| Manufacturer | John Deere |
| Price | 27,080(USD) |
| Model | 4630 |
| Equipment Type | Row-Crop Tractors |
| Factory | Waterloo, Iowa, USA |
NEBRASKA TRACTOR TEST 1113 2
| Description | Diesel Power Shift 2WD October 13 - 24, 1972 Link: Nebraska Tractor Test 1113 file PTO performance Drawbar performance Gear 4 used for power test Gear 3 used for pull test |
| Power at rated engine speed | 150.66hp / 112.3kW |
| Fuel use | 9.6gal/hour / 36.3l/hour |
| Max power | 127.92hp / 95.4kW |
| Max pull | 14,478lbs / 6567kg |
JOHN DEERE 4630 POWER
| PTO (claimed) | 150hp / 111.9kW |
| Drawbar (tested) | 127.92hp / 95.4kW |
| PTO (tested) | 150.66hp / 112.3kW |
ENGINE DETAIL
The John Deere 4630 features a robust 6-cylinder, 404ci aftercooled turbocharged diesel engine, ideal for heavy-duty agricultural tasks with its 16:1 compression ratio enhancing efficiency. Its liquid-cooled system and ether injection coolant heater facilitate reliable cold starts, particularly beneficial in low-temperature conditions. However, the relatively high oil (17 qts) and coolant (36 qts) capacities may necessitate careful monitoring to avoid maintenance challenges during routine servicing.
| Description | John Deere aftercooled turbocharged diesel 6-cylinder liquid-cooled inline horizontal-shaft |
| Displacement | 404ci / 6.6L |
| Bore/Stroke | 4.25x4.75inches / 108x 121mm |
| Air cleaner | dry with secondary element |
| Pre-heating | ether injection coolant heater |
| Compression | 16.0:1 |
| Rated RPM | 2200 |
| Firing order | 1-5-3-6-2-4 |
| Starter | electric |
| Starter volts | 12 |
| Oil capacity | 17qts / 16.1L |
| Coolant capacity | 36qts / 34.1L |
JOHN DEERE 4630 ENGINE
The John Deere 4630, powered by a robust 6.6L 6-cylinder diesel engine, offers significant torque and durability, making it suitable for heavy agricultural tasks. Its 65-gallon fuel tank enhances operational efficiency, allowing longer runtimes between refueling, which is advantageous for large-scale farming operations. However, the weight and size of the tractor may present challenges in specific terrains, requiring careful navigation in confined spaces.
| Description | John Deere 6.6L 6-cyl diesel |
| Fuel tank | 65gal / 246.0L |
TRANSMISSIONS OVERVIEW
The John Deere 4630 features an 8-speed partially synchronized transmission and an optional 16-speed partial power shift, allowing for versatile gear selection and improved efficiency during varying field operations. The full power shift option offers seamless gear changes under load, enhancing productivity in demanding tasks. However, potential challenges include maintenance complexity in the transmission system, which can increase downtime if issues arise.
| Description | 8-speed partially synchronized 16-speed partial power shift 8-speed full power shift |
TRANSMISSION 1
The John Deere 4630 features a partially synchronized Syncro-Range transmission with 8 forward and 2 reverse gears, facilitating smoother shifts within shift stations while requiring the tractor to be stopped for inter-station changes. The hydraulic wet disc clutch enhances durability and reduces wear, though the necessity to stop for shifting between stations may limit operational efficiency in fast-paced tasks. Ideal for diverse agricultural applications, the transmission provides a balance of versatility and control, albeit with a learning curve for optimal gear management.
| Transmission | John Deere Syncro-Range |
| Type | partially synchronized |
| Gears | 8 forward and 2 reverse |
| Clutch | hydraulic wet disc |
| Description | 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 |
SPEEDS 1
| Description | With 18.4-38 rear tires |
TRANSMISSION 2
The John Deere 4630 features a Quad-Range transmission with 16 forward and 6 reverse gears, optimizing torque and speed for various applications. The partial power shift allows for smoother transitions between gears while requiring a clutch during synchronized shifts, which can enhance operational efficiency, particularly in fieldwork scenarios. However, the necessity of stopping to shift ranges may impact productivity in dynamic environments where frequent adjustments are required.
| Transmission | John Deere Quad-Range |
| Type | partial power shift |
| Gears | 16 forward and 6 reverse |
| Clutch | hydraulic wet disc |
| Description | 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 3
The John Deere 4630 features a full power shift transmission, enabling seamless gear changes without interrupting power delivery, which enhances productivity in demanding operations. With 8 forward and 4 reverse gears, it offers a versatile speed range suitable for various field tasks, while the hydraulic wet disc clutch provides smooth engagement and longevity under heavy loads. However, maintenance can be complex due to the hydraulic system, requiring specialized knowledge for repairs and adjustments.
