Install Two Tail Rotor Blades.

TM 55-1520-238-S

b. Install Power Distributor and ADS

b. Install Landing Gear Cross Tube

Mast. TM 1 1520 238 23. Obtain

End Caps. Obtain end caps from floor of

power distributor and ADS mast from pi

pilot station. Slide end caps into left and

ot station seat.

right ends of each main landing gear

cross tube. Aline holes in caps and cross

c. Install Main Transmission Right

tube, and install removed studs, washers,

Side Access Panel. Secure 12 camloc

and nuts. Torque nut to 60 70 Inch

fasteners at panel (R200).

ounds. Install new cotter pins (D-20)

2-16.13 Install Removed Fairings and Access

at unpinned nuts.

Panels (fig. 2-4). Obtain fairings and access

2-16.9 Install Two Tail Rotor Blades.

panels from catwalk area.

a. Identify Blades.

a. Install Wing Access Covers. Install

16 screws at each cover (LW9 and RW9).

b. Unstrap Blades. Unstrap two tail ro

or blades from each blade support (fig.

b. Install Wing Fairings. Install nine

2-7).

screws at each fairing (LW10, RW10,

LW11, and RW11).

c. Install Tail Rotor Blades. Install two

upper tail rotor blades on helicopters

c. Install Forward Ammunition Feed

number one and five and two lower tail

Fairings. Secure 10 camloc fasteners

rotor blades on helicopter number three

at each fairing (L140 and R140).

(TM 1 1520 238 23 ). Use new PLI wash

d. Install Tailboom Aft Closeout Fair

r assemblies (D-21).

ings. Install 21 screws to secure fair

ngs (L545 and R545).

2-16.10 Install Horizontal Stabilators.

2-16.14 Install ADF Wire Antenna and UHF L

a. Remove Stabilator Actuator Sup

and, Communications, and Transponder

ort. Remove nut, bolts, and washers

Blade Antennas. Install FM AM Whip Antenna

from support end fitting and actuator rod

(MWO 1 1520 238 50 37 installed) and Lower

end, and remove actuator support from

IFF Antenna (MWO 1 1520 238 50 36 installed)

stabilator airframe pivots. Retain rod end

(fig. 2 8). Obtain ADF wire antenna from handle on

hardware (fig. 2-6).

aft storage bay (R330). Obtain blade antennas from

b. Install Horizontal Stabilator.

pilot station.

TM 1 1520 238 23 . Use new cotter pin

a. Install FM AM Whip Antenna. Attach

(D-16) for nut on stabilator pivot bolt and

lower half of antenna to upper half.

one cotter pin (D-19) for nut on stabilator

Torque antenna upper jam nut to 265

actuator rod end bolt.

INCH POUNDS and lockwire (D-27).

2-16.11 Install Main Rotor Blades.

Install antenna in vertical stabilizer

mounting bracket. Torque antenna lower

a. Unclamp Blades. Unclamp and re

jam nut to 650 INCH POUNDS and

ove two blades from each rack set (fig.

lockwire (D-27).

2-2).

b. Install ADF Wire Antenna Hook

b. Install Blades. TM 1 1520 238 23

ends of antenna onto standoff terminal

2-16.12 Install Main Rotor Deice Power Dis

spring ends.

ributor and Air Data System (ADS) Mast

c. Install Blade Antennas. Connect

(fig. 2-3).

each antenna plug to mating receptacle

under antenna flange. Aline antenna

a. Remove Main Transmission Right

flanges on fuselage and install six screws

Side Access Panel (R200). Release 12

at each location. Seal antenna flanges

camlock fasteners.

with sealant (D-12) applied between

edges of reinstalled antenna flanges and

mating fuselage skin.

CAUTION

d. Install Lower IFF Antenna. Attach

connector plug to antenna. Aline anten

Polarized internal 8 gage deicing

a to mounting bracket and install four

leads are tagged to indicate proper

screws.

reconnection. Improperly con

2-16.14.1 Install HF Communication Antenna

ected leads will cause electrical

malfunction or equipment damage.

(MWO 1 1520 238 50 60 installed) (fig. 2 8.1).

Change 8

2-32.1