Lilian’s Boiler Overhaul – Part 1

Regular visitors will have noticed that Lilian did not make an appearance when we opened at Easter.  Every 10 years or so it is necessary to remove the boiler from a steam locomotive and subject it to a thorough inspection and overhaul.  Lilian’s boiler was last removed for overhaul in the winter of 2007/8.  Therefore although not ‘due’ for another two years, it was decided to bring the overhaul forwards slightly.

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Lilian stood over the pit for the first stage of dismantling – removal of her ashpan!

As soon as Easter was out of the way work started on dismantling Lilian in our yard.  Although many smaller parts could be removed by hand, obviously many parts are too large and heavy to remove by hand.  Here our Unipower tractor with winch becomes indispensable – designed for use in forestry, it has proved very useful for moving and dismantling railway equipment over the past 50 years!

Lilian stripped down to her chassis and boiler

Lilian stripped down to her chassis and boiler

Jonathan busy removing part of the regulator

Jonathan busy removing part of the regulator

Unipower in place ready to lift the boiler

Unipower in place ready to lift the boiler

Up, up and away!

Up, up and away!

Chassis awaiting wheeling back into the museum for storage

Chassis awaiting wheeling back into the museum for storage

With the boiler removed and stood on its side in our yard, a thorough inspection could be undertaken.  The boiler itself is just over 20 years old, and was constructed in house to replace her previous boiler, which dated from 1885 (it had previously been fitted to her sister ‘Winifred’ and we still have it in store).  Initial inspection showed that the barrel and tubes of the boiler remained in good condition, with the tubes suitable for several more years use. However some of the firebox stays required replacing.

New and old regulator rod ends

New and old regulator rod ends

With the boiler removed, the opportunity was taken to give the chassis a thorough clean

With the boiler removed, the opportunity was taken to give the chassis a thorough clean

Boiler on its side in the yard, with Nigel measuring for new firebox stays

Boiler on its side in the yard, with Nigel measuring for new firebox stays

A view inside Lilian's firebox.  Note the missing stays on the left hand side at the bottom.

A view inside Lilian’s firebox. Note the missing stays on the left hand side at the bottom.

Cutting new stay material

Cutting new stay material