TM 1-1520-238-23
11-38
Change 7
11.4.
FLIGHT CONTROL SYSTEM BEARING/BUSHING REPLACEMENT (AVIM) – continued
14. Apply sealing compound primer (item 146, App F) using brush (item 34, App F) on mating bore.
Allow primer to dry 2 HOURS. Apply sealing compound (item 168, App F) using brush (item 34,
App F) on mating bore. Install bearing/bushing while sealing compound is still wet.
15. Apply sealing compound primer (item 146, App F) using brush (item 34, App F) on mating bore.
Allow primer to dry 2 HOURS. Apply sealing compound (item 167, App F) using brush (item 34,
App F) on mating bore. Install bearing/bushing while sealing compound is still wet.
16. Apply primer coating (item 147, App F) using brush (item 34, App F) on mating bore. Allow primer
to dry 2 HOURS. Apply corrosion preventive compound (item 62, App F) using brush (item 34,
App F) on mating bore. Install bearing/bushing.
17. Remove six rivets and two retaining plates from connecting link (TM 1-1500-204-23). After installing
bearing install two retaining plates. Install six rivets wet and flush both sides. Use primer coating
(item 147, App F) and brush (item 34, App F) (TM 1-1500-204-23).
18. Apply sealing compound primer (item 146, App F) using brush (item 34, App F) on mating bore.
Allow primer to dry 2 HOURS. Apply sealing compound (item 165, App F) using brush (item 34,
App F) on mating bore. Install bearing/bushing while sealing compound is still wet.
19. Install bearing/bushing 0.000 to 0.002 INCH under surface (TM 55-1500-322-24).
20. Install bearing/bushing 0.000 to 0.005 INCH under surface (TM 55-1500-322-24).
21. Apply sealing compound primer (item 146, App F) using brush (item 34, App F) on mating bore.
Allow primer to dry 2 HOURS. Apply sealing compound (item 170, App F) using brush (item 34,
App F) on mating bore. Install bearing/bushing while sealing compound is still wet.
22. Install bearing/bushing 0.000 to 0.010 INCH under surface (TM 55-1500-322-24).
23. Staking load 34,000 500 pounds (ring stake) (TM 55-1500-322-24).
24. Breakaway torque on bearing must not exceed 6 INCH-POUNDS after installation.
25. Stake bearing. Use intermittent retention method (TM 55-1500-322-24).
26. No primer required.
27. Breakaway torque on bearing must not exceed 15 INCH-POUNDS after installation.
28. Breakaway torque on bearing must not exceed 40 INCH-POUNDS after installation.
29. Use 14,000 pounds staking pressure (TM 55-1500-322-24).
30. Use 30,000 pounds staking pressure (TM 55-1500-322-24).
31. Use staking tool PN AH64-0010 (figure D-471, App D) (7-311511130 housing/7-211511168 bear-
ing).
32. Use staking tool PN AH64-0011 (figure D-471, App D) (7-311525063 housing/HS4736KR5CWGH
bearing).
33. Use staking tool PN AH64-0012 (figure D-471, App D) (7-311525064 housing/MS14103-12 bear-
ing).
34. Use bearing removal tool – main/tail rotor pitch links (figure D-443, App D).
35. Use staking tool main/tail rotor pitch links (figure D-451, App D).
36. Replacement of this bearing/bushing is authorized at AVUM level.
37. Apply a continuous bead of sealing compound (item 176, App F) to faying surfaces of bushing and
support.
38. Use bearing cutting tool for removal (figure D-477, App D).
39. Use torque wrench. (item 446, App H).
40. Breakaway torque on bearing must not exceed 3 INCH-POUNDS after installation.
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