• Vehicle type: unspecified
  • Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1980–1984

WhichTractor size, not the maker’s category

We looked and the record does not say what this machine is. How we decide what a machine is

David Brown 1390 (A) specs: hp, weight, years

DAVID BROWN AD 4/55 four-cylinder diesel. The manufacturer claimed 66.1 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

66.1 hp

49.3 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “David Brown 1390”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

Weight
6,363 lb
Hyd. flow
8.7 gpm
Top speed
18.6 mph

David Brown 1390 (A) specs: key facts

  • The David Brown 1390 (A) was built from 1980 to 1984.

  • The David Brown 1390 (A) has a claimed engine power (gross or net not stated) of 49.3 kW (66.1 hp); it has no measured PTO figure.

  • The David Brown 1390 (A) was offered in two-wheel-drive and four-wheel-drive versions.

  • The David Brown 1390 (A) has a DAVID BROWN AD 4/55 engine, a 4-cylinder 3.20 L diesel unit.Source 1

  • The David Brown 1390 (A) weighs 2,886 kg (6,363 lb) unladen.

  • The David Brown 1390 (A) has an independent rear PTO running at 540 rpm / 1000 rpm.

  • The hydraulic pump of the David Brown 1390 (A) delivers 32.9 L/min (8.7 gpm).

Source · Traktorenlexikon, “David Brown 1390”

Illustration of the 1980–1984 David Brown 1390 (A), a 66 hp farm tractor, four-wheel-drive version, a drawing generated from its specification record
Illustration — not a photograph · four-wheel-drive version

How much horsepower does a 1390 (A) have?

The only figure for the 1390 (A) is 66.1 hp (49.3 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.

Engine, claimed (gross/net not stated)
66.1 hp

Source · Traktorenlexikon, “David Brown 1390”

What engine is in a 1390 (A)?

A 1390 (A) has a DAVID BROWN AD 4/55, a 4-cylinder 3.20 L diesel engine.

Engine — 1390 (A) engine specifications
Make & modelDAVID BROWN AD 4/55
Cylinders4, liquid-cooledSource 2
Displacement195.2 ci · 3.20 L
Max torque168 lb·ft · 228 N·m @ 1,340 rpmSource 2
Injectiondirect injectionSource 2

Source · Traktorenlexikon, “Case 1390”

How much will a 1390 (A) lift, and what is its hydraulic flow?

Hydraulic and PTO specifications for the 1390 (A) are below.

Hydraulics & PTO — 1390 (A) hydraulics and PTO specifications
Pump flow8.7 gpm · 32.9 L/min
Rear PTOIndependent, engine-driven, 540 rpm / 1000 rpm @ 2,025 engine rpm
PTO shaft1 3/8" splines form 1

Source · Traktorenlexikon, “David Brown 1390”

What transmission does a 1390 (A) have?

Transmission specifications for the 1390 (A) are below.

Transmission — 1390 (A) transmission specifications
ClutchDry Borg & Beck double clutch
SteeringHydrostatic Danfoss steering type Orbitrol
Top speed18.6 mph · 30 km/h

Source · Traktorenlexikon, “David Brown 1390”

How much does a 1390 (A) weigh?

A 1390 (A) weighs 6,363 lb (2,886 kg) unladen.

Weights & dimensions — 1390 (A) weights and dimensions
Unladen weight6,363 lb · 2,886 kgtwo-wheel-drive version
Wheelbase83.0 in · 2,108 mmtwo-wheel-drive version
Length142.9 in · 3,630 mm
Width72.8–100.8 in · 1,850–2,560 mm
Height100.0 in · 2,540 mm
Ground clearance15.0 in · 381 mmtwo-wheel-drive version
Front track56.0–72.0 in · 1,422–1,829 mmtwo-wheel-drive version
Rear track52.0–76.0 in · 1,321–1,930 mm
Turning radius, braked10.5 ft · 3.20 mtwo-wheel-drive version

Source · Traktorenlexikon, “David Brown 1390”

What oil does a 1390 (A) take, and how much?

A 1390 (A) engine takes 7.8 qt (7.4 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

1390 (A) fluid capacities, grades and service intervals
SystemCapacity
Engine oil7.8 qt · 7.4 LSource: Traktorenlexikon, “David Brown 1390” · single source, not independently verified
Transmission28.5 qt · 27.0 LSource: Traktorenlexikon, “David Brown 1390” · single source, not independently verified
Cooling system15.0 qt · 14.2 LSource: Traktorenlexikon, “David Brown 1390” · single source, not independently verified

Always confirm against the operator’s manual for your machine before service.

Which tractors compare with a 1390 (A)?

Within 10% of its 66.1 hp of claimed engine power, the same type, and first built within 15 years of it.

Common questions about the David Brown 1390 (A)

Is a 1390 (A) two-wheel drive or four-wheel drive?

The David Brown 1390 (A) was offered in two-wheel-drive and four-wheel-drive versions.

What PTO does a 1390 (A) have?

A 1390 (A) has a independent 540 rpm / 1000 rpm rear PTO on a 1 3/8" splines form 1 shaft.

Sources and how this page was built

Compiled from Traktorenlexikon, “Case 1390”; and Traktorenlexikon, “David Brown 1390”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: Case 1390 — CC BY-SA 4.0, WIKIBOOKS-TL-115388 · revision 989870. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: David Brown 1390 — CC BY-SA 4.0, WIKIBOOKS-TL-116005 · revision 991259. Wikibooks contributors (Traktorenlexikon). Original document