John Deere 8440
The John Deere 8440 is a tractor produced by John Deere. It is equipped with a 466 ci 7.6 L engine. The listed engine power is Diesel (listed): 215 hp / 160.3 kW. Transmission: John Deere Quad-Range. Operating weight: 26,590 lbs 12061 kg.
Engine Power
Diesel (listed): 215 hp / 160.3 kW
Fuel & Capacities
156 gal
590.5 L
Transmission
John Deere Quad-Range
Operating Weight
26,590 lbs*With 20.8-38 duals.
12061 kg
Overview
 | 1979 - 1982
Iron Horses SeriesFour-wheel Drive (4WD) tractor
Iron Horses Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | John Deere |
Four-wheel Drive (4WD) tractor | |
Built in Waterloo, Iowa, USA | |
Original price was $64,000 in 1982 | |
John Deere 8440 Engine | |
|---|---|
John Deere 7.6L 6-cyl diesel | |
Engine details ...  |
John Deere 8440 Transmission | |
|---|---|
16-speed partial power shift | |
Transmission details ...  |
John Deere 8440 Power | |
|---|---|
Engine | 215 hp
160.3 kW |
PTO (claimed) | 175 hp
130.5 kW |
Drawbar (tested) | 160.58 hp
119.7 kW |
PTO (tested) | 179.83 hp
134.1 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Differential lock | hydraulic front and rear |
Articulated power steering | |
Hydraulic wet disc brakes | |
Cab standard. | |
Capacity | |
|---|---|
Fuel | 156 gal
590.5 L |
Hydraulic system | 40 gal
151.4 L |
Hydraulics | |
|---|---|
Type | closed center |
Capacity | 40 gal
151.4 L |
Valves | 2 |
Pump flow | 33 gpm
124.9 lpm |
Tractor hitch | |
|---|---|
Rear Type | III |
Rear lift | 8545 lbs
3876 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 125 inches
317 cm |
Weight | 26,590 lbs
12061 kg |
Front tire | 18.4-34 |
Rear tire | 18.4-34 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 90 |
Batteries | 2 |
Battery CCA | 850 |
Battery volts | 6 |
References | |
|---|---|
 | |
Explore Discover Deere '79 published in 1979, by John Deere | |
Move up to John Deere... published in 1981 |
Engine
Engine Detail — 466 ci / 7.6 L Diesel
Manufacturer | John Deere |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 466 ci
7.6 L |
Bore/Stroke | 4.5625x4.75 inches
116 x 121 mm |
Power | 215 hp
160.3 kW |
Compression | 15.5:1 |
Rated RPM | 2100 |
Idle RPM | 800-2300 |
Operating RPM | 1500-2100 |
Firing order | 1-5-3-6-2-4 |
Starter volts | 12 |
Oil capacity | 22 qts
20.8 L |
Coolant capacity | 40 qts
37.9 L |
Transmission
Transmission — John Deere Quad-Range
Transmission | John Deere Quad-Range |
Type | partial power shift |
Gears | 16 forward and 6 reverse |
Clutch | hydraulic wet disc |
Oil capacity | 160 qts
151.4 L |
Four gears (1-4) in four ranges (A-D). Tractor must be stopped to select range. Power shift between gears 1-2 and 3-4 within range. | |
With 18.4-38 tires. | |
 | |
Dimensions
John Deere 8440 Tires | |
|---|---|
Ag front | 18.4-34 |
Ag rear | 18.4-34 |
Dimensions | |
|---|---|
Wheelbase | 125 inches
317 cm |
Length | 223.5 inches
567 cm |
Operating weight | 26,590 lbs*With 20.8-38 duals.
12061 kg |
Ground clearance | 19.4 inches
49 cm |
Front axle | Rack-and-pinion: 3.937 by 95.8 inches
99 by 2433 mm |
Front axle | Rack-and-pinion: 3.937 by 118.4 inches
99 by 3007 mm |
Rack-and-pinion rear axle | 3.937 by 95.8 inches
99 by 2433 mm |
Rack-and-pinion rear axle | 3.937 by 118.4 inches
99 by 3007 mm |
Front tread | 63 to 130 inches
160 to 330 cm |
Rear tread | 63 to 130 inches
160 to 330 cm |
John Deere 8440 Height | |
|---|---|
Hood | 87.1 inches
221 cm |
Cab | 126.6 inches
321 cm |
Exhaust | 134.5 inches
341 cm |
Tests
Nebraska Tractor Test 1323 | |
|---|---|
Diesel 16-speed 4WD
September 10, 1979 - September 15, 1949
Link: Nebraska Tractor Test 1323 file | |
PTO performance | |
Power at rated engine speed | 179.83 hp
134.1 kW |
Fuel use | 11.3 gal/hour
42.8 l/hour |
Drawbar performance | |
Max power | 160.58 hp
119.7 kW |
Fuel use | 11.2 gal/hour
42.4 l/hour |
Max pull | 25,383 lbs
11513 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for John Deere 8440 based on its 215 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 5 to 7 Bottom (18")5 - 7 铧 (45 cm) | Commercial / Field Scale | Large acreage tillage; requires front ballast weights. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙 | Commercial / Field Scale | Wide commercial field leveling; requires hydraulic remotes. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 8440.
Estimated Continuous Field Runtime: 14 hrs
Approximately 14 hours of continuous field operation at ~75% rated power on a full tank (156 gal / 590.5 L).
Estimated 75% Load Fuel Burn~11.2 gal/hr (42.3 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
John Deere 8440 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 8440.
Converted Equivalents:
Horsepower (HP)215 hp
Kilowatts (kW)160.3 kW
Metric Horsepower (PS / CV)218 PS
Direct Competitor Comparison
Compare John Deere 8440 against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 8440
Engine Power:Diesel (listed): 215 hp / 160.3 kW
★ Baseline Reference
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