The John Deere 4630 tractor, part of the Generation II series, stands as a testament to John Deere’s rich history in the field of agricultural machinery. Manufactured by John Deere in Waterloo, Iowa, USA, from 1973 to 1977, the 4630 showcases the company’s commitment to delivering reliable and powerful equipment to farmers worldwide.

At the heart of the John Deere 4630 lies a robust and efficient John Deere engine. This tractor boasts a six-cylinder, aftercooled turbocharged diesel engine with a displacement of 6.6 liters (6,620 cm2 or 404 cu·in). The incorporation of a turbocharger and aftercooling technology enhances the engine’s performance, ensuring optimal power delivery, fuel efficiency, and durability. These specifications make the John Deere 4630 well-suited to handle the demands of modern agricultural operations.

The John Deere 4630 offers farmers versatility through its three available transmission options. The first is the John Deere Syncro-Range transmission, featuring eight forward and two reverse gears. This transmission provides smooth and precise shifting, allowing operators to match the speed and power requirements of various tasks efficiently.

For those seeking increased gear options, the John Deere Quad-Range transmission is an ideal choice. With an impressive sixteen forward and six reverse gears, this transmission empowers farmers to fine-tune their tractor’s performance to suit the specific needs of their operations.

Alternatively, the John Deere Power Shift transmission equips the 4630 with eight forward and two reverse gears. This transmission incorporates advanced shifting technology, enabling quick and effortless gear changes.

Features Of John Deere 4630 Tractor

The John Deere 4630 tractor offers a range of impressive features designed to enhance agricultural productivity and operator comfort. From its powerful engine and versatile transmission options to its ergonomic cab and reliable braking system, the 4630 is a dependable workhorse for farmers seeking efficiency and performance.

Engine

Powered by a John Deere engine, this row-crop tractor boasts a robust six-cylinder, aftercooled turbocharged diesel engine with a displacement of 6.6 liters (6,620 cm2 or 404 cu·in). The engine’s specifications, including a cylinder bore of 108.0 mm (4.25 in), a piston stroke of 120.0 mm (4.72 in), and a compression ratio of 15.1:1, contribute to its exceptional performance and benefits to farmers.

The John Deere engine in the 4630 tractor incorporates several advanced features to optimize its functionality and reliability. It utilizes a direct injection fuel system, for enhanced combustion efficiency and power output. The engine is equipped with a dry-type air cleaner with a secondary element, effectively filtering out contaminants from the intake air. To facilitate easy starting in various conditions, the engine features an ether injection pre-heating system. This system assists in cold starts by providing a boost of combustible ether. The full pressure, full flow lubrication system, complete with a bypass and micronic filter element, ensures proper lubrication of engine components, reducing wear and extending the engine’s lifespan.

The John Deere 4630 engine’s cooling system utilizes a centrifugal pump and thermostatic heat control to effectively regulate the engine temperature, the inclusion of a Delco-Remy electric starter ensures reliable and efficient engine starting, eliminating the hassle of manual cranking.

Transmission

The John Deere 4630 tractor offers three distinct transmission options: John Deere Syncro-Range, John Deere Quad-Range, and John Deere Power Shift. Each transmission system is designed to provide farmers with specific features and benefits, tailored to meet their diverse operational needs.

The John Deere Syncro-Range transmission is partially synchronized with a hydraulic wet disc clutch. It offers eight forward gears and two reverse gears. This transmission provides smooth and precise shifting. With a forward speed of 28.5 km/h (17.7 mph) and a reverse speed of 9.5 km/h (5.9 mph), the Syncro-Range transmission ensures optimal control and maneuverability in the field.

The John Deere Quad-Range transmission is a partially power-shifted system with a hydraulic wet disc clutch. It features an impressive sixteen forward gears and six reverse gears. This transmission empowers farmers with exceptional flexibility and control, enabling seamless transitions between different field conditions and tasks.

