62-60 Main Rotor Blade Tip Maintenance (continued)
3. Clean bare metal area with lint-free cloth dampened with acetone and allow to dry.
4. Seal exposed bond joints, including bond joints on vertical surfaces, with smooth layer
of B270-1 sealant (poly-sulfide, refer to § 20-79) and allow to cure.
5. Prime remaining exposed metal with two coats of epoxy primer (chromated epoxy
preferred).
6. Apply yellow paint topcoat within 2 – 48 hours of primer application. For best
performance, allow paint to cure 48 hours before flight.
7. Install tip covers and special torque screws to 40 in.-lb wet with A257-9 anti-seize;
ensure cover edges are flush with blade profile.
Page 62.30 Chapter 62 Main Rotor JUL 2020
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