John Deere 4630

The John Deere 4630 epitomizes 1970s tractor innovation, boasting robust power, mechanical reliability, and operator comfort. Its turbocharged diesel engine, versatile transmission options, and advanced hydraulic system ensure efficiency and performance in the field. Equipped with features like power steering and a Sound-Gard cab, it prioritizes operator comfort and safety. Whether tackling tough terrain or handling various implements, the 4630 offers precision and power, making it a staple on farms across America. As a collectible, it symbolizes a significant era in agricultural history, cherished for its contribution to farming excellence and its enduring legacy of reliability and durability.

John Deere 4630 Tractor Specifications
TypeRow-Crop tractor
Built inWaterloo, Iowa, USA
Original Price (1977)$27,080
Power
PTO (claimed)150 hp (111.9 kW)
Drawbar (tested)127.92 hp (95.4 kW)
PTO (tested)150.66 hp (112.3 kW)
Mechanical
Drive4×2 2WD, 4×4 HFWD 4WD
Final DrivesPlanetary
Differential LockHydro-mechanical rear
Engine Specs
Engine ModelJohn Deere
Engine TypeSix-cylinder direct injection turbocharged diesel
Displacement404 cu in (6.60 L)
Bore/Stroke4.25×4.78 inches (108.0×121.0 mm)
AspirationTurbocharged
Rated Engine Power166 hp (123.0 kW) @ 2200 rpm
Compression16.0:1
Fuel SystemDirect injection
Air CleanerDry with secondary element
Fuel Tank Capacity65 gal (246.0 L)
Oil Capacity17 qts (16.0 L)
Coolant Capacity30 qts (28.5 L)
Electrical System Rating12 Volts
Charging SystemAlternator, 37/55 Amps
Power Take-Off (PTO)
PTO Operational TypeIndependent
PTO Horsepower150 hp (112.0 kW)
PTO Speed1000 rpm
PTO / Engine Speed1000/2200 rpm
PowerShift Transmission
Gearbox Type8F/4R, Full power shift
Forward Gears8
Reverse Gears4
Maximum Forward Speed17.7 mph (28.5 kph)
Maximum Reverse Speed6.0 mph (9.5 kph)
ClutchHydraulic wet disc
Oil Capacity40 qts (38.0 L)
Syncro Range Transmission
Gearbox Type8F/2R, Partially synchronized
Forward Gears8
Reverse Gears2
Maximum Forward Speed18.8 mph (30.2 kph)
Maximum Reverse Speed6.6 mph (10.6 kph)
Clutch TypeHydraulic wet disc
Oil Capacity44 qts (41.5 L)
Quad-Range Transmission
Gearbox Type16F/6R, Partial powershift
Forward Gears16
Reverse Gears6
Maximum Speed (Forward)17.7 mph (28.6 kph)
Maximum Speed (Reverse)11.2 mph (18.0 kph)
ClutchHydraulic wet disc
Oil Capacity44 qts (41.5 L)
Wheels and Tires
Drive Wheels2WD/4WD
Steering ConfigurationFront Steer
Steering SystemPower
Front Tire Size10.0×16
Rear Tire Size18.4×38
Rear Track Width60-90 inches (1520-2280 mm)
Hydraulics and Hitch
Hydraulic System TypeClosed center
Implement Pump Flow22 gpm (83.5 Lpm)
Hydraulic Pressure155 Bar (2250 psi)
Hydraulic Capacity11 gal (42.0 L)
Number of Standard Remote Valves1/3
3-Point Hitch Category3/3N
Rear Lift Capacity5260 lbs (2385 kg)
Dimensions and Weight
Wheelbase112 inches (2840 mm)
Length162 inches (4100 mm)
Overall Width91 inches (2300 mm)
Height (ROPS)110 inches (2780 mm)
Height (Cab)127 inches (3210 mm)
Operating Weight16250 lbs (7370 kg)
John Deere 4630 Overview

The John Deere 4630, a member of the Generation II Series, epitomizes the pinnacle of tractor technology during the 1970s. Proudly manufactured in Waterloo, Iowa, USA, this row-crop tractor boasts impressive power and mechanical prowess. Its robust engine, a turbocharged six-cylinder diesel, delivers a claimed 150 horsepower, ensuring formidable performance in the field. Equipped with PowerShift transmission, offering 8 forward and 4 reverse gears, or optionally available with Syncro Range or Quad-Range transmissions, it provides versatility and precision for various tasks. The inclusion of hydro-mechanical rear differential lock and differential hydraulic wet disc brakes enhances traction and safety, especially in challenging terrains.
The John Deere 4630’s mechanical design exudes reliability and efficiency. Its planetary final drives and power steering system contribute to smooth operation and maneuverability, reducing operator fatigue during long working hours. The tractor’s Sound-Gard cab, complete with air-conditioning as standard, offers a comfortable and ergonomic workspace, shielding the operator from noise and adverse weather conditions. This attention to operator comfort and safety underscores John Deere’s commitment to enhancing the user experience.

Hydraulically, the 4630 is a workhorse, featuring a closed-center hydraulic system with ample pump flow and pressure for powering implements. With its impressive rear lift capacity of 5260 lbs and multiple standard remote valves, it accommodates a wide range of implements and attachments, making it indispensable on the modern farm. Additionally, its 2WD/4WD drive configuration, coupled with front steer and power steering, ensures superior control and traction, enabling precise maneuvering and minimizing soil compaction.

For collectors and enthusiasts, the John Deere 4630 represents a cherished piece of agricultural history. Its iconic design, coupled with its significant role in shaping farming practices during the 1970s, makes it a highly sought-after collectible. The tractor’s enduring legacy as a symbol of American ingenuity and progress further adds to its appeal. Whether in the field or on display, the John Deere 4630 continues to captivate audiences with its blend of power, performance, and nostalgia, reminding us of a bygone era of farming excellence.v

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