- Rigid chassis
- WhichTractor size: Utility
- No lab test on file
- 1965–1970
- 12,205 built
WhichTractor size, not the maker’s category
The source says so, in a sentence about this machine. How we decide what a machine is
David Brown 770 Selematic specs: hp, weight, years
DAVID BROWN AD 3/49 A (B) three-cylinder diesel. The manufacturer claimed 33.0 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
33.0 hp
24.6 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “David Brown 770”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 3,228 lb
- 3-point lift
- 1,598 lb
- Hyd. flow
- 5.4 gpm
- Top speed
- 15.5 mph
David Brown 770 Selematic specs: key facts
The David Brown 770 Selematic was built from 1965 to 1970.
The David Brown 770 Selematic has a claimed engine power (gross or net not stated) of 24.6 kW (33.0 hp); it has no measured PTO figure.
The David Brown 770 Selematic is two-wheel drive (2WD).
The David Brown 770 Selematic has a DAVID BROWN AD 3/49 A (B) engine, a 3-cylinder 2.39 L diesel unit.
The David Brown 770 Selematic weighs 1,464 kg (3,228 lb) unladen.
The David Brown 770 Selematic has a rear PTO running at 540 rpm.
The three-point hitch of the David Brown 770 Selematic lifts 725 kg (1,598 lb) at the lower-link ends.
The hydraulic pump of the David Brown 770 Selematic delivers 20.4 L/min (5.4 gpm).
Source · Traktorenlexikon, “David Brown 770”
How does the 770 Selematic compare with its class?
- Strength:
Twelve forward gears is high for its class — 100% above the median of 6 across the 131 machines within 10% of its power that hold this figure.
Derived by WhichTractor from 131 comparable records. How we work this out
How much horsepower does a 770 Selematic have?
The only figure for the 770 Selematic is 33.0 hp (24.6 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “David Brown 770”
What engine is in a 770 Selematic?
A 770 Selematic has a DAVID BROWN AD 3/49 A (B), a 3-cylinder 2.39 L diesel engine.
| Make & model | DAVID BROWN AD 3/49 A (B) |
|---|---|
| Cylinders | 3, liquid-cooled |
| Displacement | 146.1 ci · 2.39 L |
| Max torque | 101 lb·ft · 137 N·m @ 1,200 rpm |
| Injection | Direct injection |
Source · Traktorenlexikon, “David Brown 770”
How much will a 770 Selematic lift, and what is its hydraulic flow?
A 770 Selematic lifts 1,598 lb (725 kg) at the lower-link ends of its Category 1 three-point hitch.
| Pump flow | 5.4 gpm · 20.4 L/min |
|---|---|
| Hitch category | Category 1 |
| Lift at ends | 1,598 lb · 725 kg |
| Rear PTO | transmission-driven, 540 rpm |
| PTO shaft | 1 3/8"- 6 splines (Form-A) |
Source · Traktorenlexikon, “David Brown 770”
What transmission does a 770 Selematic have?
Transmission specifications for the 770 Selematic are below.
| Clutch | Pedal-operated dry Borg & Beck single-plate clutch |
|---|---|
| Brakes | Mechanical drum brake in the drive trumpets |
| Steering | Mechanical recirculating ball steering |
| Top speed | 15.5 mph · 25 km/h |
Source · Traktorenlexikon, “David Brown 770”
How much does a 770 Selematic weigh?
A 770 Selematic weighs 3,228 lb (1,464 kg) unladen.
| Unladen weight | 3,228 lb · 1,464 kg |
|---|---|
| Wheelbase | 75.0 in · 1,905 mm |
| Length | 112.5 in · 2,858 mm |
| Width | 64.6 in · 1,641 mm |
| Height | 48.0 in · 1,219 mm |
| Ground clearance | 16.5 in · 419 mm |
| Front track | 48.0–72.0 in · 1,219–1,829 mm |
| Rear track | 48.0–76.0 in · 1,219–1,930 mm |
| Turning radius, braked | 10.1 ft · 3.07 m |
Source · Traktorenlexikon, “David Brown 770”
What oil does a 770 Selematic take, and how much?
A 770 Selematic engine takes 6.6 qt (6.25 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 6.6 qt · 6.25 LSource: Traktorenlexikon, “David Brown 770” · single source, not independently verified |
| Transmission | 24.0 qt · 22.7 LSource: Traktorenlexikon, “David Brown 770” · single source, not independently verified |
| Cooling system | 9.6 qt · 9.1 LSource: Traktorenlexikon, “David Brown 770” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
Which tractors compare with a 770 Selematic?
Within 10% of its 32.3 hp at the PTO as the maker claimed it, with no laboratory test on file, the same type, and first built within 15 years of it.
- International Harvester B-27532.3 hp PTO, claimed · 1958–1961Side by side with the 770 Selematic →
- International Harvester Farmall 24032.3 hp PTO, claimed · 1958–1961Side by side with the 770 Selematic →
- Güldner G 35 A (S)33 hp PTO, claimed · 1967–1969Side by side with the 770 Selematic →
- J.I. Case 44032.5 hp PTO, claimed · 1960–1969Side by side with the 770 Selematic →
- J.I. Case 44132.5 hp PTO, claimed · 1960–1969Side by side with the 770 Selematic →
- Renault N 7032.6 hp PTO, claimed · 1960–1964Side by side with the 770 Selematic →
Common questions about the David Brown 770 Selematic
Is a 770 Selematic two-wheel drive or four-wheel drive?
The David Brown 770 Selematic is two-wheel drive (2WD).
What PTO does a 770 Selematic have?
A 770 Selematic has a 540 rpm rear PTO on a 1 3/8"- 6 splines (Form-A) shaft.
What serial numbers does a 770 Selematic carry?
The source prints serial numbers 580001 to 592375 for the type 770 A / 770 B. It does not say whether that is the tractor’s or the engine’s number, and we never work out a year from a serial number.
Sources and how this page was built
Compiled from Traktorenlexikon, “David Brown 770”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: David Brown 770 — CC BY-SA 4.0, WIKIBOOKS-TL-75660 · revision 1082882. Wikibooks contributors (Traktorenlexikon). Original document