67-63 F316-1 Bellcrank
A. Removal
1. Remove main rotor gearbox per § 63-20.
2. Disconnect F121-11 push-pull tube from F316-1 bellcrank assembly.
3. Disconnect F121-13 push-pull tube from F316-1 bellcrank assembly.
4. Remove nuts and spacer from outboard end of C494-2 shaft. Move shaft slightly
inboard and remove washer from between frame tab and bellcrank.
5. Remove spring pin, castellated nut, and washers from inboard end of C494-2
shaft. Move shaft slightly outboard and remove washer from between bellcrank
and inboard support.
6. Remove bellcrank.
B. Installation
1. Install one A141-3 washer on C494-2 shaft adjacent to both inboard and outboard
end of F316-1 bellcrank.
2. Install bellcrank with washers in helicopter with longer arm pointing up.
3. On inboard end of C494-2 shaft, install two NAS1149F0463P washers followed
by MS17825-4 castellated nut. Tighten nut until it aligns with hole in shaft and
install new MS16562-14 spring pin.
4. On outboard end of shaft install C130-34 spacer and MS21042L4 nut. Special
torque nut to 90 in.-lb. Install palnut and special torque per § 20-33. Torque
stripe inboard and outboard nuts per Figure 5-1.
5. Connect F121-13 push-pull tube to bellcrank and standard torque bolt per § 20-32.
Install palnut, special torque per § 20-33, and torque stripe per Figure 5-1.
6. Connect F121-11 push-pull tube to bellcrank and standard torque bolt per § 20-32.
Install palnut, special torque per § 20-33, and torque stripe per Figure 5-1.
7. Move pedal full travel. Verify smooth movement and no interference.
8. Install main rotor gearbox per § 63-20.
MAY 2015 Chapter 67 Flight Controls Page 67.17
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