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Rotary Valve Maintenance

Stringing a Valve

Strining a Rotary Valve



Oiling a Valve


You will need:




  1. Unscrew the caps which cover the tops of the valves. Do not mix them up- they are often numbered for this purpose.


  3. Using the 3-in-1 oil, put a drop or two on the center of the valve. Repeat for all valves. Replace valve caps.


  5. Place a drop of 3-in-1 oil on each of the springs at the top of the keys. Do not forget the trigger! (Once a week is fine.)


  7. Place a drop of 3-in-1 oil on each of your spit valves. This keeps them from locking open just before you play an exposed solo.


  9. Turn the horn over, and still using the 3-in-1, place a drop of oil in the gap on the rotor post which is visible just above the cork or neoprene. This post rotates when the valve is depressed, so it is easy to find. The drop should go right where the mobile part meets the immobile part.


  11. Place the horn in playing position and pull and push the tuning slides in and out three or four times. Do not depress the valves during this procedure - you are drawing some of the oil to the interior of the valve. After you're done pushing and pulling, depress the valves (you should be rewarded with a series of popping noises if your valves have a tight seal.)


  13. Using the lighter oil, remove all tuning slides, and add three to five drops of oil to each opening. Replace the tuning slides, once again pushing and pulling each a few times to work the oil into the valves. Make sure your slides are out at least 1/4" from the valve when you are done, as this helps resist corrosion. Of course most slides should be out further than that for tuning purposes, anyway.


  15. Place six or seven drops of oil down the leadpipe, insert your mouthpiece, and blow forcefully through it while moving all the valves rapidly--without buzzing. Why this works we don't know, but it seems to help.

Your horn is now completely oiled!