TM 11-5895-1551-23P
CHAPTER 9
REPAIR OF CRANE GANTRY AND BOOM COMPONENTS
Section I. REPAIR OF GANTRY
vestigated by non-destructive test methods.
It is
9-1.
Description
recommended that the inspection be made by the
The gantry is the main structural load bearing member of
magnetic particle (Magnaflux) method, if possible. Worn
the attachment. As such, it must be inspected more
or damaged parts, including sheaves and sheave
carefully than most other assemblies of this machine. It
bushings, should always be replaced.
is particularly important that the gantry be inspected
9-2.
Repair Procedure
carefully after any incident involving severe snapping,
whipping, or jerking of the boom, due to any cause. Any
Refer to figure 9-1 and replace any worn or damaged
visual indication of twisted, broken, deformed, cracked or
gantry part. Sheaves may be repaired as instructed in
damaged gantry parts should be thoroughly in-
KEY to fig. 9-1.
1. Link (21
2. Peak pin
3. Grease fitting 12)
4. Lower spreader frame
5. Capscrew 12)
6. Cotter pin (2)
7. Pin
8. Cotter pin (2)
9. Sheave (21
10. Bushing (2)
11. Sheave(2)
12. Bushing (2)
13. Wedge
14. Link
15. Cotter pin (2)
16. Pin
17. Rope Socket
18. irease fitting 14)
19. Pin (2)
20. Pin (2)
21. Lockwasher (2)
22. Nut (2)
23. Eye bolt
24. Lockwasher
25. Capscrew
26. Pin
27. Grease fitting (2)
28. Cotter pin (4)
29. Pin (2)
30. Bushing (21
31. Gantry member (2)
32. Bushing
33. Sheave
34. Front gantry member
9-1
