The following works were performed on the locomotive: • repair of diesel engine EMD 12-645E3 • repair of diesel engine PG speed regulator

• repair of WBO compressor no. 13335 • repair of hood and sound and thermal insulation of driver’s cab • repair of buffers and draw gear • repair and certification of braking equipment • testing of air reservoirs • repair of air, water, oil and fuel equipment • repair of electrical devices and installations • repair of the main alternator AR6-D14 • repair of auxiliary generator 3A-8147 • repair of auxiliary electric machines

The following modifications were performed on the locomotive: • installation of new headlights with 24VDC voltage • installation of new lighting of driver’s cab, engine room, frame, steps, • instruments with 24VDC voltage • installation of new registering speedometer TELOC 1200 with deadman device • installation of new Coleman air conditioner • installation of new RAS 8385 I autostop system • installation of new air dryer • installation of new lead accu-batteries • installation of locomotive remote control – tandem ride (multiple unit) • on the heads of the locomotives there were added cocks and pipe couplings for the main line and the reservoir line for the purpose of locomotive tandem ride • installation of radio-dispatch device Funkwerk MESA 26 • installation of GPS device

Locomotive was completely painted and tested in the test station – on a load resistor.