Hart-Parr 28-44
The Hart-Parr 28-44 is a tractor produced by Hart Parr. It is equipped with a 443 ci 7.3 L engine. The rated power output is 49.04 hp 36.6 kW. Transmission: 3 forward and 1 reverse. Operating weight: 5565 to 6415 pounds.
Engine Power
49.04 hp
36.6 kW
Fuel & Capacities
34 gal
128.7 L
Transmission
3 forward and 1 reverse
Operating Weight
6415 lbs
2909 kg
Hart Parr Hart-Parr 28-44 Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
 | 1930 - 1937
Standard-tread tractor |
|---|---|
1930 - 1937 | |
Standard-tread tractor | |
Production | |
|---|---|
Manufacturer | Hart-Parr (a part of Oliver) |
Standard-tread tractor | |
Built in Charles City, Iowa, USA | |
Hart-Parr 28-44 Engine | |
|---|---|
Hart-Parr 7.3L 4-cyl kerosene | |
Fuel tank | 34 gal
128.7 L |
Engine details ...  | |
Hart-Parr 28-44 Transmission | |
|---|---|
3-speed gear | |
Transmission details ...  |
Hart-Parr 28-44 Power | |
|---|---|
Drawbar (claimed) | 22 hp
16.4 kW |
Belt (claimed) | 44 hp
32.8 kW |
Plows | 3-5 |
Drawbar (tested) | 34.21 hp
25.5 kW |
Belt (tested) | 49.04 hp
36.6 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Open operator station. |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 |
Dimensions & Tires | |
|---|---|
Wheelbase | 80 inches
203 cm |
Weight | 5565 to 6415 pounds |
Front tire | 29x6 |
Rear tire | 46x12 (steel) |
Full dimensions and tires ...  | |
Belt Pulley | |
|---|---|
Diameter | 16.75 inches
42 cm |
Width | 8.25 inches
20 cm |
RPM | 596 |
Speed | 2600 ft/min
792.48 meters/min |
References | |
|---|---|
 | |
Oliver Hart-Parr Tractors published in 1930 |
Engine
Engine Detail — 443 ci / 7.3 L Kerosene
Manufacturer | Hart-Parr |
Fuel Type | Kerosene |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 443 ci
7.3 L |
Bore/Stroke | 4.75x6.25 inches
121 x 159 mm |
Rated RPM | 1125 |
Coolant capacity | 42 qts
39.7 L |
Transmission
Transmission — 3 forward and 1 reverse gear
Type | gear |
Gears | 3 forward and 1 reverse |
 | |
Dimensions
Hart-Parr 28-44 Tires | |
|---|---|
Ag front | 29x6 (steel) |
Ag rear | 46x12 (steel) |
Dimensions | |
|---|---|
Wheelbase | 80 inches
203 cm |
Length | 125.75 inches
319 cm |
Width | 65 inches
165 cm |
Height (hood) | 59.5 inches
151 cm |
Shipping weight | 5565 lbs
2524 kg |
Operating weight | 6415 lbs
2909 kg |
Tests
Nebraska Tractor Test 183 | |
|---|---|
Kerosene 3-speed 2WD
October 13 - 27, 1930
Link: Nebraska Tractor Test 183 file | |
Belt power (max) | 49.04 hp
36.6 kW |
Belt fuel use (max) | 4.9 gal/hour
18.5 l/hour |
Drawbar performance | |
Max power | 34.21 hp
25.5 kW |
Gear 2 used for power test. | |
Max pull | 5,116 lbs
2320 kg |
Gear 1 used for pull test. | |
Photos
Hart-Parr 28-44
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