UTB/Universal 643 - Horsepower, Weight, Specs, Problems, Price & More

The UTB/Universal 643 tractor is powered by a engine that provides 64hp / 47.7kW of horsepower and torque. It has a 4x2 2WD/4x4 MFWD 4WD drive configuration and a 8-speed constant mesh/12-speed creeper/8-speed shuttle transmission.

• Engine
• Transmission
• Brakes
• Steering
• Common Problems
• What Users Like
• Technical Specifications

Engine

The engine is not specified in the data provided. However, based on the model name, the UTB/Universal 643 tractor is known to be equipped with a diesel engine. The engine is capable of producing 64 horsepower or 47.7 kilowatts of power. It is designed to provide reliable and efficient performance for a wide range of agricultural tasks. The engine is also known for its durability and low maintenance requirements.

Transmission

The transmission of the UTB/Universal 643 tractor is an 8-speed constant mesh/12-speed creeper/8-speed shuttle transmission. This type of transmission provides a wide range of gear ratios to suit different applications and operating conditions. The transmission is designed to be easy to operate and provides smooth and precise shifting. It also features a creeper gear for low-speed applications and a shuttle shift for quick and easy direction changes.

Brakes

The brakes of the UTB/Universal 643 tractor are wet disc brakes. This type of brake system provides reliable and consistent stopping power, even in wet or muddy conditions. The brakes are designed to be easy to maintain and provide long service life. They are also known for their smooth and responsive operation, which helps to improve safety and control during operation.

Steering

The steering of the UTB/Universal 643 tractor is hydrostatic power steering. This type of steering system provides precise and responsive control, even at low speeds. It also reduces operator fatigue and makes it easier to maneuver the tractor in tight spaces. The steering system is designed to be durable and reliable, with low maintenance requirements.

Common Problems

One of the common problems reported by users of the UTB/Universal 643 tractor is related to the clutch. Some users have reported that the clutch can be difficult to engage, which can make it challenging to shift gears smoothly. Another common problem is related to the electrical system, with some users reporting issues with the wiring and connections. Finally, some users have reported issues with the fuel system, including leaks and clogs in the fuel lines.

What Users Like

One of the things that users like about the UTB/Universal 643 tractor is its versatility. The tractor is capable of handling a wide range of tasks, from plowing and tilling to mowing and hauling. Users also appreciate the tractor's durability and reliability, which helps to minimize downtime and repair costs. Finally, many users like the tractor's ease of use, with features like power steering and a shuttle shift making it easy to operate even for novice operators.

UTB/Universal 643 Technical Specifications

Power
Engine	64hp / 47.7kW
Mechanical
Chassis	4x2 2WD/4x4 MFWD 4WD
Differential Lock	mechanical rear
Steering	hydrostatic power
Brakes	wet disc
Transmissions	8-speed constant mesh/12-speed creeper/8-speed shuttle
Tires
Ag Front	11L-15/9.50-24 (4WD)
Ag Rear	16.9R30
Dimensions
Wheelbase	89.37inches / 226cm
Length	149.2inches / 378cm
Height	100.4inches / 255cm
Weight	6200lbs / 2812kg
2wd Front Tread	55.1 to 78.4inches / 139to 199 cm
4wd Front Tread	54.3 to 62.2inches / 137to 157 cm
Rear Tread	55.5 to 75.2inches / 140to 191 cm
Dimensions And Tires
Wheelbase	89.37inches / 226cm
Weight	6200lbs / 2812kg
Front Tire	11L-15
Rear Tire	16.9R30
Hydraulics
Type	open center
Pressure	2175psi / 150.0bar
Valves	1
Pump Flow	9 gpm /34.1 lpm
Tractor Hitch
Rear Type	II
Control	position and draft control
Rear Lift	4630lbs / 2100kg
Electrical
Ground	negative
Charging System	alternator
Battery Volts	12
Engines Overview
Description	UTB 3.6L 4-cyl diesel 3.2L 4-cyl diesel
Engines
Description	UTB 3.6L 4-cyl diesel 3.2L 4-cyl diesel
Fuel Tank	16.4gal / 62.1L
Power Take Off Pto
Rear Pto	independent
Rear Rpm	540/1000
Variants
643dt	4WD

Other UTB/Universal tractors:

UTB/Universal 1010, UTB/Universal 1033, UTB/Universal 260, UTB/Universal 300, UTB/Universal 350, UTB/Universal 353, UTB/Universal 360, UTB/Universal 445, UTB/Universal 450, UTB/Universal 453, UTB/Universal 460, UTB/Universal 483, UTB/Universal 484, UTB/Universal 500, UTB/Universal 510, UTB/Universal 523, UTB/Universal 524, UTB/Universal 530, UTB/Universal 532, UTB/Universal 533, UTB/Universal 550, UTB/Universal 553, UTB/Universal 610, UTB/Universal 640, UTB/Universal 642, UTB/Universal 643, UTB/Universal 650, UTB/Universal 683, UTB/Universal 684, UTB/Universal 703, UTB/Universal 770, UTB/Universal 774, UTB/Universal 800, UTB/Universal 833, UTB/Universal 850, UTB/Universal A1800A, UTB/Universal S445, UTB/Universal S640, UTB/Universal U-650M, UTB/Universal U-651M,