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Tractor · 1983Unverified

John Deere 4450

Name: John Deere 4450
Brand: John Deere

John Deere 4450 — 50 Series · 140 hp. Reference specifications; pending source verification.

The John Deere 4450 is a tractor with a rated power output of 140 hp, positioning it among the higher-powered machines in its class. Manufactured from 1983 to 1988, this tractor is powered by a 6-cylinder turbocharged diesel liquid-cooled engine and features a powershift transmission driving through four-wheel drive. The listed weight of the 4450 is between 12745 and 15400 pounds. It is suited to tasks covering approximately 200–800 acres.

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

Catalogue coverage

Variants represented

Richest spec table

129 rows

Recorded power

140 hp

Recorded weight

5781 kg

Transmissions

16-speed partial power shift

Production years

1983-1988

Verified variants

1 linked source document displayed

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.

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