Tab contacts cleaned and lubricated

Other items which have been done are the cleaning of the contacts on the tabs. This picture shows the rear of the tab assemblies, the top of the organ has been removed and the frame holding the tabs lifted up and tilted to allow access to the drawbars.

The switch contacts are clearly visible behind the white plastic tabs. The drawbars are to the right of the picture below the 3 white tabs, and the round can object is the variable capacitor for the pedal drawbar.

The contacts are easily cleaned using a contact cleaner spray. Note there are various types available. The first type to use is one which does not leave any residue. This will dissolve any grease, oxides or other dirt on the contacts. A compressed air spray will remove any dust and dirt.

After cleaning, it is essential to apply some lubrication in the form of a contact spray which leaves a lubricant behind. Without this, the contacts will wear away quickly. This must be a lubricant designed for electrical contacts.

The tabs where only one can be selected at once have a mechanism behind them made from various brass levers and pivots. This also needs lubrication, otherwise the tabs will be very difficult to operate. Electrical contact grease is ideal.

The drawbars have also been cleaned and lubricated in a similar way.