• Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1971–1976
  • 18,540 built

WhichTractor size, not the maker’s category

David Brown 990 (A) (also listed as 900 Synchromesh) Hydraulics & PTO specs

8 hydraulics and PTO values on record for the 990 (A).

Engine power, claimed · gross or net not stated

57.3 hp

42.7 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “David Brown 900 Synchromesh”, 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.

How much will a 990 (A) lift?

A 990 (A) lifts 4,251 lb (1,928 kg) at the lower-link ends.

Hydraulics & hitch — 990 (A) Hydraulics & hitch
Rear remote valves1
Lift capacity at ball ends4,251 lb · 1,928 kg

Source · Traktorenlexikon, “David Brown 900 Synchromesh”

What PTO does a 990 (A) have?

A 990 (A) has a 540 rpm rear PTO.

PTO — 990 (A) PTO
Rear PTO driveEngine-driven
Rear PTO independenceIndependent
Rear PTO speeds540 rpm
Engine speed at 540 PTO1,828 rpm
Rear PTO shaft1 3/8"- 6 splines
PTO power, claimed46.8 hp · 34.9 kWClaimed; standard not stated by the source

Source · Traktorenlexikon, “David Brown 900 Synchromesh”

Sources and how this page was built

8 hydraulics and PTO values from Traktorenlexikon, “David Brown 900 Synchromesh”.

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: David Brown 900 Synchromesh — CC BY-SA 4.0, WIKIBOOKS-TL-115991 · revision 990952. Wikibooks contributors (Traktorenlexikon). Original document