David Brown 990 Selectamatic:
• David Brown 990 — AD4 183ci (3.0L) 4-Cyl Diesel — 52 HP at 2,200 RPM — 1971-1979
• Variants: 990, 990G, 990Q, 990SK
• Synchromesh 12F/4R Transmission
David Brown 995:
• David Brown 995 — AD4 219ci (3.6L) 4-Cyl Diesel — 64 HP at 2,200 RPM — 1971-1980
• Variants: 995, 995G, 995Q, 995SK
• Synchromesh 12F/4R Transmission
David Brown 996:
• David Brown 996 — AD4 219ci (3.6L) 4-Cyl Diesel — 62 HP — 1973-1979
• Variants: 996, 996G, 996Q, 996SK
• Introduced 1973 (not 1971 as sometimes listed)
David Brown 1210/1212:
• David Brown 1210 — AD4 219ci (3.6L) 4-Cyl Diesel — 61 HP — 1971-1976
• David Brown 1212 — AD4 219ci (3.6L) 4-Cyl Diesel — 71 HP at 2,300 RPM — 1971-1976
• 1212 featured Hydra-Shift (12F/4R power-shift, clutchless shifting)
• Bore: 100mm × Stroke: 114mm
Engine Specifications:
• David Brown AD4 — 183ci (3.0L) 4-Cyl Diesel (990 only)
• David Brown AD4 — 219ci (3.6L) 4-Cyl Diesel (995, 996, 1210, 1212)
• Both engines: Naturally Aspirated, Indirect Injection
Production Notes:
• Built at Meltham Mills, Huddersfield, West Yorkshire, England
• David Brown acquired by J.I. Case (Tenneco) in 1972
• Last David Brown tractor produced March 11, 1988
• Synchromesh generation introduced 1971 — Weatherframe safety cab
• All variants (G, Q, SK) use same radiator
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