David Brown Cropmaster

The David Brown Cropmaster is a tractor produced by David Brown. It is equipped with a 154 ci 2.5 L engine. The listed engine power is Kerosene (listed): 25 hp / 18.6 kW. Transmission: 6 forward and 2 reverse. Operating weight: 2950 lbs 1338 kg.

Engine Power

Kerosene (listed): 25 hp / 18.6 kW

Fuel & Capacities

Kerosene

Transmission

6 forward and 2 reverse

Operating Weight

2950 lbs 1338 kg

Overview

	1947 - 1953 Utility tractor

Production
Manufacturer	David Brown
Utility tractor

Variants
VAD1C	diesel

David Brown Cropmaster Engine
David Brown 2.5L 4-cyl kerosene
Engine details ...

David Brown Cropmaster Power
Engine	25 hp 18.6 kW

Mechanical
Two-wheel drive
Steering	manual
Mechanical drum brakes
Open operator station.

Tractor hitch
Rear Type	I

Dimensions & Tires
Wheelbase	71.5 inches 181 cm
Weight	2950 lbs 1338 kg
Front tire	6.00-19
Rear tire	9.00-28
Full dimensions and tires ...

Engine

Engine Detail — 154 ci / 2.5 L Kerosene

Manufacturer	David Brown
Fuel Type	Kerosene
Configuration	4-cylinder, liquid-cooled
Displacement	154 ci 2.5 L
Bore/Stroke	3.50x4.00 inches 89 x 102 mm
Power	25 hp 18.6 kW
Rated RPM	2000
Idle RPM	600-2000

Transmission

Transmission options
4-speed gear
6-speed gear

Transmission — 4 forward and 1 reverse gear

Type	gear
Gears	4 forward and 1 reverse
Clutch	dry disc
With 9.00-28 rear tires.

Transmission — 6 forward and 2 reverse gear

Type	gear
Gears	6 forward and 2 reverse
Clutch	dry disc
Three gears (1-3) plus reverse (R) in two ranges (low/high).

Dimensions

David Brown Cropmaster Tires
Ag front	6.00-19
Ag rear	9.00-28
Ag front	26x5 steel
Ag rear	42x10 steel

Dimensions
Wheelbase	71.5 inches 181 cm
Length	111.75 inches 283 cm
Width	60.625 inches 153 cm
Height	55.25 inches 140 cm
Weight	2950 lbs 1338 kg
Ground clearance	16 inches 40 cm
Front tread	49.3 to 62.1 inches 125 to 157 cm
Rear tread	48 to 67.5 inches 121 to 171 cm

Photos

David Brown Cropmaster

Recommended Implements & Sizing Guide

Engineering recommendations for David Brown Cropmaster based on its 25 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing	5 ft (60 in)1.5 m	Medium Duty	Pasture maintenance and weeds up to 1.5" diameter.
Rotary TillerSeedbed Prep	54 to 60 in135 - 150 cm	Medium Duty	Thorough seedbed preparation in orchards and vegetable plots.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for David Brown Cropmaster.

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