TB 1-1520-238-20-120
Bolt, Shear
HS4243--12H62
5306--01--296--8562
(Vendor part numbers, MC424312H62,
PBF144612H62,
SL835112H62,
7692412H62, and AIC692412H62)
Bolt, Shear (Steel)
All
All
Nut, Self--Locking, BA
HS5813--12
5310--01--463--1740
(Vendor part numbers, SLN126--12, BFN00609C12, SL4133--12E, and FT5366--12)
Nut, Self--Locking, BA
HS5483--1216
5310--01--316--7612
(Vendor part numbers F53037--12, 84209--1216, SL4109--12P, 127LH940--126 and
BFN00879--12)
Nut, Self--Locking, BA
7--311113224
5310--01--305--2544
Nut, Self--Locking, BA (Steel)
All
All
Inspection Procedures.
a. Initial Inspections
(1) If the intital torque check was conducted IAW AH--64--01--06 or AH--64--01--07, proceed to
(2) If the initial torque check was not completed IAW AH--64--01--06 or AH--64--01--07,
complete the inspection required IAW para 8C of this SOF prior to the next flight.
b. One Time Barrel Nut/Bolt Inspection -- On or before the next 125 hour inspection interval, but
NLT 1 November 2001, perform a one time hardware identification of all 4 main rotor support strut
assembly deck mounting bolts/barrel nuts.
NOTE
This task is typical for all 4 barrel nuts. Perform task for each nut one at a time.
(1) Remove the ammunition storage magazine IAW TM 9--1090--208--23--1--1, para 4--7--72,
or the IETM (Armament System Area Weapon System -- Ammunition Handling System Installation --
Magazine Area Installation -- Ammunition Magazine Assembly -- Magazine -- Ammunition Storage --
Remove and Install).
(2) Install the 7--262110009--601 Air Vehicle Sling to remove loads which may result in the
truss shifting.
(a) Remove the ADS/Derotation unit IAW TM 1--1520--238--23 or the IETM.
(b) Install sling IAW para 1.79, TM 1--1520--238--23, or the IETM.
(c) Apply load as required to prevent truss movement and allow easy removal/installation of
all bolts.
NOTE
As each nut is removed, inspect the bolt threads. Do not remove the bolt
from the deck if the bolt threads are undamaged.
(3) Remove the nuts for inspection as follows --
(a) Remove forward barrel nut, and if necessary the bolt, IAW TM 1--1520--238--23 and the
IETM and as follows --
NOTE
Do not completely remove the bolt from the deck unless damage is noted
to the bolt threads.
1. For left hand side, disconnect aft end of FS 164.33 directional push pull tube. Tie push
pull tube up and out of the way.
3
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