TractorData Logo
TractorData

Hart-Parr 40

The Hart-Parr 40 is a tractor produced by Hart Parr. It is equipped with a 617.7 ci 10.1 L engine. Transmission: 2 forward and 1 reverse. Operating weight: 7500 lbs 3402 kg.

Fuel & Capacities
Gasoline
Transmission
2 forward and 1 reverse
Operating Weight
7500 lbs 3402 kg

Overview

Hart-Parr 40 tractor photo
1923 - 1927 Standard-tread tractor
Production
Manufacturer
Hart-Parr
Standard-tread tractor
Built in Charles City, Iowa, USA
Original price was $2,250 in 1927
Hart-Parr 40 Engine
Hart-Parr 10.1L 4-cyl gasoline
Engine details ...
Hart-Parr 40 Transmission
2-speed gear
Transmission details ...
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
Performance test details ...
Mechanical
Two-wheel drive
Manual steering
Open operator station.
Dimensions & Tires
Weight
7500 lbs 3402 kg
Front tire
28x5
Rear tire
52x13
Full dimensions and tires ...
Belt Pulley
Diameter
14 inches 35 cm
Width
9 inches 22 cm
RPM
800
Speed
2750 ft/min 838.20 meters/min

Engine

Engine Detail — 617.7 ci / 10.1 L Gasoline

Manufacturer
Hart-Parr
Fuel Type
Gasoline
Configuration
4-cylinder, liquid-cooled, 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
5.50x6.50 inches 140 x 165 mm
Rated RPM
800

Transmission

Transmission — 2 forward and 1 reverse gear

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

Dimensions

Hart-Parr 40 Tires
Ag front
28x5 (steel)
Ag rear
52x13 (steel)
Dimensions
Length
140 inches 355 cm
Width
96 inches 243 cm
Height
67 inches 170 cm
Weight
7500 lbs 3402 kg

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

Photos

1923 Hart-Parr model 22-40.

1923 Hart-Parr model 22-40.

1926 Hart-Parr model 22-40.

1926 Hart-Parr model 22-40.

1926 Hart-Parr model 22-40.

1926 Hart-Parr model 22-40.

close-up of the Hart-Parr model 22-40 engine.

close-up of the Hart-Parr model 22-40 engine.

Hart-Parr model 22-40 tractor.

Hart-Parr model 22-40 tractor.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Hart Parr Hart-Parr 40.

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours

Hart Parr Hart-Parr 40 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Hart Parr Hart-Parr 40.

Converted Equivalents:

Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS

Related models