| Manufacturer |
John Deere |
| Price |
53,000(USD) |
| Model |
8630 |
| Equipment Type |
Four-wheel Drive 4WD Tractors |
| Factory |
Waterloo, Iowa, USA |
NEBRASKA TRACTOR TEST 1180 2
| Description |
Diesel Quad-Range 4WD June 3 - 11, 1975 Link: Nebraska Tractor Test 1180 file PTO performance Drawbar performance |
| Power at rated engine speed |
225.59hp / 168.2kW |
| Fuel use |
13.7gal/hour / 51.9l/hour |
| Max power |
198.12hp / 147.7kW |
| Max pull |
26,443lbs / 11994kg |
JOHN DEERE 8630 POWER
| Engine |
275hp / 205.1kW |
| PTO (claimed) |
225hp / 167.8kW |
| Drawbar (tested) |
198.12hp / 147.7kW |
| PTO (tested) |
225.59hp / 168.2kW |
ENGINE DETAIL
The John Deere 8630 features a robust turbocharged 6-cylinder engine with a displacement of 10.1L, providing a substantial power output of 275hp for heavy-duty applications. With a compression ratio of 15.4:1 and a dry air cleaner, it ensures efficient combustion and prolonged engine life, although maintenance of the air cleaner may be crucial for optimal performance. This tractor operates best within its rated RPM of 2100, making it suitable for both low and high-load scenarios, though frequent idling outside the recommended range could lead to wear over time.
| Description |
John Deere turbocharged diesel 6-cylinder liquid-cooled |
| Displacement |
619ci / 10.1L |
| Bore/Stroke |
5.12x5.00inches / 130x 127mm |
| Power |
275hp / 205.1kW |
| Air cleaner |
dry |
| Compression |
15.4:1 |
| Rated RPM |
2100 |
| Idle RPM |
800-2300 |
| Operating RPM |
1500-2100 |
| Starter volts |
12 |
| Coolant capacity |
44qts / 41.6L |
JOHN DEERE 8630 ENGINE
The John Deere 8630 is equipped with a robust 10.1L 6-cylinder diesel engine, delivering substantial torque and horsepower for heavy-duty applications. Pros include excellent fuel efficiency and reliability, ideal for demanding agricultural tasks. However, potential challenges may involve its size and weight, which can limit maneuverability in tighter spaces or on smaller farms.
| Description |
John Deere 10.1L 6-cyl diesel |
TRANSMISSION
The John Deere 8630 features a Quad-Range partial power shift transmission, providing smooth gear transitions with 16 forward and 4 reverse gears, allowing for efficient power management in various tasks such as plowing and tilling. The hydraulic wet disc clutch enhances durability and reduces maintenance requirements while promoting smoother operation under heavy loads. However, the complexity of the transmission might pose a challenge in terms of troubleshooting and repair for some operators.
| Transmission |
John Deere Quad-Range |
| Type |
partial power shift |
| Gears |
16 forward and 4 reverse |
| Clutch |
hydraulic wet disc |
SPEEDS
| Description |
With 18.4x34 tires |
MECHANICAL
The John Deere 8630's 4x4 articulated chassis enhances maneuverability on rough terrain, making it ideal for diverse agricultural applications. Its hydraulic power steering provides responsive handling, while the hydraulic wet disc brakes ensure reliable stopping power under heavy loads. The 16-speed partial power shift transmission allows for efficient power management, making it suitable for high-torque tasks, though operators may need time to adapt to its shifting characteristics.
| Chassis |
4x4 articulated 4WD |
| Steering |
hydraulic power |
| Brakes |
hydraulic wet disc |
| Cab |
Sound-Gard cab standard. Optional air-conditioning |
| Transmission |
16-speed partial power shift |
CAPACITY
| Fuel |
156gal / 590.5L |
| Hydraulic system |
26gal / 98.4L |
HYDRAULICS
| Type |
closed center constant pressure |
| Capacity |
26gal / 98.4L |
| Valves |
2 |
| Pump flow |
33gpm / 124.9lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
independent |
| Rear RPM |
1000 |
| Engine RPM |
2100 |
JOHN DEERE 8630 TIRES
The John Deere 8630, equipped with 18.4-34 agricultural tires front and rear, offers enhanced traction and stability, making it suitable for heavy tillage and field operations. The tire size provides a wider contact patch, improving floatation on softer soils, which can reduce soil compaction. However, the weight of the tractor combined with this tire configuration may present challenges in maneuverability on steep terrains or limited spaces.
| Ag front |
18.4-34 |
| Ag rear |
18.4-34 |
DIMENSIONS
| Wheelbase |
125inches / 317cm |
| Length |
223.5inches / 567cm |
| Width |
95.8inches / 243cm *Standard axle 118.4inches / 300cm *Long axle |
| Height (exhaust) |
134.5inches / 341cm |
| Ground clearance |
19.4inches / 49cm |
| Front axle |
3.622 by 118inches / 91by 2997mm |
| Rear axle |
3.622 by 118inches / 91by 2997mm |
JOHN DEERE 8630 WEIGHT
| Shipping |
24150lbs / 10954kg |
| Operating |
24500lbs / 11113kg |
| Ballasted |
26480lbs / 12011kg |
DIMENSIONS & TIRES
The John Deere 8630 has a 125-inch wheelbase, providing stability during heavy-duty operations, particularly in fieldwork or towing scenarios. Weighing between 24,150 to 24,500 pounds, it offers robust traction, but may pose challenges in soil compaction on softer terrains. Equipped with 18.4-34 tires front and rear, optimal performance is achieved on varied surfaces, though tire selection affects ground pressure and potential tire slip.
| Wheelbase |
125inches / 317cm |
| Weight |
24150 to 24500 pounds |
| Front tire |
18.4-34 |
| Rear tire |
18.4-34 |
8630 SERIAL NUMBERS
| Location |
Back of transmission case |
| 1975 |
1000 |
| 1976 |
2382 |
| 1977 |
5222 |
| 1978 |
7626 |
ELECTRICAL
| Ground |
negative |
| Charging system |
alternator |
| Batteries |
2 |
| Battery CCA |
975 |
| Battery volts |
6 |
