David Brown 990 Implematic Transmission

David Brown 990 Implematic tractor photo
1961 - 1980
Model year
Utility tractor
Transmissions overview
6-speed gear
12-speed partially synchronized
Gears:6 forward and 2 reverse
Clutch:279mm dry disc
Three gears (1-3) plus reverse (R) in low and high ranges.
990 Implematic  gear speeds
Type:partially synchronized
Gears:12 forward and 4 reverse
Twelve-speed transmission introduced in 1963.
Page information
Last update:June 4, 2020
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