| Manufacturer | David Brown |
| Price | 3,600(USD) |
| Model | 770 |
| Equipment Type | Utility Tractors |
| Factory | Meltham Mills, Huddersfield, England |
DAVID BROWN 770 POWER
| Engine | 36 hp/26.8 kW |
| PTO (claimed) | 32 hp/23.9 kW |
| Plows | 2 |
ENGINE DETAIL
The David Brown 770 tractor features a robust AD3/49 diesel engine with a displacement of 2.4 L, generating 36 hp at 2055 RPM, suitable for various agricultural applications that require reliable power under load. Its direct injection fuel system and 17:1 compression ratio enhance fuel efficiency and torque output of 100 lb-ft at 1400 RPM, which can facilitate effective fieldwork, though it may struggle in very hilly terrains where increased power demand is necessary. Maintenance is manageable with an oil capacity of 7.8 quarts and a coolant capacity of 12 quarts; however, users should monitor oil levels closely to prevent overheating during extended operations.
| Description | 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 |
DAVID BROWN 770 ENGINE
The David Brown 770 features a robust 2.4L 3-cylinder diesel engine, providing efficient fuel consumption and reliable torque for agricultural tasks. With an 11.4-gallon fuel tank capacity, the tractor is suitable for extended operations, although the relatively modest size may necessitate more frequent refueling during intensive fieldwork. Ideal for medium-scale farming, the 770 excels in versatility but may face challenges in larger operations requiring more horsepower and advanced features.
| Description | David Brown 2.4L 3-cyl diesel |
| Fuel tank | 11.4 gal/43.1 L |
TRANSMISSION
The David Brown 770 tractor features a 12 forward and 4 reverse gear system, offering versatility for various agricultural applications. Its dry disc clutch provides reliable engagement, though it may require more maintenance than a hydraulic system. With an oil capacity of 28.8 quarts, regular oil changes are crucial to ensure optimal performance and longevity of the engine components.
| Type | gear |
| Gears | 12 forward and 4 reverse |
| Clutch | dry disc |
| Oil capacity | 28.8 qts/27.3 L |
MECHANICAL
The David Brown 770 features a 4x2 2WD chassis with mechanical drum brakes, which may pose challenges in wet conditions due to reduced traction and stopping power. Its 12-speed gearbox provides versatility for various field applications, while the open operator station offers excellent visibility but limited weather protection. The mechanical rear differential lock enhances traction, crucial for challenging terrains, making it suitable for tasks requiring consistent power delivery.
| Chassis | 4x2 2WD |
| Final drives | spur gear |
| Differential lock | mechanical rear |
| Steering | manual |
| Brakes | mechanical drum |
| Cab | Open operator station. |
| Transmission | 12-speed gear |
HYDRAULICS
| Type | open center |
| Pressure | 2000 psi/137.9 bar |
| Pump flow | 6.6 gpm/25.0 lpm |
TRACTOR HITCH
| Rear Type | I |
| Control | position and draft control |
| Rear lift (at ends) | 1600 lbs/725 kg |
POWER TAKE-OFF (PTO)
| Rear PTO | live |
| Rear RPM | 540 (1.375) |
| Engine RPM | 540@1620 |
DAVID BROWN 770 TIRES
The David Brown 770 tractor features a standard agricultural front tire size of 5.50-16 and rear tire size of 11.2/10-28, providing good traction in various field conditions. The tire sizes enable optimal weight distribution, enhancing stability during heavy-duty operations like plowing. However, this model may face challenges in deep mud due to relatively narrow front tires compared to modern wider alternatives.
| Ag front | 5.50-16 |
| Ag rear | 11.2/10-28 |
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 |
DAVID BROWN 770 WEIGHT
| Shipping | 3110 lbs/1410 kg |
| Operating | 3270 lbs/1483 kg |
| Max capacity | 4470 lbs/2027 kg |
DIMENSIONS & TIRES
The David Brown 770 tractor features a compact wheelbase of 75 inches, enhancing maneuverability in tight spaces. Weighing between 3110 to 3270 pounds, it offers stability and traction, particularly suited for medium-duty agricultural tasks. However, the tire sizes (6.00-16 front and 12.4/11-28 rear) may limit its performance in extremely soft or uneven terrains, necessitating careful consideration of soil conditions during operation.
| Wheelbase | 75 inches/190 cm |
| Weight | 3110 to 3270 pounds |
| Front tire | 6.00-16 |
| Rear tire | 12.4/11-28 |
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 |
| Battery AH | 96 |