The restoration work required bringing together the appropriate documentation and classifying the extant material. Cleaning and unstopping blockage in the pipework was needed and thousands of pieces were substituted: pallets, membranes, puffers, etc. Everything was tested to ensure it worked properly. The bellows were releathered and air leaks were repaired to ensure a steady wind supply.

All existing pipework was completely examined; some stops had to be rebuilt. This process continued until we finished working on a total of 4,100 pipes in the organ. A new console was also built following the original 1908 Walcker model that can readily perform Romantic and symphonic literature. Electronic combinations and a replay system were also added to the console. This not only guarantees its maintenance, but is quite useful for the concert organist. The sound, in all its splendour, can also be transmitted throughout the entire hall during tours. This feature is also a valuable teaching tool.

Finally, the organ has been revoiced as it originally was and certain sound peculiarities unique to Walcker instruments have been put back. Changes in the pipework which occurred at a later date have been returned to their original state and the stops that had to be reconstructed in the restoration process have been fully incorporated into the new instrument.