David Brown 770 tractor specifications

1965 - 1970

1965 - 1970 Selectamatic SeriesUtility tractor

Series:

Series:770 Selectamatic → 880

1961 - 1971

Model year 1961-19651965-1971

Selectamatic Series

Utility tractor

Production

Production
Manufacturer:	David Brown
Type:	Utility tractor
Factory:	Meltham Mills, Huddersfield, England
Total built:	33,378

David Brown 880 Power

David Brown 880 Power
Engine (gross):	46 hp 34.3 kW
PTO (claimed):	41 hp 30.6 kW
Plows:	3
Drawbar (tested):	35.56 hp 26.5 kW
PTO (tested):	42.29 hp 31.5 kW
power test details ...

David Brown 880 Engine

David Brown 880 Engine
David Brown 2.7L 3-cyl diesel
Fuel tank:	13.7 gal 51.9 L
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
	4x4 MFWD 4WD
Differential lock:	mechanical rear
Steering:	manual
Brakes:	differential mechanical expanding shoe
Cab:	Open operator station. Cab optional.
Transmissions:	6-speed gear
	12-speed gear
Transmission details ...

Hydraulics

Hydraulics
Type:	open center
Pressure:	2000 psi 137.9 bar
Pump flow:	7.2 gpm 27.3 lpm

Tractor hitch

Tractor hitch
Rear Type:	II/I
Control:	position and draft control
Rear lift (at ends):	1800 lbs 816 kg

Power Take-off (PTO)

Power Take-off (PTO)
Rear RPM:	540/1000
Engine RPM:	540@1800 1000@2000

Dimensions & Tires

Dimensions & Tires
Wheelbase:	79.75 inches 202 cm
Weight:	3765 to 3970 pounds
Front tire:	6.00x16
Rear tire:	14.9-28
Full dimensions and tires ...

880 Serial Numbers

880 Serial Numbers
1965:	530001
1966:	531022
1967:	539410
1968:	546000
1969:	551553
1970:	557013
1971:	560766
Final:	563379
how to read serial numbers...

Belt Pulley

Belt Pulley
Diameter:	8.5 inches 21 cm
Width:	5.687 inches 14 cm
RPM:	1555
Speed:	3160 ft/min 963.17 meters/min

Production

Production Manufacturer:David Brown
Type:Utility tractor
Factory:Meltham Mills, Huddersfield, England
Original price:$3,600 (1970 )

David Brown 770 Power

David Brown 770 Power Engine:36 hp
26.8 kW
PTO (claimed):32 hp
23.9 kW
Plows:2

David Brown 770 Engine

David Brown 770 Engine David Brown 2.4L 3-cyl diesel Fuel tank:11.4 gal
43.1 L
Engine details ...

1965 - 1970

Selectamatic Series

Utility tractor

Series:

770 Selectamatic

→ 880

Engine Detail

Engine Detail
David Brown AD3/49
diesel
3-cylinder
liquid-cooled
Displacement:	146.1 ci 2.4 L
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

Mechanical

Mechanical Chassis:4x2 2WD
Final drives:spur gear
Differential lock:mechanical rear
Steering:manual
Brakes:mechanical drum
Cab:Open operator station.
Transmission:12-speed gear
Transmission details ...

1965 - 1970

Selectamatic Series

Utility tractor

Series:

770 Selectamatic

→ 880

Transmission

Transmission
Type:	gear
Gears:	12 forward and 4 reverse
Clutch:	dry disc
Oil capacity:	28.8 qts 27.3 L

Speeds

Speeds

Hydraulics

Hydraulics Type:open center
Pressure:2000 psi
137.9 bar
Pump flow:6.6 gpm
25.0 lpm

Tractor hitch

Tractor hitch Rear Type:I
Control:position and draft control
Rear lift (at ends):1600 lbs
725 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:live
Rear RPM:540 (1.375)
Engine RPM:540@1620

Dimensions & Tires

Dimensions & Tires Wheelbase:75 inches
190 cm
Weight:3110 to 3270 pounds
Front tire:6.00-16
Rear tire:12.4/11-28
Full dimensions and tires ...

1965 - 1970

Selectamatic Series

Utility tractor

Series:

770 Selectamatic

→ 880

David Brown 770 Tires

David Brown 770 Tires
Ag front:	6.00-16
Ag rear:	12.4/11-28
Ag front:	5.50-16
Ag rear:	11.2/10-28

Dimensions

Dimensions
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