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Years in Production / 1930–1937

Hart-Parr

28-44

Explore the specifications, hardware, and original references for the Hart-Parr 28-44.

48hp

Engine estimate · from belt

2WD Only

Drive

1930–1937

Production years

Hart-Parr

Manufacturer

28-44 / 01

At a glance

Production

Standard-tread tractor

Built in Charles City, Iowa, USA

Manufacturer: Hart-Parr (a part of Oliver)

Pto

Rear Type: 540

Belt Pulley

Diameter: 16.75 inches42 cm
Width: 8.25 inches20 cm
Rpm: 596
Speed: 2600 ft/min792.48 meters/min

Mechanical

Two-wheel drive

Manual steering

Open operator station.

28-44 / 02

Under the hood

Engine Detail

Hart-Parr

kerosene

4-cylinder

liquid-cooled

Displacement: 443 ci7.3 L
Bore Stroke: 4.75x6.25 inches121 x 159 mm
Rated Rpm: 1125
Coolant Capacity: 42 qts39.7 L
Fuel Type: kerosene
Cylinders: 4
Cooling: liquid-cooled

Engine Options

Hart-Parr 7.3L 4-cyl kerosene

Fuel Tank: 34 gal128.7 L

28-44 / 03

Gears & controls

Transmission

Transmission Type: gear
Gears: 3 forward and 1 reverse

28-44 / 04

Size. Stance. Footprint.

Dimensions

Length: 125.75 in319 cm
Width: 65 in165 cm
Height: 59.5 in151 cm
Wheelbase: 80 in203 cm

TractorSpecs source ↗

Dimensions And Tires

Wheelbase: 80 inches203 cm
Weight: 5565 to 6415 pounds
Front Tire: 29x6
Rear Tire: 46x12 (steel)

Tires And Tracks

Front Ag: 29x6 (steel)
Rear Ag: 46x12 (steel)

28-44 / 05

Tractor Photos

28-44 / 06

Tests (NTTL)

Nebraska Tractor Test 183

Kerosene 3-speed 2WDOctober 13 - 27, 1930

Drawbar performance

Gear 2 used for power test.

Gear 1 used for pull test.

Id: 183
Belt Power Max: 49.04 hp36.6 kW
Belt Fuel Use Max: 4.9 gal/hour18.5 l/hour
Max Power: 34.21 hp25.5 kW
Max Pull: 5,116 lbs2320 kg