The engine is a relatively modern design, and represents the most common type of pumping engine built for waterworks after about 1900. 

Before it could be re-assembled, a specialist contractor had to remove asbestos from a number of components.  During re-assembly Dorothea Restorations cleaned and overhauled all the surviving parts, including freeing off the pistons that had seized up with time.

This was a uniquely challenging contract, with many unknowns at the outset, strict site constraints and tight tolerances between large components.