John Deere 4450

1983 - 1988

50 Series

Row-Crop tractor

Manufacturer

John Deere

Row-Crop tractor

Built in Waterloo, Iowa, USA

Original price

$46,670 (1983 Quad-Range ROPS 2WD )

$67,009 (1983 Power Shift Cab 4WD )

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.

John Deere 7.6L 6-cyl diesel

Engine

158.2 hp 118.0 kW

Drawbar (claimed)

121 hp 90.2 kW

PTO (claimed)

140 hp 104.4 kW

Drawbar (tested)

120.11 hp 89.6 kW

PTO (tested)

140.43 hp 104.7 kW

Two- or four-wheel drive

Final drives

inboard planetary

Differential lock

hydraulic rear

Power steering

Hydraulic wet disc brakes

Sound-Gard cab standard. Optional four-post Roll-Gard ROPS.

Fuel

65 gal 246.0 L

Hydraulic system

10.5 gal (2WD Power Shift) 39.7 L

13.5 gal (4WD Power Shift) 51.1 L

16.0 gal (Quad-Range) 60.6 L

Type

closed center

Capacity

10.5 gal (2WD Power Shift) 39.7 L

13.5 gal (4WD Power Shift) 51.1 L

16.0 gal (Quad-Range) 60.6 L

Pressure

2277 psi 157.0 bar

Valves

2 or 3

Pump flow

26.5 gpm 100.3 lpm

Rear Type

IIIN/II

Control

lower-link draft sensing

Rear lift

6294 lbs 2854 kg

7418 lbsOptOptional 3364 kg

Rear PTO

independent

Clutch

hydraulic wet disc

Rear PTO Type

540/1000

Engine RPM

540@2200

1000@2200

2WD Wheelbase

106.7 inches 271 cm

4WD Wheelbase

105.3 inches 267 cm

Weight

12745 to 15400 pounds

Front tire

10.00-16

2WD Rear tire

18.4-38

Ground

negative

Charging system

alternator

Charging amps

72

90 *With Sound-Gard cab

Batteries

2

Battery volts

6

12 OptOptional

Loaders, Spreaders and Blades published in 1984, by John Deere

Tractors 100 to 190 HP published in 1984, by John Deere

Tractors 105 to 190 HP published in 1984, by John Deere

Row-Crop Tractors Product Information Handbook published in 1984, by John Deere

Row-Crop Tractors Product Information Handbook published in 1986, by John Deere

Mechanical Front-Wheel Drive published in 1984, by John Deere

Agricultural Price List published in 1983, by John Deere

Manufacturer

John Deere

Configuration

turbocharged diesel, 6-cylinder, liquid-cooled

Displacement

466 ci 7.6 L

Bore/Stroke

4.56x4.75 inches 116 x 121 mm

Power

158.2 hp 118.0 kW

Air cleaner

dry

Compression

15.8:1

Rated RPM

2200

Firing order

1-5-3-6-2-4

Starter volts

12

Oil capacity

18 qts 17.0 L

Coolant capacity

27 qts 25.6 L

16-speed partial power shift

15-speed full power shift

Transmission

John Deere Quad-Range

Type

partial power shift

Gears

16 forward and 6 reverse

Clutch

Perma-Clutch wet disc

Oil capacity

64 qts 60.6 L

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.

18.4-38 rear tires.

Transmission

John Deere Power Shift

Type

full power shift

Gears

15 forward and 4 reverse

Clutch

Perma-Clutch wet disc

2WD Oil capacity

42 qts 39.7 L

4WD Oil capacity

54 qts 51.1 L

Optional transmission. Full (clutchless) power shift can be made between gears, forward and reverse.

18.4-38 rear tires.

2WD Standard tires (ag)

Front: 10.00-16. Rear: 18.4-38

4WD Standard tires (ag)

Front: 14.9-26. Rear: 18.4-38

Ag rear

23.1-34

16.9-38

20.8-38

20.8R38

18.4-42

18.4R42

2WD Wheelbase

106.7 inches 271 cm

4WD Wheelbase

105.3 inches 267 cm

2WD Length

154.1 inches 391 cm

4WD Length

164.1 inches 416 cm

Width

96 inches 243 cm

109 inches (optional axle) 276 cm

119 inches (optional axle) 302 cm

Height

116.5 inches 295 cm

Shipping weight

12745 lbs 5781 kg

Operating weight

15400 lbs*Two-wheel drive tractor with cab and Power Shift. 6985 kg

Ground clearance

15.75 inches 40 cm

Rack-and-pinion rear axle

3.62 by 96 inches 91 by 2438 mm

Rack-and-pinion rear axle

3.62 by 109 inches 91 by 2768 mm

Rack-and-pinion rear axle

3.62 by 113 inches 91 by 2870 mm

NTTL 1459: diesel Power Shift 2WD

NTTL 1476: diesel Quad-Range 2WD

Diesel Power Shift 2WD October 13 - November 4, 1982 Link: Nebraska Tractor Test 1459 file

PTO performance

Power at rated engine speed

140.43 hp 104.7 kW

Fuel use

8.7 gal/hour 32.9 l/hour

Drawbar performance

Max power

117.46 hp 87.6 kW

Fuel use

8.6 gal/hour 32.6 l/hour

Gear 10 used for power test.

Max pull

15,015 lbs 6810 kg

Gear 4 used for pull test.

Diesel Quad-Range 2WD April 4 - 25, 1983 Link: Nebraska Tractor Test 1476 file

PTO performance

Power at rated engine speed

140.33 hp 104.6 kW

Fuel use

8.6 gal/hour 32.6 l/hour

Drawbar performance

Max power

120.11 hp 89.6 kW

Fuel use

8.3 gal/hour 31.4 l/hour

Max pull

15,069 lbs 6835 kg

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