TM 1-1520-238-23
Change 6
5-256.11
5.57A.
TAIL ROTOR HUB ASSEMBLY REMOVAL/INSTALLATION (AVIM) – continued
CAUTION
To prevent damage to bearings, ensure
that bearings are not twisted in fork
mounts while installing bolt.
NOTE
All bolt measurements must be taken
at the same points at each end of bolt.
Points should be marked with a wax
pencil.
HS4243-V10-103 bolt may be used as
alternate for HS4243-V10-105 bolt.
k. Measure and record length of new bolt (11).
Use height gage.
(1) Record bolt (11) length on line 16.
l. Apply an even coat of lubricant on bolt (11),
new washers (14), (13), and new nut (12). Use
lubricant (item 114, App F).
(1) Allow lubricated hardware to cure for 6
HOURS at room temperature, or air dry for 30
MINUTES and then cure for 30 MINUTES at
150 F (66 C).
NOTE
Check that fixture assembly is level
and secure before installing hub. Fix-
ture must remain level during assem-
bly.
To install hub in upper fork, go to step
u.
m. Install hub (6) in lower fork (5).
(1) Position hub (6) in fork (5) to match #1’s and
#2’s.
(2) Install bolt (11) and washer (14) through #1
fork mount (23), #1 side spacer stack (15),
hub (6), strap pack (10), #2 side spacer stack
(15), and #2 fork mount (24).
(3) Install plain washer (13) and nut (12) on bolt
(11).
(a) Tighten nut (12) finger tight.
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11
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10
13
12
24
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M04-3245-12
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