JUL 2020 Chapter 5 Inspections Page 5.39B
5-52 Swashplate Assembly 12-Year Inspection
1. Remove swashplate assembly per § 67-40.
2. Remove both pitch links and upper A205-7 fork assembly from swashplate.
3. Determine revision (“REV”) letters on C017-6 swashplate data plate. If revision
letters are “AD” or subsequent, proceed to step 2. If revision letters are “AA”, “AB”,
or “AC”, perform R66 Service Bulletin SB-30.
4. Refer to Figure 12-7. Remove (10) NAS1352 screws (with washers) securing C206-2
& C200-3 retainers to upper swashplate. Remove both retainers and C219-3 spacer
and set aside.
5. Remove inner screws securing sleeve to lower swashplate. Remove sleeve, shims,
and ball and set aside.
6. Using a 0.006 inch feeler gage, gently pry up outer edge of upper C217-1 seal and
expose top ball bearing. Discard upper seal.
7. Clean all parts, including C203-5 yokes.
8. Visually inspect cleaned parts with 10X magnification, to include blind screw-holes
in upper & lower swashplates, for obvious damage. Replace swashplate assembly if
damage is detected on either upper or lower swashplate. Replace damaged parts.
9. Perform swashplate tilting friction adjustment per § 67-41 step 4.
10. Lubricate swashplate bearings per § 12-90 steps 7 thru 11. Install new upper seal
during procedure.
11. Remove rod end form upper fork. Using non-metallic tools, remove majority of sealant
in threaded hole of fork. Visually inspect parts with 10X magnification for obvious
damage. Replace damaged parts. Assemble upper fork assembly and adjust pivots’
center-to-center dimension to 3.85±0.03 inches. Standard torque jam nut & palnut
per § 20-32 and torque stripe per Figure 5-1. Fill exposed cavity with B270-13 sealant.
12. Remove lower A205-7 fork assembly from non-rotating scissors and clean. Remove
rod end from lower fork. Visually inspect parts with 10X magnification for obvious
damage. Replace damaged parts. Assemble lower fork assembly and adjust pivots’
center-to-center dimension to 3.70±0.03 inches. Standard torque jam nut & palnut
per § 20-32 and torque stripe per Figure 5-1. Install lower fork on C204-2 arm and
standard torque bolt per § 20-32. Install palnut, standard torque per § 20-32, and
torque stripe per Figure 5-1.
13. Install swashplate assembly per § 67-40 Part B.
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