John Deere 840 Utility Tractors Specifications
Engine
The engine is a John Deere diesel 3-cylinder liquid-cooled with a displacement of 179ci / 2.9L and a bore/stroke of 4.19x4.33inches / 106x 110mm. It has a power output of 37.5hp / 28.0kW and a direct injection fuel system. The compression ratio is 16.8:1 and it has a rated RPM of 2400. The engine operates at a range of 1300-2400 RPM and has a starter voltage of 12 with a starter power of 4 hp /3.0 kW. The oil capacity is 7.4qts / 7.0L and the coolant capacity is 11.1qts / 10.5L.
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Find Suppliers & Request SamplesTransmission
The transmission is an 8-speed collar shift 16-speed two-speed power shift with an engine power output of 37.5hp / 28.0kW and a PTO (claimed) output of 33.5hp / 25.0kW. The transmission is designed to provide smooth shifting and efficient power transfer to the wheels. It is a reliable and durable transmission that can handle heavy loads and tough terrain. The transmission is easy to operate and provides good fuel efficiency. The transmission is well-suited for a variety of applications, including farming, construction, and landscaping.
Brakes
The brakes are hydraulic wet disc brakes that provide reliable and consistent stopping power. The brakes are designed to work in a variety of conditions and are easy to maintain. The John Deere diesel 3-cylinder liquid-cooled engine provides the power for the brakes. The brakes have a good feel and are easy to modulate. The brakes are well-suited for a variety of applications, including farming, construction, and landscaping. The oil capacity is 7.4qts / 7.0L and the coolant capacity is 11.1qts / 10.5L.
Steering
The steering is manual and is designed to provide precise control and easy maneuverability. The John Deere 2.9L 3-cyl diesel engine provides the power for the steering. The steering is well-suited for a variety of applications, including farming, construction, and landscaping. The steering is easy to operate and provides good feedback to the operator. The steering is reliable and durable, and requires minimal maintenance.
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Find Suppliers & Request SamplesCommon Problems
Users have reported issues with the planetary final drives, which can be expensive to repair or replace. Some users have also reported problems with the manual steering, which can be difficult to operate in certain conditions. The cab is a four-post ROPS, which some users have found to be uncomfortable or lacking in features. The hydraulic wet disc brakes can be prone to overheating if used excessively, which can lead to reduced braking performance. Some users have also reported issues with the 8-speed collar shift 16-speed two-speed power shift transmission, which can be difficult to shift or prone to slipping.
What Users Like
Users appreciate the versatility of the John Deere 840, which is well-suited for a variety of applications, including farming, construction, and landscaping. The ag front tires (6.50-16) and ag rear tires (9.5-36/12.4-28) provide good traction and stability in a variety of conditions. Users also appreciate the smooth shifting and efficient power transfer of the 8-speed collar shift 16-speed two-speed power shift transmission. The John Deere diesel 3-cylinder liquid-cooled engine provides reliable and consistent power, and is easy to maintain. The manual steering provides precise control and easy maneuverability, which is important for many users.
Techincal Specifications
Power | |
| Engine | 37.5hp / 28.0kW |
| Pto (claimed) | 33.5hp / 25.0kW |
Engine Detail | |
| Description | John Deere diesel 3-cylinder liquid-cooled |
| Displacement | 179ci / 2.9L |
| Bore/stroke | 4.19x4.33inches / 106x 110mm |
| Power | 37.5hp / 28.0kW |
| Fuel System | direct injection |
| Compression | 16.8:1 |
| Rated Rpm | 2400 |
| Operating Rpm | 1300-2400 |
| Starter Volts | 12 |
| Starter Power | 4 hp /3.0 kW |
| Oil Capacity | 7.4qts / 7.0L |
| Coolant Capacity | 11.1qts / 10.5L |
Engine | |
| Description | John Deere 2.9L 3-cyl diesel |
Mechanical | |
| Chassis | 4x2 2WD |
| Final Drives | planetary |
| Steering | manual |
| Brakes | hydraulic wet disc |
| Cab | Four-post ROPS |
| Transmissions | 8-speed collar shift 16-speed two-speed power shift |
Tires | |
| Ag Front | 6.50-16 |
| Ag Rear | 9.5-36/12.4-28 |
Dimensions | |
| Wheelbase | 74.4inches / 188cm |
| Length | 138inches / 350cm |
| Width | 65.4inches / 166cm |
| Height (rops) | 94.1inches / 239cm |
| Height (exhaust) | 103.1inches / 261cm |
| Shiping Weight | 5004lbs / 2269kg |
| Clearance (front Axle) | 21inches / 53cm |
| Front Tread | 49.6 to 79.5inches / 125to 201cm |
| Rear Tread | 53.5 to 73.2inches / 135to 185cm |
Dimensions And Tires | |
| Wheelbase | 74.4inches / 188cm |
| Weight | 5004lbs / 2269kg |
| Front Tire | 6.50-16 |
| Rear Tire | 12.4-32 |
Capacity | |
| Fuel | 20.6gal / 78.0L |
| Hydraulic System | 10.8gal / 40.9L |
Hydraulics | |
| Type | closed center |
| Capacity | 10.8gal / 40.9L |
| Pump Flow | 6.1gpm / 23.1lpm |
Tractor Hitch | |
| Rear Type | II/I |
| Rear Lift | 4878lbs / 2212kg |
Electrical | |
| Ground | negative |
| Charging System | alternator |
| Charging Amps | 33 |
| Batteries | 2 |
| Battery Volts | 12 |
Power Take Off Pto | |
| Rear Pto | live/independent |
| Clutch | dry disc/wet disc, independent PTO |
| Rear Rpm | 540 |
| Engine Rpm | 1000@2070 |
| Front Pto | optional |
| Front Rpm | 1000 |