UTB/Universal 643

The UTB/Universal 643 is a tractor produced by Utb Universal. It is equipped with a 196.9 ci 3.2 L engine. The listed engine power is Diesel (listed): 64 hp / 47.7 kW; Diesel (listed): 4.7 hp / 3.5 kW. Transmission: 8 forward and reverse. Operating weight: 6192 to 6889 pounds.

Overview

	1988 - 2004 3 SeriesUtility tractor 3 Series Utility tractor

Production
Manufacturer	UTB/Universal
Utility tractor
Built in Brasov, Romania
Original price	$25,000 (2004)

Variants
643DT	4WD

UTB/Universal 643 Power
Engine	64 hp 47.7 kW
PTO (claimed)	58 hp 43.3 kW

Mechanical
Two- or four-wheel drive
Differential lock	mechanical rear
Power steering
Wet disc brakes

Hydraulics
Type	open center
Pressure	2175 psi 150.0 bar
Valves	1
Pump flow	9 gpm 34.1 lpm

Tractor hitch
Rear Type	II
Control	position and draft control
Rear lift	4630 lbs 2100 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000
Engine RPM	540@2160
	1000@2400

Dimensions & Tires
Wheelbase	89.4 inches 227 cm
Weight	6192 to 6889 pounds
Front tire	6.00-16
2WD Rear tire	14.9R-28
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Battery volts	12
Battery AH	150

References
3 Series Tractors published by Universal*
3 Series Tractors published by Universal
643 - 643 DT published by Universal
*Publication contains known errors.

Engine

Engine options
UTB 3.6L 4-cyl diesel
3.2L 4-cyl diesel

Engine Detail — 219.4 ci / 3.6 L Diesel

Manufacturer	UTB D121.050
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	219.4 ci 3.6 L
Bore/Stroke	4.02x4.33 inches 102 x 110 mm
Power	64 hp 47.7 kW
Fuel system	direct injection
Air cleaner	oil bath
Compression	17:1
Rated RPM	2400
Torque	152 lb-ft 206.1 Nm
Torque RPM	1400
Starter volts	12
Starter power	4.7 hp 3.5 kW
Oil capacity	10.6 qts 10.0 L
Coolant capacity	14.8 qts 14.0 L

Engine Detail — 196.9 ci / 3.2 L Diesel

Fuel Type	Diesel
Configuration	4-cylinder
Displacement	196.9 ci 3.2 L
Rated RPM	2400

Transmission

Transmission options
8-speed constant mesh
12-speed creeper
8-speed shuttle

Transmission — 8 forward and 2 reverse constant mesh

Type	constant mesh
Gears	8 forward and 2 reverse
Clutch	dry disc
Oil capacity	24.3 qts 23.0 L
Four gears (1-4) plus reverse (R) in two ranges (low and high).
With 16.9-30 rear tires.

Transmission — 12 forward and 3 reverse creeper

Type	creeper
Gears	12 forward and 3 reverse
Clutch	dry disc
Optional creeper adds a third range to the basic transmission.
With 16.9-30 rear tires.

Transmission — 8 forward and reverse shuttle

Type	shuttle
Gears	8 forward and reverse

Dimensions

UTB/Universal 643 Tires
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

Dimensions
Wheelbase	89.4 inches 227 cm
Length	149.2 inches 378 cm
Height	100.4 inches 255 cm
2WD Weight	6192 lbs 2808 kg
4WD Weight	6889 lbs 3124 kg
2WD Front tread	55.1 to 78.4 inches 139 to 199 cm
4WD Front tread	54.3 to 62.2 inches 137 to 157 cm
Rear tread	55.5 to 75.2 inches 140 to 191 cm

Photos

UTB/Universal 643