TM 55-1520-240-23-9
11-91
INSTALL CONTROL PALLET STA 95
(Continued)
11-91
4.
On helicopters with 74 , perform the following
steps:
a.
Remove nut (7) and washer (8). Slide bolt (9)
outboard and position yaw input link (10) in
yaw idler bellcrank (11).
b.
Install bolt (9), washer (8), and nut (7) in
bellcrank (11). Do not tighten nut at this time.
Remove tag from link (10).
c.
Remove nut (12) and washer (13). Slide bolt
(14) outboard and position thrust input link
(15) in thrust idler bellcrank (16).
d.
Install bolt (14), washer (13), and nut (12) in
thrust idler bellcrank (16). Do not tighten nut
at this time. Remove tag from link (15).
e.
Connect three electrical connectors (17) to
bulkhead receptacles (18). Remove tags
from wires.
f.
Connect two connectors (19) of yaw CPT
(20) to receptacles (21) on structure (22).
Remove tag.
g.
Connect connector (23) to thrust CCDA (24).
Remove tag.
h.
Connect connector (25) to yaw magnetic
brake (26). Remove tag.
i.
Perform pallet yaw control rig check (Task
11-48).
j.
Perform pallet thrust control rig check (Task
11-48).
k.
Torque two nuts (7 and 12) to 30 to 60
inch-pounds. Install two cotter pins (27 and
28).
l.
Check two bolts (9 and 14). Bolts shall not
rotate with torque less than 10 inch-pounds.
There shall be no axial looseness. If bolts
rotate or are loose, add washer under nuts
and repeat step k.
INSPECT
FOLLOW-ON MAINTENANCE:
Install thrust and yaw connecting links (Task 11-106).
Remove servocylinder safety blocks (T31) (Task
11-29).
Perform operational check of flight controls (TM
55-1520-240-T).
Close closet backup panel (Task 2-2).
Install closet acoustic blanket (Task 2-108).
END OF TASK
11-490
