APR 2017 Chapter 67 Flight Controls Page 67.7
67-21 Collective Stick Assembly (continued)
B. Installation
1. Refer to Figure 67-1. Position A333-1 collective-travel stop parallel to collective
stick and apply collective friction. From aft side of co-pilot's seat, carefully
position collective stick assembly in helicopter.
2. Pivot pilot's seat bottom to the open position. Install bolt from inside pilot's seat
structure thru bearing block into tunnel and secure to inboard end of collective stick
assembly. Standard torque bolt, install palnut, and torque stripe per Figure 5-1.
3. At outboard end of collective stick, slide F303-1 support, and attached micro-switches,
up behind collective cross tube and secure support to cabin with two screws.
4. Install journal in outboard pivot bearing of collective stick assembly. Position journal
& bearing between flanges of F303-1 support and insert NAS6604 bolt. Standard
torque bolt per § 20-32, install palnut, and torque stripe per Figure 5-1.
5. Connect forward end of F121-1 push-pull tube to collective stick assembly with
NAS6604 bolt head on outboard (right) side (nut side inboard). Standard torque
bolt per § 20-32, install palnut, and torque stripe per Figure 5-1.
6. Refer to Figure 6-8. Slide F680-3 collective cover over center collective stick aft
of friction assembly.
7. Insert A130-4 spacer into lower end of A333-1 collective-travel stop. Position
spacer and stop in F348-1 anchor. Install NAS1149F0432P and 0463P washers
on spacer on either side of stop as required to obtain 0.001/0.035 inch axial
play and align stop with collective. Secure stop to anchor with NAS6603 bolt,
standard torque per § 20-32, install palnut, and torque stripe per Figure 5-1.
Move collective up & down and verify no binding of stop.
CAUTION
NAS6604-9 bolt connecting forward end of F121-1 push-pull
tube to collective must be installed so bolt head is toward right
side of helicopter. Refer to Figure 67-1.
8. Connect wiring exiting center collective stick to airframe wire harness connector.
Secure connector to airframe harness with Ty-raps as required. Move collective
up & down and verify wiring clearance with no strain.
9. Refer to Figure 76-1. Secure C522-10 throttle control to collective cross tube
with three clamps and screws. Position control inner wire in A462-4 fitting and
rig per § 76-11.
10. Refer to Figure 6-8. Install and secure F445-1 forward tunnel cover, F680-3
pilot's collective cover, F680-1 co-pilot's collective cover, F463-1 mid-tunnel
cover, and F461-1 collective cross tube cover.
11. Adjust collective friction per § 67-22.
To Next Page
