UTB/Universal 643 Specs ( 1988-2004 )
Overview
The UTB/Universal 643 is a utility farm tractor produced in Brasov, Romania, between 1988 and 2004. It features a 4-cylinder diesel engine rated at 64 hp, paired with a Category II rear hitch capable of lifting 4,630 lbs. The model was manufactured in both 2WD and 4WD configurations, with the 4WD variant designated as the 643DT.
Ideal Applications
Engine Performance and Torque:
The UTB diesel engine produces 64 hp and 152 lb-ft of torque at 1400 RPM, utilizing a direct injection fuel system and an oil bath air cleaner.
Transmission and Drive Configurations:
Mechanical options include an 8-speed constant mesh or shuttle transmission, an optional 12-speed creeper range, and the choice between two-wheel drive or four-wheel drive systems.
Hydraulic and Hitch Specifications:
The tractor is equipped with an open center hydraulic system providing 9 gpm of pump flow at 2175 psi, supporting a rear lift capacity of 4,630 lbs with position and draft control.
Production
| Description | Utility tractor / Built in Brasov, Romania |
|---|---|
| Manufacturer | UTB/Universal |
| Original price | $25,000 (2004) |
Engine
| Air cleaner | oil bath |
|---|---|
| Bore/Stroke | 4.02x4.33 inches (102 x 110 mm) |
| Compression | 17:1 |
| Coolant capacity | 14.8 qts (14.0 L) |
| Description | UTB D121.050 / diesel / 4-cylinder / liquid-cooled / diesel / 4-cylinder |
| Displacement | 219.4 ci (3.6 L) / 196.9 ci (3.2 L) |
| Fuel system | direct injection |
| Oil capacity | 10.6 qts (10.0 L) |
| Power | 64 hp (47.7 kW) |
| Rated RPM | 2400 / 2400 |
| Starter power | 4.7 hp (3.5 kW) |
| Starter volts | 12 |
| Torque | 152 lb-ft (206.1 Nm) |
| Torque RPM | 1400 |
| Engine type | UTB 3.6L 4-cyl diesel / 3.2L 4-cyl diesel |
| PTO (claimed) | 58 hp (43.3 kW) |
| Engine type | UTB 3.6L 4-cyl diesel / 3.2L 4-cyl diesel |
| Fuel tank | 16.4 gal (62.1 L) |
Transmission
| Clutch | dry disc / dry disc |
|---|---|
| Description | Four gears (1-4) plus reverse (R) in two ranges (low and high). / Optional creeper adds a third range to the basic transmission. |
| Gears | 8 forward and 2 reverse / 12 forward and 3 reverse / 8 forward and reverse |
| Oil capacity | 24.3 qts (23.0 L) |
| Type | constant mesh / creeper / shuttle |
| Transmission type | 8-speed constant mesh / 12-speed creeper / 8-speed shuttle |
| Transmission type | 8-speed constant mesh / 12-speed creeper / 8-speed shuttle |
Mechanical
| Description | Power steering / Wet disc brakes |
|---|---|
| Differential lock | mechanical rear |
| Drive type | Two- or four-wheel drive |
Hydraulics
| Pressure | 2175 psi (150.0 bar) |
|---|---|
| Pump flow | 9 gpm (34.1 lpm) |
| Type | open center |
| Valves | 1 |
Hitch
| Control | position and draft control |
|---|---|
| Rear lift | 4630 lbs (2100 kg) |
| Rear Type | II |
PTO
| Engine RPM | 540@2160 |
|---|---|
| Rear PTO | independent |
| Rear PTO Type | 540/1000 |
Electrical
| Battery AH | 150 |
|---|---|
| Battery volts | 12 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| 2WD Front tread | 55.1 to 78.4 inches (139 to 199 cm) |
|---|---|
| 2WD Weight | 6192 lbs (2808 kg) |
| 4WD Front tread | 54.3 to 62.2 inches (137 to 157 cm) |
| 4WD Weight | 6889 lbs (3124 kg) |
| Height | 100.4 inches (255 cm) |
| Length | 149.2 inches (378 cm) |
| Rear tread | 55.5 to 75.2 inches (140 to 191 cm) |
| Wheelbase | 89.4 inches (227 cm) |
| 2WD Rear tire | 14.9R-28 |
| Front tire | 6.00-16 |
| Weight | 6192 to 6889 pounds |
| Wheelbase | 89.4 inches (227 cm) |
| 2WD Standard tires (ag) | Front: 6.00-16. Rear: 14.9R-28 |
| 4WD Standard tires (ag) | Front: 9.5/8-24. Rear: 12.4R-36 |
References
| Description | 3 Series Tractors published by Universal* / 3 Series Tractors published by Universal / 643 - 643 DT published by Universal / *Publication contains known errors. |
|---|
Speeds
| Description | With 16.9-30 rear tires. / With 16.9-30 rear tires. |
|---|
Variants
| 643DT | 4WD |
|---|