David Brown 770 Specifications - David Brown 770 Specs

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1965 - 1970 Selectamatic Series, Utility tractor
Series next: David Brown 880
Production
Manufacturer: David Brown
Factory: Meltham Mills, Huddersfield, England
Original price (USD), $3,600 (1970 ),
Capacity
Fuel: 11.4 gal [43.1 L]
3-Point Hitch
Rear Type: I
Control: position and draft control
Power Take-off (PTO)
Rear PTO: live
Rear RPM: 540 (1.375)
Engine RPM: 540@1620
Dimensions & Tires
Wheelbase: 75 inches [190 cm]
Weight: 3110 to 3270 pounds
Front tire: 6.00-16
Rear tire: 12.4/11-28
David Brown 770 Power
Engine: 36 hp [26.8 kW]
Drawbar (claimed): 27.5 hp [20.5 kW]
PTO (claimed): 32 hp [23.9 kW]
Mechanical
Chassis: 4x2 2WD
Final drives: spur gear
Differential lock: mechanical rear
Steering: manual
Brakes: mechanical drum
Cab: Open operator station.
Hydraulics
Type: open center
Pressure: 2000 psi [137.9 bar]
Belt Pulley
Diameter: 8.5 inches [21 cm]
Width: 5.2 inches [13 cm]
RPM: 2023
Speed: 3100 ft/min [944.88 meters/min]
Electrical
Ground: negative
Battery
Volts: 12
Amp-hours: 96
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Bore/Stroke: 3.94x4.00 inches [100 x 102 mm]
Power: 36 hp [26.8 kW]
Fuel system: direct injection
Compression: 17:1
Rated RPM: 2055
Idle RPM: 700-2000
Torque: 100 lb-ft [135.6 Nm]
Torque RPM: 1400
Firing order: 1-2-3
Starter: electric
Starter volts: 12
Oil capacity: 7.8 qts [7.4 L]
Coolant capacity: 12 qts [11.4 L]
Engine Detail
David Brown AD3/49, diesel, 3-cylinder, liquid-cooled, 146.1 ci [2.4 L]
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Series next: David Brown 880
Transmission
Type: gear
Gears: 12 forward and 4 reverse
Clutch: dry disc
Oil capacity: 28.8 qts [27.3 L]
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Series next: David Brown 880
Dimensions
Weight (shipping): 3110 lbs [1410 kg]
Weight (operating): 3270 lbs [1483 kg]
Weight (max capacity): 4470 lbs [2027 kg]
Wheelbase: 75 inches [190 cm]
Length: 112.5 inches [285 cm]
Width: 64 inches [162 cm]
Height (steering wheel): 55.5 inches [140 cm]
Height (exhaust): 80.5 inches [204 cm]
Clearance (drawbar): 11 inches [27 cm]
Front tread: 48/52/56/60/64/68/72/76 inches [121/132/142/152/162/172/182/193 cm]
Rear tread: 48/52/56/60/64/68/72/76 inches [121/132/142/152/162/172/182/193 cm]
David Brown 770 Tires
Ag front: 5.50-16
Ag rear: 11.2/10-28