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- Kubota L3970 – Specifications
Kubota L3970 – Specifications
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Engine: 39 HP, 3 Cyl, 1.8L Turbo Diesel
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Drive: Hydrostatic (3-Range HST)
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PTO: 30.9 HP, Rear/Mid PTO
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Hydraulics: Open Center, 1700 kg Lift
PROS
- Reliable Kubota turbocharged diesel engine.
- Smooth hydrostatic transmission for easy operation.
- Compact size with strong hydraulic lifting.
- Low vibration and efficient fuel usage.
CONS
- Limited power for very heavy-duty implements.
- Hydrostatic transmission less efficient for towing.
- Optional equipment increases total cost.
Specifications
General Identification
| Brand | Kubota |
| Model Name | L3970 |
| Model Year | Not specified |
| Series | Grand L70 Series |
| Configuration | Agricultural |
| Tractor Class | Compact Utility Tractor |
| Drive Configuration | 4WD (standard) / 2WD Optional |
Engine
| Engine Manufacturer | Kubota |
| Engine Model | D1803-CR-TE5 |
| Engine Type | Diesel, Inline, Direct Injection, Water-Cooled 4-Cycle |
| Number of Cylinders | 3 |
| Bore × Stroke | 87 × 102.4 mm |
| Engine Displacement | 1826 cc |
| Compression Ratio | ~22:1 |
| Aspiration | Turbocharged |
| Fuel System | Common Rail System (CRS) |
| Injection Pump | Electronic CRS |
| Rated Engine Speed | 2300 RPM |
| Maximum Engine Power | 39 HP @ 2300 RPM |
| Maximum Torque | 148.3 Nm |
| Torque Rise | ~25% |
| Governing Type | Electronic |
| Cooling Fan | Engine Driven |
| Air Intake System | Dry-type with pre-cleaner |
| Exhaust Orientation | Vertical |
| Emission Standard | Tier 4 Final / Stage V |
Power Output
| Engine Gross Power | 39 HP |
| PTO Power | 30.9 HP |
| Drawbar Power | ~26–28 HP |
| Hydraulic Power Loss | ~8–10% |
Brake System
| Brake Type | Wet Disc |
| Actuation | Mechanical |
| Parking Brake | Independent Mechanical |
| Brake Cooling | Oil Bath |
PTO (Power Take-Off)
| PTO Type | Independent Rear / Mid |
| PTO Engagement | Electro-Hydraulic |
| PTO Speed | 540 RPM (rear) / 2300 RPM (mid) |
| PTO Shaft | 6-Spline |
| PTO Direction | Clockwise |
| Ground Speed PTO | No |
Hydraulic System
| Hydraulic Type | Open Center |
| Hydraulic Pump | Gear type, engine driven |
| Max Hydraulic Pressure | ~250 bar |
| Lifting Capacity | 1700 kg @ lift points / 1200 kg @ 24 in |
| Lift Control | Position Control |
| 3-Point Hitch | Yes |
| Hitch Category | Category-I |
| Lower Link Ends | Hook ends (convertible to pins) |
| Auxiliary Valve | Up to 3 (optional) |
| Response Control | Mechanical |
Fuel, Fluids & Capacities
| Fuel Tank | ~50 L |
| Engine Oil | ~5.5 L |
| Transmission Oil | ~30 L (HST) |
| Hydraulic Oil | Shared |
| Coolant | ~8 L |
Transmission & Drivetrain
| Clutch Type | Wet Multi-Disc (HST models) |
| Clutch Diameter | Not specified |
| Transmission Type | Hydrostatic (HST) |
| Gearbox Configuration | 3-Range Infinite |
| Forward Gears | Infinite (HST) |
| Reverse Gears | Infinite (HST) |
| Forward Speed Range | 0–18.3 km/h |
| Reverse Speed Range | 0–18.3 km/h |
| Final Drive | Helical Gear |
| Differential Lock | Rear Mechanical |
Tyres & Axle Data
| Tyre Type | Agricultural R1 |
| Front Tyres | 7.0 × 16 |
| Rear Tyres | 12.4 × 24 |
| Front Axle | Heavy duty |
| Rear Axle | Flange hub |
| Track Width (Front) | 1155 mm (adjustable) |
| Track Width (Rear) | 1480 mm (adjustable) |
Electrical & Electronics
| Electrical System | 12V |
| Battery Capacity | 680 CCA (RC 150 min) |
| Alternator Output | ~60 A |
| Starter Motor | Electric |
| Instrument Cluster | Digital / Analog |
| Warning Indicators | Oil, temperature, charging |
Steering System
| Steering Type | Hydrostatic Power Steering |
| Steering Gear | Integral Power |
| Turning Radius (with brakes) | 2.9 m |
| Steering Column | Adjustable |
Operator Environment
| Seat | Adjustable suspension (optional) |
| Suspension Seat | Optional |
| ROPS | Standard |
| Canopy | Optional |
| Footstep | Anti-slip |
| Control Layout | Ergonomic HST pedal |
Implement Compatibility Matrix
| MB Plough | Yes |
| Disc Harrow | Yes |
| Cultivator | Yes |
| Rotavator (5–6 ft) | Yes |
| Thresher | Limited |
| Baler | Yes |
| Trailer (Hydraulic) | Yes |
Dimensions & Weight
| Wheelbase | 1955 mm |
| Overall Length | 3095 mm |
| Overall Height | 2435 mm |
| Overall Width | 1520 mm |
| Minimum Ground Clearance | 342 mm |
| Unladen Weight | 1840 kg |
| Max Permissible Weight | ~2500 kg |
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