Tractor · 1983Unverified
John Deere 4450
John Deere 4450 — 50 Series · 140 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
140 hp
Max power
87.6 kW
Weight
12745 to 15400 pounds
Hover a source tag to verify
Overview
ManufacturerJohn DeereReference
Row-Crop tractorReference
Built in Waterloo, Iowa, USAReference
Original price$46,670 (1983 Quad-Range ROPS 2WD )Reference
Original price$67,009 (1983 Power Shift Cab 4WD )Reference
The John Deere 4450 was the best-selling model of the entire 50-series line of tractors. The 4450 alone accounted for 20% of sales in the line. John Deere introduced its Caster/Action front-wheel drive system on these tractors. By enabling the tractors' front wheels to angle up to 13-degrees, sharper turn angles and larger front tires could be used.Reference
Two- or four-wheel driveReference
Final drivesinboard planetaryReference
Differential lockhydraulic rearReference
Power steeringReference
Hydraulic wet disc brakesReference
Sound-Gard cab standard. Optional four-post Roll-Gard ROPS.Reference
Engine
John Deere 7.6L 6-cyl dieselReference
Engine118.0 kWReference
Drawbar (claimed)90.2 kWReference
Drawbar (tested)89.6 kWReference
John DeereReference
turbocharged dieselReference
6-cylinderReference
liquid-cooledReference
Displacement7.6 LReference
Bore/Stroke116 x 121 mmReference
Power118.0 kWReference
Air cleanerdryReference
Compression15.8:1Reference
Rated RPM2200Reference
Firing order1-5-3-6-2-4Reference
Starter volts12Reference
Oil capacity17.0 LReference
Coolant capacity25.6 LReference
Power at rated engine speed104.7 kWReference
Max power87.6 kWReference
Power at rated engine speed104.6 kWReference
Max power89.6 kWReference
Transmission
16-speed partial power shiftReference
15-speed full power shiftReference
TransmissionJohn Deere Quad-RangeReference
Typepartial power shiftReference
Gears16 forward and 6 reverseReference
ClutchPerma-Clutch wet discReference
Oil capacity60.6 LReference
Tractor must be stopped to select one of four ranges. Clutchless power shift between speeds 1-2 and 3-4 in range. A synchronized shift (using clutch) can be made between 2 and 3 in range.Reference
TransmissionJohn Deere Power ShiftReference
Typefull power shiftReference
Gears15 forward and 4 reverseReference
2WD Oil capacity39.7 LReference
4WD Oil capacity51.1 LReference
Optional transmission. Full (clutchless) power shift can be made between gears, forward and reverse.Reference
PTO & Hydraulics
PTO (claimed)104.4 kWReference
PTO (tested)104.7 kWReference
Hydraulic system39.7 LReference
Hydraulic system51.1 LReference
Hydraulic system60.6 LReference
Typeclosed centerReference
Capacity39.7 LReference
Capacity51.1 LReference
Capacity60.6 LReference
Pressure157.0 barReference
Valves2 or 3Reference
Pump flow100.3 lpmReference
Rear TypeIIIN/IIReference
Controllower-link draft sensingReference
Rear lift2854 kgReference
Rear lift3364 kgReference
Rear PTOindependentReference
Clutchhydraulic wet discReference
Rear PTO Type540/1000Reference
Engine RPM540@2200Reference
Engine RPM1000@2200Reference
Capacities
Fuel246.0 LReference
Dimensions
2WD Wheelbase271 cmReference
4WD Wheelbase267 cmReference
Weight12745 to 15400 poundsReference
Front tire10.00-16Reference
2WD Rear tire18.4-38Reference
2WD Standard tires (ag)Front: 10.00-16. Rear: 18.4-38Reference
4WD Standard tires (ag)Front: 14.9-26. Rear: 18.4-38Reference
Ag rear23.1-34Reference
Ag rear16.9-38Reference
Ag rear20.8-38Reference
Ag rear20.8R38Reference
Ag rear18.4-42Reference
Ag rear18.4R42Reference
2WD Length391 cmReference
4WD Length416 cmReference
Width243 cmReference
Width276 cmReference
Width302 cmReference
Height295 cmReference
Shipping weight5781 kgReference
Operating weight6985 kgReference
Ground clearance40 cmReference
Rack-and-pinion rear axle91 by 2438 mmReference
Rack-and-pinion rear axle91 by 2768 mmReference
Rack-and-pinion rear axle91 by 2870 mmReference
John Deere 4450 attachments
front-end loaderReference
4450 Serial Number Location
Serial number plate on rear of tractor.Reference
4450 Serial Numbers
19831000Reference
198411001Reference
198518001Reference
198622001Reference
198724001Reference
198826001Reference
198931001Reference
FAQ: How to read a serial number table.Reference
Electrical
GroundnegativeReference
Charging systemalternatorReference
Charging amps72Reference
Charging amps90Reference
Batteries2Reference
Battery volts6Reference
Battery volts12Reference
Attachment overview
John Deere 158 loaderReference
John Deere 265 loaderReference
John Deere 280 loaderReference
Test results
NTTL 1459: diesel Power Shift 2WDReference
NTTL 1476: diesel Quad-Range 2WDReference
Diesel Power Shift 2WDOctober 13 - November 4, 1982Link: Nebraska Tractor Test 1459 fileReference
PTO performanceReference
Fuel use32.9 l/hourReference
Drawbar performanceReference
Fuel use32.6 l/hourReference
Gear 10 used for power test.Reference
Max pull6810 kgReference
Gear 4 used for pull test.Reference
Diesel Quad-Range 2WDApril 4 - 25, 1983Link: Nebraska Tractor Test 1476 fileReference
Fuel use31.4 l/hourReference
Max pull6835 kgReference
Speeds
18.4-38 rear tires.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.