ideal for small-scale farming tasks or maintenance in confined areas, though the limited gear range might challenge performance in varied field conditions.
| Transmission | John Deere |
| Type | gear |
| Gears | 3 forward and 1 reverse |
| Clutch | dry disc |
MECHANICAL
The John Deere H tractor features a 4x2 2WD chassis, which offers adequate traction for light agricultural tasks but may struggle with stability on uneven terrain. Its manual steering system provides simplicity and reliability, though it may require more effort in tight maneuvering. With a basic 3-speed gear transmission, operators can expect straightforward operation, but the limited gear range may affect its performance in varying field conditions.
| Chassis | 4x2 2WD |
| Steering | manual |
| Cab | Open operator station |
| Transmission | 3-speed gear |
JOHN DEERE H TIRES
The John Deere H tractor utilizes Ag front tires sized 4.00-15 and rear tires sized 8-32, offering a balance of stability and traction for fieldwork. The smaller front tire design may enhance maneuverability in tighter spaces, while the larger rear tires provide improved load-bearing capacity and traction on various terrains. A key consideration is the tractor's power-to-weight ratio, which can affect performance; ensure operational tasks are matched to the tractor's capabilities to prevent underutilization or overload.
| Ag front | 4.00-15 |
| Ag rear | 8-32 |
DIMENSIONS
| Length | 111.25inches / 282cm |
| Width | 79inches / 200cm |
| Height | 52inches / 132cm |
| Shiping weight | 2080lbs / 943kg |
| Ballasted weight | 3035lbs / 1376kg |
| Rear tread | 44 to 80inches / 111to 203cm |
DIMENSIONS & TIRES
The John Deere H tractor, with a weight of 2080 lbs (943 kg), provides stability and traction for various agricultural tasks. The front tire size of 4.00-15 offers reasonable maneuverability, while the rear tire size of 8-32 enhances pulling capacity and ground engagement, making it suitable for tillage and light plowing. However, the relatively lower weight may limit its performance in very heavy soil conditions, necessitating care during operations to prevent sinking or suboptimal traction.
| Weight | 2080lbs / 943kg |
| Front tire | 4.00-15 |
| Rear tire | 8-32 |
H SERIAL NUMBERS
| Location | Left side near flywheel until 1941. Then on right side in front of pulley. Production years shown |
| 1939 | 1000 |
| 1940 | 10000 |
| 1941 | 20615 |
| 1942 | 35699 |
| 1943 | 44754 |
| 1944 | 45642 |
| 1945 | 47796 |
| 1946 | 53327 |
| 1947 | 58614 |
| Final | 61116 |
BELT PULLEY
| Diameter | 12.25inches / 31cm |
| Width | 4.5inches / 11cm |
| RPM | 700 |
ELECTRICAL
| Ground | positive |
| Battery volts | 6 |