APR 2019 Chapter 64 Tail Rotor Page 64.17
64-40 Tail Rotor Hub
64-41 Bearing Replacement
A. Removal
1. Remove tail rotor assembly per § 64-10.
2. Remove tail rotor blades per § 64-20.
3. Refer to Figure 64-6. Press bearing(s) from hub using MT556-11 bearing removal
(and installation) tools.
B. Installation
1. Inspect tail rotor hub per § 64-42.
CAUTION
Elastomeric bearings are a slight press fit in tail rotor hub
bores. Inspect bores for fretting; if fretting is detected, hub is
unairworthy.
2. Refer to Figure 64-7. Using Q-tip, apply light coat of approved primer per § 20-
70 to bottom of hub bearing bore. Apply a thin line of primer to center of bearing
outside diameter. While primer is wet, press bearing into hub using MT556-11
bearing removal and installation tools. Wipe away excess primer.
3. Repeat steps for second bearing, as required.
64-42 Inspection
1. Remove tail rotor blades per § 64-20, and inspect blades per § 64-30.
2. Remove elastomeric bearings per § 64-41.
3. Clean G062-1 tail rotor hub using approved solvent per § 20-70.
4. Visually inspect for indications of damage, wear, nicks, dings, and corrosion. Check
arms for straightness, bolt holes for elongation, and bearing bores for fretting or galling.
Corrosion is not permitted on clamp-up surfaces.
5. For suspect areas, locally remove paint from hub using approved paint stripper per §
20-70; dye penetrant or fluorescent penetrant inspect per § 20-40.
6. Touch-up bare metal using approved materials per § 20-70.
7. Install elastomeric bearings per § 64-41.
8. Install tail rotor blades per § 64-20.
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