TM 9-4940-568-20
5-29
5-6.
HOOK BLOCK ASSEMBLY MAINTENANCE
THIS TASK COVERS:
a. Removal
b. Disassembly
c. Assembly
d. Installation
INITIAL SETUP
Tools
Tool Kit, General Mechanic’s
(Item 30, Appendix G)
Materials/Parts
Grease (Item 21, Appendix C)
Cotter pin (Item 90, Appendix F)
Cotter pin (8) (Item 91, Appendix F)
Cotter pin (Item 92, Appendix F)
Locknut (Item 27, Appendix F)
Lockwasher (Item 65, Appendix F)
Equipment
Condition
FRS unloaded (TM 9-4940-568-10)
Crane erected (TM 9-4940-568-10)
Hoist cable extended until
hook block rests on ground
(TM 9-4940-568-10)
a. Removal
WARNING
Cable can become frayed or contain
broken wires. Wear heavy leather
palmed gloves when handling cable.
Frayed or broken wires can injure
hands. Failure to comply may result
in injury to personnel.
(1) Remove and discard cotter pin (1) from
nut (2).
(2) Remove nut (2), two washers (3),
screws (4) and wedge socket (5) from
boom (6).
1
2
3
4
5
6
3
