John Deere 4640

The John Deere 4640, from the Iron Horses Series, is a rugged and versatile row-crop tractor produced between 1978 and 1982 in Waterloo, Iowa, USA. Known for its reliability and powerful turbocharged intercooled diesel engine, the 4640 offers exceptional performance in various agricultural applications. It features options for both partial power shift and full power shift transmissions, providing flexibility for different operating needs. With its strong build, hydraulic system, and spacious Sound-Gard cab, the John Deere 4640 is a dependable workhorse designed to tackle demanding tasks in the field, making it a favorite among farmers during its production years.

John Deere 4640 Specifications
Model Year1978 – 1982
SeriesIron Horses Series
TypeRow-Crop tractor
Production
ManufacturerJohn Deere
BuiltWaterloo, Iowa, USA
Quad-Range ROPS 2WD$46,316
Power Shift Cab 2WD$53,123
Engine Detail
EngineTurbocharged intercooled diesel
Cylinders6-cylinder
Displacement466 cubic inches (7.6 liters)
Bore/Stroke4.5625×4.75 inches (116×121 mm)
Compression Ratio15.5:1
Rated RPM2200
Idle RPM800-2400
Operating RPM1500-2200
Starter Volts12
Oil Capacity20 quarts (18.9 liters)
Coolant Capacity38 quarts (36.0 liters)
Transmission Options
John Deere Quad-RangePartial power shift with 16 forward and 6 reverse gears.
John Deere PowerShiftFull power shift with 8 forward and 4 reverse gears.
Power
PTO (Claimed)155 horsepower (115.6 kW)
Drawbar (Tested)132.44 horsepower (98.8 kW)
PTO (Tested)156.30 horsepower (116.6 kW)
Mechanical
DriveAvailable in 4×2 2WD or 4×4 HFWD 4WD configurations.
Differential LockPedal-actuated hydraulic
SteeringHydrostatic power
BrakesHydraulic wet disc
CabSound-Gard cab standard.
Capacity
Fuel83 gallons (314.2 liters)
Hydraulic System16.5 gallons (62.5 liters)
Hydraulics
TypeClosed center
Valves2 or 3
Pump Flow23 gallons per minute (87.1 liters per minute)
Tractor Hitch
Rear TypeIII/IIIN
Rear Lift (at 24″/610mm)7328 lbs (3323 kg)
Power Take-Off (PTO)
Rear PTOIndependent
Rear PTO Type1000 (1.75)
Tires
Ag Front11.00-16
Ag Rear18.4-38
Dimensions
Wheelbase118.5 inches (300 cm)
Length171 inches (434 cm)
Width96 inches (243 cm)
Height (Cab)117 inches (297 cm)
Ground Clearance14.9 inches (37 cm)
Front Axle Clearance26 inches (66 cm)
Rear Axle Clearance28 inches (71 cm)
Weight
Shipping14,350 lbs (6,509 kg)
Operating (with duals)15,700 lbs (7,121 kg)
Ballasted18,585 lbs (8,430 kg)
Attachment – 168 Loader
Lift Capacity (Full at Pin)3,800 lbs (1,723 kg)
Breakout Force5,000 lbs (2,268 kg)
Dump Angle37°
Reach (Dumped)32 inches (81 cm)
Rollback at Ground12°
Height (at Pin)151 inches (383 cm)
Clearance (Dumped)132 inches (335 cm)
Clearance (Level)151 inches (383 cm)
Bucket Width96 inches (243 cm)
Bucket Capacity0.9 cubic yards (0.7 cubic meters)
John Deere 4640 Advantages

Powerhouse Engine: The 4640 is equipped with a turbocharged intercooled diesel engine with a displacement of 7.6 liters. This powerful engine provides high levels of torque and a claimed PTO output of 155 horsepower, making it capable of handling demanding tasks with ease.
Transmission Options: It offers the choice of a 16-speed partial power shift or an 8-speed full power shift transmission, allowing operators to select the one that best suits their needs. The clutchless shift-on-the-move capability in the full power shift option enhances convenience during operation.
Versatile Use: This tractor is versatile and can be used for various applications, including row-crop farming, thanks to its reliable performance and durability.
Hydraulic System: The 4640 features a closed-center hydraulic system with multiple valves, providing ample hydraulic power for implementing various attachments and equipment.
Sound-Gard Cab: The inclusion of the Sound-Gard cab ensures a comfortable and quieter working environment for the operator, reducing fatigue during long hours of operation.
Strong Build: John Deere is renowned for its build quality, and the 4640 is no exception. Its robust construction and heavy-duty components contribute to its longevity and ability to handle tough conditions.

John Deere 4640 Disadvantages

Cost: While it offers excellent performance and durability, the John Deere 4640 tends to come with a higher price tag compared to some other tractors in its class.
Sumarizing, the John Deere 4640 is a standout tractor known for its powerful engine, transmission options, versatility, and operator comfort. While it may have some disadvantages related to size, cost, and maintenance, its overall performance and durability make it a popular choice among farmers and agricultural enthusiasts.

Simmilar John Deere Tractors

The John Deere 4640 is a part of the Iron Horses Series and falls into the row-crop tractor category. Within the John Deere lineup, there are several similar tractors, each with its own set of features and capabilities. Here are some John Deere tractors that can be considered similar to the 4640:

John Deere 4840: The John Deere 4840 is closely related to the 4640 and is part of the same series. It offers similar power and versatility, making it suitable for a wide range of agricultural tasks.
John Deere 4240: The John Deere 4240 is a slightly smaller tractor than the 4640 but shares many features. It’s known for its reliability and performance in the field.
John Deere 4440: The John Deere 4440 is another model in the Iron Horses Series and is similar in size and capabilities to the 4640. It’s a popular choice among farmers for its power and durability.
John Deere 4650: The John Deere 4650 is a successor to the 4640 and offers improved features and performance. It has a larger engine and more advanced technology, making it suitable for modern farming practices.
John Deere 4840: The John Deere 4840 is part of the same series as the 4640 and offers similar power and versatility. It’s a reliable choice for various agricultural applications.

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