67-64 A331-4 Bellcrank
A. Removal
1. Disconnect F121-13 and C121-17 push-pull tubes from A331-4 bellcrank.
2. Disconnect NAS6604-35 attach bolt and remove bellcrank and two A105-3
journals.
B. Installation
1. Install two A105-3 journals in C331-4 bellcrank's pivot bearings. Install an
NAS1149F0432P washer under head of an NAS6604-35 bolt followed by an
A141-3 washer and insert bolt thru journals. Install an A141-3 washer on bolt
against journal face, followed by an NAS1149F0432P washer.
2. Install bellcrank, with straight side aft, on F020-1 frame's boss, and secure to
frame with an NAS1149F0432P washer and MS21042L4 nut. Standard torque
bolt per § 20-32. Install palnut, special torque per § 20-33, and torque stripe per
Figure 5-1.
67-65 A120-5 Bellcrank
A. Removal
1. Remove hardware securing C121-17 push-pull tube assembly to A120-5 bellcrank
assembly.
2. Disconnect bellcrank pivot from C021-1 tail rotor gearbox.
3. Remove nut holding bellcrank to the pitch control. Remove bellcrank and reinstall
nut, and shims found between bellcrank and pitch control.
B. Installation
1. Install pitch control per § 67-62.
Page 67.18 Chapter 67 Flight Controls MAY 2015
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