22.214.171.124 Preparation of Part. The part shall be thoroughly cleaned. Refer to Preparation of Part or Area for NDI,
126.96.36.199 NDI Equipment Settings. Refer to Magnetic Particle Method, paragraph 1.4.8.
188.8.131.52 Inspection Procedure. A magnetic field shall be applied to the part perpendicular to the orientation of possible
cracks. The position required for this inspection is illustrated in Figure 6-4.
Select AC on the AC/DC power switch.
Place probe/yoke on part in position 1 as shown.
Press the test switch and apply a light coat of magnetic particle media at the same time.
Remove the media momentarily before removing the current.
Current should be applied for no more than five
Inspect for cracks using the black light.
184.108.40.206 Marking and Recording of Inspection Results. Mark and record the inspection results as required by paragraph
220.127.116.11 Demagnetization. With the switch remaining in the AC position, place the probe/yoke legs in the same position
used for magnetizing. Press the test switch and withdraw the probe/yoke from the part for a distance of two feet before
releasing the switch.
6.4.4 Backup Method. Fluorescent Penetrant, refer to paragraph 1.4.7.
6.4.5 System Securing. Clean the link barrel thoroughly to remove all residual magnetic particle media. Refer to Post
Cleaning and Restoration of Part or Area After NDI, paragraph 1.4.16. The pitch link requires assembly and installation
in accordance with the applicable technical manuals listed in Table 1-1.
Figure 6-4. Main Rotor Link Barrels