Hart-Parr 40

Hart-Parr 40 Technical Specifications

Hart-Parr 40 is a Row-Crop tractor that was produced by the John Deere between 1923 – 1927.

Below you will find detailed technical specifications for Hart-Parr 40 covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

Hart-Parr 40 Production

Manufacturer: Hart-Parr
Type: Standard-tread tractor
Factory: Charles City, Iowa, USA
Original price: $2,250 (1927 )

Hart-Parr 40 Power

Drawbar (claimed): 22 hp
16.4 kW
Belt (claimed): 40 hp
29.8 kW
Drawbar (tested): 28.23 hp
21.1 kW
Belt (tested): 46.40 hp
34.6 kW

Hart-Parr 40 Mechanical

Chassis: 4×2 2WD
Steering: manual
Cab: Open operator station.
Transmission: 2-speed gear

Hart-Parr 40 Engine detail

Engine Detail
The Hart-Parr 22-40 used a pair of two-cylinder engine blocks from the 20C on a single crankshaft to create the four-cylinder engine. Early models used two carburetors while later models had a single carburetor to feed both blocks.
Displacement: 617.7 ci
10.1 L
Bore/Stroke: 5.50×6.50 inches
140 x 165 mm
Rated RPM: 800

Hart-Parr 40 Transmission overview

Engine Oil

Type: gear
Gears: 2 forward and 1 reverse
Clutch: mechanical contracting band

Hart-Parr 40 Dimensions

Length: 140 inches
355 cm
Width: 96 inches
243 cm
Height: 67 inches
170 cm
Weight: 7500 lbs
3402 kg

Hart-Parr 40 Tests

Nebraska Tractor Test 97
Kerosene 2-speed 2WD
July 10 – 19, 1923
Link: Nebraska Tractor Test 97 file
Belt power (max): 46.40 hp
34.6 kW
Belt fuel use (max): 6.3 gal/hour
23.8 l/hour
Drawbar performance
Max power: 28.23 hp
21.1 kW
Max pull: 4830 lbs
2190 kg


Is Hart-Parr 40 a good tractor?

The Hart-Parr 40 is one of the great tractors in the Hart-Parr stable, and it has earned Hart-Parr a fantastic reputation.

How much oil does a Hart-Parr 40 take?

Check out the Hart-Parr 40 oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year Hart-Parr made the ?

The Hart-Parr 40 was an agricultural tractor model made from 1923 – 1927

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