The main purpose of the diesel locomotive of this series is to perform shunting and removal work on the tracks of industrial enterprises with a gauge of 1520 mm.
The TGM6 series of diesel locomotives with the “D” index is the latest generation of this model, which was produced from 1991 to 2016.
The diesel locomotive is equipped with an 8-cylinder, V-shaped diesel engine type 7-6D49 (8ChN26/26) with gas turbine pressurization with a total power of 883 kW (1200 hp) and a hydraulic transmission UGP 1200/202M with one fluid coupling and two single-stage torque converters TP100M. This tandem diesel-hydraulic transmission allows the diesel locomotive to develop maximum traction force in train mode up to 14 t/s and in shunting mode up to 25 t/s.
The control cabin has a basic configuration and is equipped with two control panels, a hand brake, a ventilation unit, a heating air heater, floor heaters on the driver and assistant sides, a cabinet for installing safety devices and radio stations.
At the request of the client, the control cabin can be equipped with additional equipment: a speedometer, safety devices and automatic locomotive alarms, a radio station, a portable control panel, an engine room washbasin and more.
Other retrofitting and modernization of the diesel locomotive can also be carried out according to the technical specifications provided by the customer and the cost of these works has been agreed upon.
During 2023-2024, the diesel locomotive underwent a complete overhaul in accordance with the current instructions and rules for diesel locomotives of this series, namely:
- complete overhaul of a diesel engine with the replacement of 90% of spare parts and components with new ones, including the connecting rod and piston group (crankshaft bearing shells, piston rings, cylinder liners, valves and valve guides, etc.), as well as installation of new components and assemblies, such as exhaust manifolds, turbocharger TK-23-S01, governor control and speed controller 10VRN100, shaft turning mechanism, electric starter PSU2M and others;
- complete overhaul of the hydraulic transmission with the replacement of 90% of spare parts and components with new ones, including the installation of new components and assemblies, such as the feed pump and its shaft, movable coupling, sensors and valves, etc.;
- complete overhaul of the PK5.25 brake compressor with grinding of the crankshaft, complete replacement of the connecting rod and piston group (liners, pistons, rings, connecting rods, etc.), replacement of cylinders, valves, cooling fan;
- complete overhaul of electrical machines – auxiliary generator KG12.5; electric motors type P21 and P41 oil and fuel pumping pumps;
- complete overhaul of the chassis, namely repair of bogie frames, brake-lever transmission, brake cylinders, hydraulic vibration dampers, etc. with the replacement of all necessary spare parts and components;
- full inspection of wheel sets with turning of tires and inspection of axle box units of the 2nd volume in accordance with the requirements of instructions VND32.0.07-001-2001 and TsT-0165;
- complete repair of auxiliary equipment: water-oil heat exchangers of diesel and hydraulic transmission, fuel heater, fine oil filter unit, main fan drive gearbox, main fan and refrigeration unit shutters and their drives, replacement of water collectors and sections of the refrigerator shaft, drives and couplings of mechanisms and assemblies. Making a new expansion tank;
- complete repair of brake and pneumatic equipment in accordance with the requirements of instruction TsT-0058;
- external inspection and hydraulic testing of air tanks in accordance with the requirements of the instructions TsT-TsV-TsL-TsP-0050;
- replacement of electrical wiring, repair and partial replacement of electrical equipment with new ones, complete repair and restoration of the main and auxiliary control panels;
- complete overhaul with replacement of insulation and internal lining of walls and ceilings, shells, baseboards and other decorative elements in the control cabin;
- a complete set of new pipelines for the locomotive’s water, oil, fuel and pneumatic systems was manufactured.
The diesel locomotive is equipped with a new 64V TNS 450A battery produced by the Elhim Iskra JSC plant, Bulgaria.
In February 2024, specialists from the NDKTI UZ branch carried out work to inspect the technical condition of the main load-bearing structures of the diesel locomotive (body frame and bogie frames) with the issuance of a technical solution to extend the service life of the diesel locomotive by 11 years (until 02/01/2035). All documentation for extending the service life of a diesel locomotive – “Agreement on the provision of services for monitoring the technical condition of the main load-bearing structures” and “Technical solution for extending the service life of a diesel locomotive TR.NDKTI.2024.02.0286” is available.
When carrying out a major overhaul of the diesel locomotive, in order to improve its appearance and improve the working conditions of the servicing locomotive crew, it was modernized with an LED lighting system, the essence of which is to replace factory incandescent lamps with LED lamps in white and red buffer lamps, in floodlights, as well as replacing incandescent lamps in the engine compartment, control cabin and under body lighting with LED ones.
The diesel locomotive underwent commissioning and testing on the access roads of a specialized repair enterprise. Completely ready for use.
Robots were carried out to completely paint the diesel locomotive externally and internally using high-tech and expensive paints and varnishes from the German brand Lankwitzer Gmbh in accordance with the selected color palette and paint scheme.
A two-tone blue-blue exterior paint scheme was chosen using two-component enamels: RAL 5015 – sky blue as the main color and RAL 5012 blue as an additional color. The combination of sky blue and light blue colors of the main scheme of the locomotive is harmoniously complemented by white elements in RAL 9010 color in the form of narrow stripes – along the roof line turning into a triangle on the front part and along the hood floor line, as well as a wide stripe at the level of the lower flaps of the refrigeration shaft with exiting to the frontal part and a sharp zigzag upward on the side surface of the hood. The roof of the locomotive is painted metallic gray in RAL 7047 Telegray 4.
Separate elements of the external paint scheme are signal strips on the front and rear of the locomotive, a strip on the fuel tank, which are painted in traffic yellow RAL 1023, as well as track clearers at the front and rear, which are painted in traffic red RAL 3020.
The basic painting scheme is complemented and harmonized by individual elements painted in white RAL 9010 – the axle box covers and the fuel tank.
The crew part is painted in practical black RAL 9004 – signal black. The image is completed by applying glossy Oracal fluorescent film stickers with the number and series of the locomotive on the front, sides and rear, as well as on the control cabin.
The process of painting a diesel locomotive (from start to finish)
