John Deere 4630
Power
166 hp[P] hp
Production
1973-1977
Engine
Aftercooled turbocharged diesel, 6-cylinder
Transmission
John Deere Syncro-Range
Weight
16250 lbs [7371 kg]
Drive
2WD/4WD
From the same series:
Introduction
John Deere 4630 Row-Crop Tractor
The John Deere 4630 is a row-crop tractor produced between 1973 and 1977 in Waterloo, Iowa. It served as a high-capacity machine for large-scale agricultural operations, featuring a 6-cylinder diesel engine and various transmission configurations.
Engine and Performance
The tractor is powered by a 404 cubic-inch (6.6 L) 6-cylinder diesel engine equipped with a turbocharger and aftercooler. It produces 166 horsepower at a rated engine speed of 2200 RPM. The engine features a liquid-cooling system with a 34.1-liter capacity and utilizes ether injection for cold-weather starting. The compression ratio is set at 16.0:1.
Transmission and Drivetrain
Three transmission options were available: the 8-speed partially synchronized Syncro-Range, the 16-speed partial power shift Quad-Range, and the 8-speed full power shift. All variants utilize a hydraulic wet disc clutch. The machine was offered in both 4x2 2WD and 4x4 HFWD configurations, supported by planetary final drives and a hydro-mechanical rear differential lock.
Hydraulics and PTO
The 4630 utilizes a closed-center hydraulic system capable of managing one to three valves. It is equipped with an independent rear PTO operating at 1000 RPM (1.375-inch shaft). The rear hitch is a category III/IIIN type with a lift capacity of 5,260 lbs (2,385 kg), allowing for the operation of heavy implements.
Operator Environment and Dimensions
The tractor features the Sound-Gard cab, which included air conditioning as a standard specification, providing a significant improvement in operator comfort for the era. With a wheelbase of 112.65 inches and an operating weight of 16,250 lbs (7,371 kg), the machine provides a stable platform for field work. The rear axle features rack-and-pinion adjustment to accommodate various row spacings.
Conclusion
The John Deere 4630 represents a period of significant technological advancement in row-crop tractors, balancing high-output engine performance with operator comfort through the Sound-Gard cab. It remains a capable machine for heavy-duty field tasks, suitable for collectors and operators requiring robust mechanical reliability.
Production Information of John Deere, 4630
- Original price was $27,080 in 1977
- Row-Crop tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 4630
| Wheelbase | 112.65 inches [286 cm] |
|---|---|
| Rear tread | 60 to 105.6 inches [152 to 268 cm] |
| Front tread | 72 to 88 inches [182 to 223 cm (4WD)] |
| Height (cab) | 116.9 inches [296 cm] |
| Clearance (drawbar) | 15.4 inches [39 cm] |
| Rear tread | 60 to 118 inches [152 to 299 cm] |
| Height (steering wheel) | 93.6 inches [237 cm] |
| Rack-and-pinion rear axle | 3.62 by 118 inches [91 by 2997 mm] |
| Rack-and-pinion rear axle | 3.62 by 96 inches [91 by 2438 mm] |
| Operating weight | 16250 lbs [7371 kg] |
| Clearance (rear axle) | 28.1 inches [71 cm] |
| Length | 171.2 inches [434 cm] |
| Front tread | 64 to 95.6 inches [162 to 242 cm] |
| Clearance (front axle) | 24.9 inches [63 cm] |
| Rack-and-pinion rear axle | 3.62 by 108 inches [91 by 2743 mm] |
| Rear tread | 60 to 128.3 inches [152 to 325 cm] |
| Front tread | 56 to 83.6 inches [142 to 212 cm] |
| Rack-and-pinion rear axle | 3.94 by 118 inches [100 by 2997 mm] |
| Ag front | 10.00-16 |
|---|---|
| Ag front(optional) | 9.50-20 |
| Ag front(optional) | 11.00-16 |
| Ag rear | 18.4-38 |
| Ag rear | 24.5-32 |
| Ag front | 14L-16A |
Engine Specifications of John Deere, 4630
- John Deere
- Liquid-cooled inline horizontal-shaft
- 6-cylinder
- Aftercooled turbocharged diesel
| Coolant capacity | 36 qts [34.1 L] |
|---|---|
| Oil capacity | 17 qts [16.1 L] |
| Pre-heating | Ether injection |
| Rated RPM | 2200 |
| Compression | 16.0:1 |
| Displacement | 404 ci [6.6 L] |
| Air cleaner | Dry with secondary element |
| Air cleaner(optional) | Coolant heater |
| Bore/Stroke | 4.25x4.75 inches [108 x 121 mm] |
| Starter volts | 12 |
| Starter | Electric |
| Firing order | 1-5-3-6-2-4 |
Transmission Information of John Deere, 4630
Transmission variants 1
- Four shift stations with two gears each, plus reverse gear in the first two shift stations. Tractor must be stopped, and clutch used, to shift between stations. Once in a shift station the tractor may be shifted on the move, using the clutch, between the gears in that station.
| Transmission | John Deere Syncro-Range |
|---|---|
| Clutch | Hydraulic wet disc |
| Type | Partially synchronized |
| Gears | 8 forward and 2 reverse |
Transmission variants 2
- Four gears (1-4) in four ranges (A-D). Power shift between gears 1-2 and 3-4 in each range with a synchronized shift (using clutch) between 2-3. Tractor must be stopped to shift range.
| Transmission | John Deere Quad-Range |
|---|---|
| Clutch | Hydraulic wet disc |
| Type | Partial power shift |
| Gears | 16 forward and 6 reverse |
Transmission variants 3
| Transmission | John Deere Power Shift |
|---|---|
| Clutch | Hydraulic wet discs |
| Type | Full power shift |
| Gears | 8 forward and 4 reverse |
- 8-speed partially synchronized
- 16-speed partial power shift
- 8-speed full power shift
Mechanical Specs of John Deere, 4630
- Sound-Gard cab with air-conditioning standard.
- Power steering
- Differential hydraulic wet disc brakes
| Drive | 4x2 2WD |
|---|---|
| Differential lock | Hydro-mechanical rear |
| Differential lock(optional) | 4x4 HFWD 4WD |
| Final drives | Planetary |
Power Information of John Deere, 4630
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 (1.375) |
Hydraulics Specifications of John Deere, 4630
| Type | Closed center |
|---|---|
| Valves | 1 to 3 |
Three-Point Hitch of John Deere, 4630
| Rear Type | III/IIIN |
|---|---|
| Rear lift | 5260 lbs [2385 kg] |
Electrical System of John Deere, 4630
| Ground | Negative |
|---|---|
| Battery volts | 6 |
| Charging system | Alternator |
| Batteries | 2 |
Where it sits
With 166 hp[P] HP, the John Deere 4630 sits between 4620 (150 HP) and 4640 (172 HP) in John Deere's range. Its power puts it in the 86th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the John Deere 4630 have?
The John Deere 4630 delivers 166 hp[P] HP.
What years was the John Deere 4630 produced?
The John Deere 4630 was produced in 1973-1977.
What engine does the John Deere 4630 have?
The John Deere 4630 is powered by a Aftercooled turbocharged diesel, 6-cylinder engine.
What transmission does the John Deere 4630 use?
The John Deere 4630 uses a John Deere Syncro-Range transmission.
How much does the John Deere 4630 weigh?
The John Deere 4630 weighs 16250 lbs [7371 kg].
Is the John Deere 4630 4WD?
The John Deere 4630 is available in 2WD/4WD.