The Sheppard Diesel SD-4 is a tractor with a rating of approximately 51 hp, positioning it at the lower end of its class. Manufactured from 1954 to 1956, this model features a 4-cylinder diesel liquid-cooled engine, coupled with a 10-speed gearbox and two-wheel drive configuration. The tractor's listed operating weight is 2835 kg, and it is suitable for use on areas of up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
51 hp
Weight
2835 kg
Catalogue coverage
Variants represented
2
Richest spec table
44 rows
Recorded power
51 hp
Recorded weight
2835 kg
Transmissions
10-speed gear
Production years
1954-1956
Verified variants
0
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Overview
ManufacturerSheppard DieselReference
Row-Crop tractorReference
Built in Hanover, Pennsylvania, USAReference
Total built231Reference
Two-wheel driveReference
Final drivesspur gearReference
Manual steeringReference
Disc brakesReference
Open operator station.Reference
Engine
Sheppard Diesel 5.2L 4-cyl dieselReference
Engine38.0 kWReference
Plows4Reference
Sheppard Diesel 4-319Reference
dieselReference
4-cylinderReference
liquid-cooledReference
Displacement5.2 LReference
Bore/Stroke114 x 127 mmReference
Power38.0 kWReference
Fuel systemindirect injectionReference
Compression22:1Reference
Rated RPM1650Reference
Starter typeelectricReference
Transmission
10-speed gearReference
TypegearReference
Gears10 forward and 2 reverseReference
Clutchdry discReference
In the final year of production, a torque converter was an option on the SD-4 transmission.Reference
PTO & Hydraulics
Rear PTO Type540Reference
Dimensions
Wheelbase232 cmReference
Weight2835 kgReference
Front tire6.00-16Reference
Rear tire13x38Reference
Ag front6.00-16Reference
Ag rear13x38Reference
Length357 cmReference
Height212 cmReference
Front tread142 to 203 cmReference
Front tread23/32 cmReference
Rear tread142 to 213 cmReference
Capacities
Diameter25 cmReference
Width19 cmReference
RPM1150Reference
Speed917.45 meters/minReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
