TM 11-5895-1551-23P
Section II. REPAIR OF HOOK BLOCK
9-3.
Description
9-5.
Disassembly
The hook block supports the load in crane applications.
Disassemble the -hook block as follows:
It is imperative that the hook block be properly lubricated
a. Remove cheek plates (2 and 22, fig. 9-2)
and inspected as described in the follow paragraphs.
by removing capscrews (1).
b. Remove cotter pin (4) and press pin (3) out
9-4.
Removal
of sheave block (5). Items (6 through 14) will now be
To remove the hook block, lower the hook block to the
free.
ground, disconnect the hoist cable at the dead end
c. Remove nut (15), set screw (20), and
(which may be at the hook block or on the boom point,
unscrew stud (18) and hook (21) from insulator (19).
depending on the number of parts of line involved) and
unreave the hoist line from the hook block.
KEY to fig. 9-2.
1. Capscrew (8)
2. Cheek plate
3. Pin
4. Cotter pin
5. Sheave block
6. Spacer
7. Bearing
8. Sheave
9. Grease fitting
10. Spacer
11. Sheave
12. Bearing
13. Grease fitting
14. Spacer
15. Round nut
16. Thrust bearing
17. Grease fitting
18. Shoulder stud
19. Insulator
20. Set screw
21. Hook assembly
22. RH Cheek plate
9-3
