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John Deere 4450

John Deere 4450 tractor
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The John Deere 4450 was produced from 1983 to 1988 as part of the 50 Series row-crop tractors. It was the best-selling model of the 50-series line, accounting for 20% of sales. It introduced the Caster/Action front-wheel drive system allowing sharper turns and larger front tires. It features a 7.6L 6-cylinder diesel engine producing 158.2 hp, with transmission options including a 16-speed partial power shift and a 15-speed full power shift. The tractor offers two- or four-wheel drive, hydraulic wet disc brakes, and a Sound-Gard cab. It has a fuel capacity of 65 gallons and a hydraulic system capacity varying by transmission type. The tractor supports various loaders and attachments, with detailed specifications for each loader model.
John Deere 4450tractorspecificationsenginetransmissionhydraulicsattachmentsrow-crop tractor50 series
Power158 hp
Founded1983 - 1988
Model4450

Technical Specifications

Detailed specifications and technical data for John Deere 4450

Power

Engine:158.2 hp (118.0 kW)
PTO (tested):140.43 hp (104.7 kW)
PTO (claimed):140 hp (104.4 kW)
Drawbar (tested):120.11 hp (89.6 kW)
Drawbar (claimed):121 hp (90.2 kW)

Engine

Type:John Deere 7.6L 6-cyl diesel

Capacity

Fuel:65 gal (246.0 L)
Hydraulic system Quad-Range:16.0 gal (60.6 L)
Hydraulic system 2WD Power Shift:10.5 gal (39.7 L)
Hydraulic system 4WD Power Shift:13.5 gal (51.1 L)

Overview

Notes: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.
Series:50 Series
Built in:Waterloo, Iowa, USA
Category:Row-Crop tractor
Original price:$46,670 (1983 Quad-Range ROPS 2WD), $67,009 (1983 Power Shift Cab 4WD)
Production years:1983 - 1988

Electrical

Ground:negative
Batteries:2
Battery volts:6, Optional 12
Charging amps:72, 90 with Sound-Gard cab
Charging system:alternator

Hydraulics

Type:closed center
Valves:2 or 3
Pressure:2277 psi (157.0 bar)
Pump flow:26.5 gpm (100.3 lpm)
Capacity Quad-Range:16.0 gal (60.6 L)
Capacity 2WD Power Shift:10.5 gal (39.7 L)
Capacity 4WD Power Shift:13.5 gal (51.1 L)

Mechanical

Cab:Sound-Gard cab standard. Optional four-post Roll-Gard ROPS.
Drive:Two- or four-wheel drive
Brakes:Hydraulic wet disc brakes
Final drives:inboard planetary
Power steering:Yes
Differential lock:hydraulic rear

Attachments

Loaders:John Deere 158 loader, John Deere 265 loader, John Deere 280 loader

158 Loader

Notes:For use on tractors with two-wheel drive.
Weight:1771 lbs (803 kg)
Rollback:14°
Dump angle:37°
Reach dumped:28 inches (71 cm)
Boom cylinder:2.75 inches (6 cm)
Bucket widths:60 inches (152 cm), 72 inches (182 cm), 84 inches (213 cm), 96 inches (243 cm)
Height at pin:156 inches (396 cm)
Lift capacity:3634 lbs (1648 kg)
Breakout force:4621 lbs (2096 kg)
Bucket cylinder:2.5 inches (6 cm)
Clearance level:149 inches (378 cm)
Clearance dumped:127 inches (322 cm)
Bucket capacities:0.5 cu yd (0.4 cu m), 0.6 cu yd (0.5 cu m), 0.8 cu yd (0.6 cu m), 0.9 cu yd (0.7 cu m)

265 Loader

Notes:For use on tractors with two-wheel drive.
Weight:2619 lbs (1187 kg)
Rollback:43°
Reach dumped:25.6 inches (65 cm)
Boom cylinder:3.125 inches (7 cm)
Bucket widths:61 inches (154 cm), 73 inches (185 cm), 85 inches (215 cm), 97 inches (246 cm)
Height at pin:157 inches (398 cm)
Lift capacity:3920 lbs (1778 kg)
Breakout force:5730 lbs (2599 kg)
Bucket cylinder:2.75 inches (6 cm)
Clearance level:150 inches (381 cm)
Clearance dumped:123 inches (312 cm)

280 Loader

Notes:For use on tractors with four-wheel drive.
Weight:2795 lbs (1267 kg)
Rollback:41°
Dump angle:44°
Reach dumped:26 inches (66 cm)
Boom cylinder:3.5 inches (8 cm)
Bucket widths:85 inches (215 cm), 97 inches (246 cm)
Height at pin:178 inches (452 cm)
Lift capacity:3718 lbs (1686 kg)
Breakout force:5126 lbs (2325 kg)
Bucket cylinder:3.125 inches (7 cm)
Clearance level:173 inches (439 cm)
Clearance dumped:152 inches (386 cm)

Transmission

Options:16-speed partial power shift, 15-speed full power shift

Quad-Range

Type:partial power shift
Gears:16 forward and 6 reverse
Notes: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.
Clutch:Perma-Clutch wet disc
Oil capacity:64 qts (60.6 L)

Power Shift

Type:full power shift
Gears:15 forward and 4 reverse
Notes:Optional transmission. Full (clutchless) power shift can be made between gears, forward and reverse.
Clutch:Perma-Clutch wet disc
Oil capacity 2WD:42 qts (39.7 L)
Oil capacity 4WD:54 qts (51.1 L)

Tractor hitch

Control:lower-link draft sensing
Rear Type:IIIN/II
Rear lift:6294 lbs (2854 kg), Optional 7418 lbs (3364 kg)

Dimensions & Tires

Weight:12745 to 15400 pounds
2WD Wheelbase:106.7 inches (271 cm)
4WD Wheelbase:105.3 inches (267 cm)
Ag rear tires:23.1-34, 16.9-38, 20.8-38, 20.8R38, 18.4-42, 18.4R42
Rear tire 2WD:18.4-38
Rear tire 4WD:18.4-38
Front tire 2WD:10.00-16
Front tire 4WD:14.9-26

Power Take-off (PTO)

Clutch:hydraulic wet disc
Rear PTO:independent
Engine RPM:540@2200, 1000@2200
Rear PTO Type:540/1000