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.

L28376 - Differential Bevel Gear
SKU: L28376
13 in stock

AT176621 - Brake Band
SKU: AT176621
158 in stock

AR39128 - Brake Piston/ Clutch Drum (Bronze) Disc
SKU: AR39128
112 in stock

AL57975 - Transmission Housing Gasket Set
SKU: AL57975
118 in stock

AL55075 - PTO Clutch Disc
SKU: AL55075
95 in stock

AL41727 - Syncronizer
SKU: AL41727
18 in stock

AL38234 - Brake Disc
SKU: AL38234
Out of stock

AL23836 - Check Valve
SKU: AL23836
144 in stock

AL120106 - Oil Pump
SKU: AL120106
83 in stock

RE16495 - Connecting Rod
SKU: RE16495
27 in stock

R97352 - Oil Filter Inlet Gasket
SKU: R97352
41 in stock

R97342 - Pan Gasket
SKU: R97342
143 in stock

R96456 - Intake Valve (Std) Insert
SKU: R96456
154 in stock

R92425 - Head Gasket
SKU: R92425
103 in stock

R87627 - Valve Stem O-Ring
SKU: R87627
162 in stock

R85363 - Head Bolt
SKU: R85363
10683 in stock

R82820 - Camshaft
SKU: R82820
20 in stock

R81989 - Front Crankshaft Sleeve
SKU: R81989
323 in stock

R80724 - Cylinder Liner
SKU: R80724
10 in stock

R80136 - Oil Filler Cap
SKU: R80136
152 in stock

R80033 - Connecting Rod (2.750" Long) Capscrew
SKU: R80033
131 in stock

R79629 - Intake (.015") Valve
SKU: R79629
16 in stock

R79628 - Intake (.003") Valve
SKU: R79628
15 in stock

R79626 - EXHAUST (.015") VALVE
SKU: R79626
10 in stock
