John Deere 1840F Tractor Parts
1840F parts and accessories
The John Deere 1840F was a popular utility tractor manufactured in the early 1980s, offering a blend of reliability and versatility for diverse farming operations. Powered by a robust diesel engine producing around 52 horsepower, it delivered ample power for various tasks. Its strong PTO, rated at approximately 47 horsepower, made it a favorite for running implements like mowers and balers, cementing its place as a dependable workhorse on farms.
The John Deere 1840F, introduced in the early 1980s, quickly became a staple on farms seeking a versatile and dependable utility tractor. It was designed to handle a wide range of tasks, from field work to loader operations. At its heart was a Yanmar 3T90J diesel engine, a 3-cylinder powerplant displacing 90 cubic inches (1.5 liters) and producing approximately 52 horsepower. This engine provided a good balance of power and fuel efficiency, making it economical to operate. The 1840F typically came equipped with a gear-driven transmission, offering 8 forward and 4 reverse speeds. This provided a good range of options for matching ground speed to the task at hand. The independent PTO delivered around 47 horsepower at 540 RPM, enabling the tractor to power a variety of implements. The hydraulic system had a capacity of around 9 GPM and typically featured 2 remote valves, allowing for operation of hydraulic cylinders on implements. The 3-point hitch was a Category II, offering a lift capacity of around 2600 lbs, making it suitable for attaching a wide array of implements. Compared to other models in the John Deere lineup, the 1840F offered a good combination of size, power, and features. It was larger and more powerful than smaller compact tractors, but more nimble and affordable than larger row-crop tractors, making it a popular choice for small to medium-sized farms engaged in hay production, livestock operations, and light tillage.
Specifications
| Engine | Yanmar 3T90J 52 HP 90 ci Diesel |
|---|---|
| PTO HP | 47 HP @ 540 RPM |
| Transmission | Gear 8F/4R |
| Hydraulics | 9 GPM, 2 remotes |
| 3-Point Hitch | Category II, 2600 lbs |
| Fuel Capacity | 14 gallons |
| Weight | 4800 lbs |
| Years Produced | Early 1980s |
Maintenance Tips
- Engine Oil & Filter: Change the engine oil and filter every 250 hours of operation. Use a high-quality diesel engine oil meeting API CI-4 or higher specifications for optimal engine protection.
- Hydraulic System Maintenance: Inspect hydraulic fluid levels regularly and change the hydraulic fluid and filter every 500 hours. Ensure proper cleanliness to prevent contamination and maintain hydraulic system performance.
- Fuel System Care: Use clean, fresh diesel fuel and check the fuel filter regularly. Drain any water or sediment from the fuel tank periodically to prevent fuel system issues.
- Seasonal Storage: Before storing the tractor for an extended period, stabilize the fuel with a fuel stabilizer, change the engine oil and filter, and grease all lubrication points. Disconnect the battery and store it in a cool, dry place.
History & Background
The John Deere 1840F was introduced as part of a broader line of utility tractors designed to meet the needs of farmers seeking a reliable and versatile machine. It represented a step up in power and capability from smaller compact tractors, while remaining more maneuverable and economical than larger row-crop models. The 1840F played a significant role in supporting diverse farming operations during its production years.
Frequently Asked Questions
What engine is in the John Deere 1840F?
The John Deere 1840F is powered by a Yanmar 3T90J 3-cylinder diesel engine, producing approximately 52 horsepower.
What is the PTO horsepower on a 1840F?
The PTO horsepower on the John Deere 1840F is approximately 47 horsepower at 540 RPM.
What oil filter fits the 1840F?
The oil filter commonly used for the John Deere 1840F is a John Deere M806418 or equivalent. Cross-references include Fram PH3593A, Wix 51365, and Baldwin B1421.
What are common parts needed for the 1840F?
Common wear parts for the John Deere 1840F include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic cylinder seals, steering components (tie rod ends, ball joints), clutch discs, and brake pads.

AR39052 - Hydraulic Pump Seal
SKU: AR39052
48 in stock

AR26746 - Elbow; 90° Adjustable Fitting
SKU: AR26746
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AR103036 - Hydraulic Pump
SKU: AR103036
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AL71019 - Hydraulic Pump Stroke Control Valve Kit
SKU: AL71019
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AL71016 - Inlet Valve (2/Pack) Kit
SKU: AL71016
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RW10286 - Rear Wheel 10" x 28" Rim
SKU: RW10286
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JD3210 - Front Wheel 8L X 16" Rim
SKU: JD3210
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L39119 - Toolbox Bracket
SKU: L39119
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AR68801 - Weight Retainer Plate
SKU: AR68801
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AL66516 - Fender Extension (LH)
SKU: AL66516
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AL66515 - Fender Extension (RH)
SKU: AL66515
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AL56766 - LH/RH Side Screen
SKU: AL56766
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AL31040 - Cowl (LH)
SKU: AL31040
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AL31039 - (RH) Cowl
SKU: AL31039
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T30803 - PTO (1000 RPM) Shaft
SKU: T30803
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R45126 - PTO Guide
SKU: R45126
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R129680 - Internal; 1/Pack Snap Ring
SKU: R129680
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L60548 - PTO Bearing Cap Gasket
SKU: L60548
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L39949 - PTO (540 RPM) Shaft
SKU: L39949
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L28712 - PTO (540 RPM) Shaft
SKU: L28712
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JD9320 - Open Ball; Single Row Bearing
SKU: JD9320
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AT29707 - PTO (540 RPM) Shaft
SKU: AT29707
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AL28922 - Oil Pump Drive Shaft Seal
SKU: AL28922
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AL31492 - Muffler (Underhood)
SKU: AL31492
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