The dismantling of the cab allowed to receive good access to the boiler and firebox for close inspection and repairs.
The cab was removed from the chassis by KZhU-O rail-mounted crane. After that the loco was shunted into the shed for further attention.
After the boiler cladding and insulation were completely removed, inspection showed that the boiler was in excellent condition.
The removed cab was placed on a special trolley. This allows to move it round the shed freely and to conduct repairs to the cab independently from the engine itself.
Five-minute video (16.5 MB) shows the dismantling of the locomotive.