The John Deere Power Shift transmission is a full power-shift system with a hydraulic wet disc clutch. It offers eight forward gears and four reverse gears. This transmission incorporates advanced shifting technology, enabling quick and effortless gear changes. It provides operators with a smooth and responsive experience, enhancing productivity and reducing operator fatigue during long working hours.

Hydraulic System

The hydraulic system of the John Deere 4630 tractor is a crucial component that contributes to its versatility and performance in various agricultural tasks. The tractor is equipped with a closed-center hydraulic system, which ensures efficient power delivery and control.

The closed-center hydraulic system of the John Deere 4630 tractor operates by maintaining constant pressure within the hydraulic system, even when there is no demand for hydraulic power. This design allows for quick and precise response when hydraulic functions are engaged, resulting in enhanced efficiency and productivity. The tractor’s hydraulic system features the capability to accommodate one to three hydraulic valves. These hydraulic valves provide flexibility for connecting and controlling various hydraulic functions, such as lift arms, hydraulic remotes, or other hydraulic attachments.

With a hydraulic capacity of 60.0 liters (63.4 US qt, 52.79 Imp qt), the John Deere 4630 tractor offers ample hydraulic fluid storage. This generous hydraulic capacity ensures an adequate supply of hydraulic fluid, contributing to the smooth and consistent operation of hydraulic functions.

List Of Serial Number

The serial number plate can be found on the right side, above the PTO shaft at the rear of the JD4630 tractor.

The serial number of the tractor is written adjacent to the year of its manufacture:

• 1973: 1000
• 1974: 7022
• 1975: 11717
• 1976: 18392
• 1977: 25794

Other General Features

The John Deere 4630 tractor comes packed with a range of mechanical features designed to enhance agricultural efficiency and operator comfort. The inclusion of full-power hydrostatic power steering ensures precise maneuverability, allowing farmers to navigate through fields and around obstacles with ease.

The full-power wet disc differential brakes offer reliable stopping power and control, promoting safe operation in various conditions. The Sound-Gard cab provides operators with a comfortable and ergonomic workspace, equipped with air-conditioning to combat the rigors of working in harsh climates. Furthermore, the 4630 boasts a substantial 246-liter (65 US gal.; 54.1 Imp. gal) fuel tank, reducing the need for frequent refueling and increasing overall productivity.

Pros and Cons

Here are some factual pros and cons considering the overall John Deere 4630 Tractor.

Pros Of John Deere 4630 Tractor

• The John Deere 4630 tractor is known for its robust engine and high horsepower, providing ample power to handle demanding tasks in the field. It offers excellent performance in terms of speed, acceleration, and pulling capacity.
• This tractor model offers a wide range of applications due to its compatibility with various implements and attachments. It can be used for tasks like plowing, tilling, planting, harvesting, and hauling, making it suitable for diverse agricultural operations.
• It includes features like GPS guidance, automated controls, precision farming capabilities, and advanced monitoring systems, enabling precise operations and data management.
• The tractor is designed with operator comfort in mind. It offers a spacious and ergonomic cabin with adjustable seating, good visibility, and well-placed controls. This contributes to reduced operator fatigue during long working hours.

Cons Of John Deere 4630 Tractor

• The John Deere 4630 tractor is a high-end machine, which means it comes with a substantial price tag. It might not be the most affordable option for budget-conscious buyers or small-scale farmers.
• Due to its advanced technology and features, the 4630 tractor may have a steeper learning curve for operators who are not familiar with modern agricultural equipment. It may require training and practice to fully utilize its capabilities.

Price Of John Deere 4630 Tractor

The original price of the John Deere 4630 tractor was $27,080 in 1977. The price of a used tractor can depend upon the condition of its engine and other mechanical components.

Conclusion

The John Deere 4630 tractor is a powerful and versatile machine designed to meet the demands of modern agriculture. With its robust engine, high horsepower, and compatibility with various implements, it offers exceptional performance across a wide range of tasks. The incorporation of advanced technology enhances productivity and efficiency, while the comfort and ergonomic design prioritize operator well-being. However, it’s important to consider factors such as the initial cost, maintenance requirements, and potential limitations in maneuverability.