April 2022, 6046 was stripped and the boiler removed from its frames. Throughout the course of 6046’s 10 year ticket various jobs have been completed to maintain the bottom end in a good condition. The bottom end received an inspection with minor faults found. These were attended too but we are pleased to report little work was required.
The boiler was a slightly bigger job receiving all new tubes and flues but before they could be replaced the boiler needed to receive an NDT. Externally new clack pads and various stud holes were welded up. The firebox tube plate was found to be thin and required replacing. From start to finish this replacement took 3 weeks. This was followed by the installation of the new tubes and flues along with the hydraulic test of the super heater header, elements, and main steam pipes. The regulator valve was overhauled and refitted with the main steam pipes and header.
Out of frame steam test was completed before being lifted onto the frames on the 24/09/2022. The new ash pan had been fitted prior to this. For the first time since March 2022 the engine was reunited with its tender and 6046 entered the shed in time for Christmas.
Tools again were downed as everyone went onto maintenance of 5197 ready for the festive period. 5197 did a sterling service over the period again operating some 1300 miles.
Over the winter period refurbishment of the boiler cladding started for 6046 with it being completed in May 2023. At this time 3278 also made it back into the shed with minor work starting again alongside 6046. The boiler cladding was painted for the start of July with the aim to fit it upon its return.
The first test run of 6046 took place in September 2023 with a return to service soon after. 6046 handled the remainder of Churnet Valley services until the end of the season on the 27th October. 5197 and 6046 shared Polar, and we were in the unique position to have both locomotives on site for the festive period. 6046's overhaul took just under 18 months to complete.