Amado Water KeysĪn Amado water key is a miniature piston so it will need to be oiled regularly. Heat works well to bond the ends of this string from fraying. (This can be found as a catfish fishing line at some sporting goods stores). Please use a braided nylon 40-pound test (or higher) string. To properly string rotors please refer to diagram and instructions on bottom corner of the back page. Often regular maintenance and proper attention can greatly reduce the noise of mechanical linkage. If your instrument has excessive linkage noise please take it to a qualified technician. Mechanical linkage should be oiled with oil heavier than the spindle oil (good key oil or sewing machine oil) about four times a year, or when linkage becomes noisy. They are friction fit into the casing and the proper assembly is crucial to their performance. Please do not oil rotors through the leadpipe unless the instrument has been professionally cleaned very recently, oil traps the deposits that cause red-rot and can actually speed up the red-rot process.It is important to note that rotors should not be removed except by a qualified technician. You will have less thinned slide grease in the rotors slowing them down and will need to reapply slide grease less frequently. This process greatly reduces the breakdown of slide grease. Then turn the instrument so that oil may reach the rotors and depress the valve levers several times to fully distribute the oil. To oil rotors through a slide, take the slide all the way out, put the oil in the slide, and install the slide with the instrument turned so that the oil will not reach the rotors. Oil through each individual slide, or from a slide that will easily allow oil to reach all the rotors (commonly the 5th slide on tuba). This should be done a minimum of three times a week, preferably every time you play.
This fills the air space around the rotor and will make the instrument play more efficiently.
A lighter oil (which can be standard piston valve oil, or a slightly heaver mix known as rotor oil,) should be used to oil the inside surfaces of the rotors.This should be done a minimum of once a week. A heavy oil (30 weight motor oil or Bach rotor oil) should be applied at the spindle bearings (under the back cap, and just under the stop arm that the lever is connected to).
Over oiling valves will do no harm to the instrument, it will only waste oil. An un-oiled rotor will wear faster than a regularly oiled rotor. A common habit is to not use enough oil on valves. Valve oil has three purposes: it cleans, lubricates, and it fills air space. To keep your instrument in the best possible condition, please consider the following information.
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