Gyroscopic instruments are very sensitive. They have precision bearings on the gyroscope rotor, pivots, and yoke shaft. Be careful when move or touch the instrument when it is out of the airplane. If you are not careful when you move or touch the instrument, you can cause damage the bearings.
Dirt and other contaminants can also cause damage to the bearings. Obey these special precautions when you move, install, remove, or ship any gyroscopic instruments.
(1) To prevent damage to the gyro, do not move a gyro after the electrical power or vacuum pressure is removed and before the gyro rotor has stopped. The gyro rotor will not fully stop for approximately 15 minutes after the electrical power or vacuum pressure is removed.
(2) During the removal of instruments, put soft material between the instruments and the control column.
(3) Do not shake or cause vibration of the panel or the instruments.
(4) Do not hit the gyroscope against any other object. Do not shake the gyroscope or put the gyroscope on a hard surface. If you are not careful, you can cause damage to the instrument.
(5) Always be very careful when you move or hold gyroscopic instruments, because you can easily cause damage.
(6) Do not remove any wires, labels, tie straps, or any other parts of the gyro that are installed by the manufacturer.
(7) Visually examine the gyro for any external damage. There must be no scratches, dents, or dings on any part of the gyro. Do not install gyros that have scratches, dents, or dings.
(8) If you must ship a gyroscopic instrument, make sure that all the female ports have plugs that you can remove, and that all the male receptacles have plastic caps that you can remove.
(9) Put connector caps on all the electrical pin connectors to make sure that they are not bent or broken.
(10) Put all gyros in Styrofoam or other soft material for storage and transportation. If possible, ship the gyroscope in the box from the manufacturer in which it was received.
(11) Keep the plugs in the ports unless the instrument is installed in an airplane or maintenance personnel are doing a test.