| Transmission | John Deere Power Shift |
| Type | full power shift |
| Gears | 8 forward and 4 reverse |
| Clutch | hydraulic wet discs |
SPEEDS 2
| Description | With 18.4-38 rear tires |
MECHANICAL
The John Deere 4630 offers versatile drivetrain options with 4x2, 4x4, and HFWD configurations, allowing for better traction and adaptability across various terrains. Its hydro-mechanical differential lock enhances control and performance in challenging conditions, while the planetary final drives contribute to improved torque and stability. The Sound-Gard cab with air conditioning provides operator comfort, making it suitable for extended working hours, though the complexity of its transmission options may require more maintenance and operator skill.
| Chassis | 4x2 2WD/4x4 HFWD 4WD |
| Final drives | planetary |
| Differential lock | hydro-mechanical rear |
| Steering | power |
| Brakes | differential hydraulic wet disc |
| Cab | Sound-Gard cab with air-conditioning standard |
| Transmissions | 8-speed partially synchronized 16-speed partial power shift 8-speed full power shift |
HYDRAULICS
| Type | closed center |
| Valves | 1 to 3 |
TRACTOR HITCH
| Rear Type | III/IIIN |
| Rear lift | 5260lbs / 2385kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 1000 (1.375) |
JOHN DEERE 4630 TIRES
The John Deere 4630 features a robust tire configuration with Ag front tires (14L-16A) providing good flotation and maneuverability, while the Ag rear tires (24.5-32 or 20.8-38) enhance traction on varied terrains. This setup is advantageous for fieldwork and heavy loads, improving stability and reducing soil compaction. However, operators should be aware of potential challenges in tight spaces or uneven ground due to the wider rear tire options affecting turning radius.
| Ag front | 14L-16A |
| Ag rear | 24.5-32/20.8-38 |
DIMENSIONS
| Wheelbase | 112.65inches / 286cm |
| Length | 171.2inches / 434cm |
| Height (steering wheel) | 93.6inches / 237cm |
| Height (cab) | 116.9inches / 296cm |
| Operating weight | 16250lbs / 7371kg |
| Clearance (front axle) | 24.9inches / 63cm |
| Clearance (rear axle) | 28.1inches / 71cm |
| Clearance (drawbar) | 15.4inches / 39cm |
| Rear axle | Rack-and-pinion: 3.94 by 118inches / 100by 2997mm |
| Front tread | 72 to 88inches / 182to 223cm (4WD) |
| Rear tread | 60 to 128.3inches / 152to 325cm |
DIMENSIONS & TIRES
The John Deere 4630's 112.65-inch wheelbase enhances stability, particularly during field operations, which is beneficial for maintaining traction on uneven terrain. Weighing 16,250 lbs and equipped with 18.4-38 rear tires, it offers good weight distribution for heavy-duty pulling tasks, although it may face challenges in maneuverability in tight spaces due to its size. The combination of front 10.00-16 tires and rear 18.4-38 tires indicates a balance of flotation and grip, making it suitable for a variety of agricultural applications, yet potential tire compatibility issues should be assessed for specific tasks.
| Wheelbase | 112.65inches / 286cm |
| Weight | 16250lbs / 7371kg |
| Front tire | 10.00-16 |
| Rear tire | 18.4-38 |
JOHN DEERE 158 LOADER
| Loader weight | 1,771lbs / 803kg |
| Height (to pin) | 156inches / 396cm |
| Clearance, dumped bucket | 132inches / 335cm |
| Dump reach | 32inches / 81cm |
| Dump angle | 37° |
| Rollback angle | 12° |
| Breakout force (lift) | 5,000lbs / 2268kg |
| Lift to full height (at pin) | 3,800lbs / 1723kg |
| Bucket capacity | 0.5cu yd / 0.4cu m 0.6cu yd / 0.5cu m 0.8cu yd / 0.6cu m 0.9cu yd / 0.7cu m |
| Bucket width | 60inches / 152cm 72inches / 182cm 84inches / 213cm 96inches / 243cm |
4630 SERIAL NUMBERS
| Location | Serial number plate on the rear of the John Deere 4630, right side, above the PTO shaft |
| 1973 | 1000 |
| 1974 | 7022 |
| 1975 | 11717 |
| 1976 | 18392 |
| 1977 | 25794 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Batteries | 2 |
| Battery volts | 6 |