David Brown 990 Selectamatic Transmission


David Brown 990 Selectamatic tractor photo
1961 - 1980
Model year
Selectamatic Series
Utility tractor
Series map:
880
990
34.3kw
41.0kw
Transmission options
6-speed gear
12-speed partially synchronized
Transmission
Typegear
Gears6 forward and 2 reverse
Clutchdry disc
Speeds
990 Selectamatic  gear speeds
Transmission
Typepartially synchronized
Gears12 forward and 4 reverse
Clutchdry disc
Oil capacity24.3 qts
23.0 L
Three gears, plus reverse, in four ranges. Synchronized up-shifting between gears 1-2-3 and synchronized down-shifting from 3-to-2.
Speeds
With 12.4/11-36 rear tires.
990 Selectamatic  partially synchronized speeds
Shift Pattern
David Brown 990 transmission controls
Page information
Peter Easterlund - owner of TractorData.com
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Peter Easterlund - owner/author
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Updated on January 13, 2026
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