TM 1-1520-238-23
6-396
Change 1
6.90.
MAIN ROTOR DE-ICE POWER DISTRIBUTOR AND AIR DATA SYSTEM (ADS) MAST
REMOVAL/INSTALLATION – continued
6.90.6. Installation
NOTE
Go to step d. if ADS mast was not
removed from de-ice power distributor.
Boresighting after removal and instal-
lation of the ADS mast must be per-
formed by a factory team, unless the
appropriate tools are available and
can be performed by the unit.
Ensure paint stripe is alined for ADS
alinement.
a. Remove barrier material from mast (41), dis-
tributor (36), and transmission.
b. Install mast (41) on distributor (36). Torque six
nuts (42) to 20 INCH-POUNDS.
(1) Install new packing (44) on mast (41).
(2) Feed harness (22) through distributor (36).
(3) Place mast (41) on distributor (36).
(4) Install six washers (43) and nuts (42) on
studs (45).
(5) Torque six nuts (42) to 20 INCH-POUNDS.
Use torque wrench.
(6) Apply a continuous bead of sealing com-
pound around outer edge of mast (41) and
distributor (36). Use sealing compound
(item 177, App F).
(7) Coat six nuts (42) with sealing compound.
Use sealing compound (item 177, App F).
c. Inspect (QA).
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42
43
M04-2984-18
45
36
22
44
41
