TU4

Type and origin
Power type	Diesel
Builder	Kambarka Engineering Works
Build date	1962 - 1974

Specifications
Configuration:
• UIC	B'B'
Gauge	750 mm (2 ft 5+1⁄2 in) 1,067 mm (3 ft 6 in)
Wheel diameter	600 mm (23.62 in)
Minimum curve	40 m (131.23 ft)
Length	8,400 mm (27 ft 6+3⁄4 in)
Width	2,650 mm (8 ft 8+3⁄8 in)
Height	3,295 mm (10 ft 9+3⁄4 in)
Axle load	4 t (3.9 long tons; 4.4 short tons)
Loco weight	17.1 t (16.8 long tons; 18.8 short tons)(?)
Fuel type	Diesel
Prime mover	У1Д6-250ТК
Transmission	hydraulic

Performance figures
Maximum speed	50 km/h (31 mph)
Power output	250 hp (190 kW)

Career
Class	Belarus - ТУ4 Estonia - ТУ4 Finland - TU4 Latvia - ТУ4 Lithuania - ТУ4 Norway - ТU4 Russia - ТУ4 Sweden - TU4 Ukraine - ТУ4

TU4 (ТУ4) is a Soviet narrow-gauge diesel locomotive for the track gauge of 750 mm (2 ft 5+1⁄2 in).

History

The first TU4 was built in 1962 at the Kambarka Engineering Works. 3210 TU4 locomotives were produced until 1974. The locomotives were used on many narrow-gauge railways to move cargo as well as passenger trains.^[1]