TM 55-1520-240-23-4
5-23.2
INSTALL ROTARY-WING HEAD TIE-BAR ASSEMBLY (Continued)
5-23.2
CAUTION
Avoid handling pitch-varying shaft.
Fingerprints can cause corrosion on
bearing surfaces.
9.
Check rollers (14) are in position in housing (15).
Apply thin coat of grease (E190) to hold rollers in
place, if needed. Use gloves (E186).
10.
Apply light coat of oil (E254 or E254.1) to outer
surface of shaft (2). Wear gloves (E186).
11.
Clean sealant from two holes (16) of housing
(15). Use solvent (E244) and cloths (E120).
Wear gloves (E186).
CAUTION
Do not allow seals to contact tie-bar
during pitch housing installation.
Sharp edges of tie-bar can damage
seals.
12.
Slide housing (15) onto shaft (2) and tie-bar (1),
pitch arm (17) to right looking inboard. Guide
seal (18) onto wear sleeve (19). Seal shall not
be folded.
INSPECT
13.
Align hole (20) in tie-bar (1) with hole (16) in
housing (15).
14.
Apply light coat of compound (E75) to pin (21).
Wear gloves (E186).
15.
Install pin (21) in housing (15). Tap to seat pin.
Use phenolic drift.
16.
Install washer (22 and 22.1), bolt (23), and
nut (24) in housing (15). Torque nut to 35
inch-pounds.
17.
Apply sealant (E336) to washer (22) and housing
(15). Wear gloves (E186).
17.1. Check weight cavity drain hole in pitch-varying
housing to ensure it is clean of debris. Use pipe
cleaner (E469).
Change 2
5-127
