TM 5-3810-307-10
6-6.
INSTALLING THE HEADACHE BALL.
WARNING
Wear heavy gloves, safety glasses, and steel-toed protection
while working with the hoist cable. Failure to follow this
warning could result in personal injury.
WARNING
The headache ball is used for single part line, light load
operation only. Be sure to subtract the weight of the
headache ball (150 pounds) from the lift weight shown on the
Load Chart. Failure to adhere to this warning could cause
damage to equipment and/or injury to personnel. Refer to
the Load Chart, Appendix E, for proper weight limitation.
Use only a wedge socket of the correct size for the wire
rope fitted. Failure to do so may result in the rope pulling
through the fitting.
Ensure that the live (loaded) side of the wire rope is in line
with the ears of the socket as shown. If the rope is loaded
incorrectly, it will bend under a load as it leaves the socket.
The edge of the socket will eventually wear into the rope
causing damage and failure.
a.
Rig crane for single part line. Refer to paragraph 6-3. Install wedge and socket on dead
end of wire rope. Refer to paragraph 6-4.
WARNING
Use caution when lifting the headache ball. It weighs
approximately 150 pounds (68.1 kg). Failure to follow this
warning could result in personal injury.
b.
Align hole in headache ball (1, Figure 6-7) with holes in wedge and socket (2) and secure
with pin (3). Install new cotter pin (4).
WARNING
The anti-two block weight must be installed on the hoist
cable and the anti-two block switch must be operational
before using the headache ball. Failure to ensure that the
anti-two block system is operational could result in damage
to equipment and/or injury to personnel.
NOTE
The anti-two block system consists of a weight suspended on
a chain attached to a limit switch mounted on the boom nose
weldment. The system also features a relay, buzzer, and
warning light. The buzzer and light are mounted on the cab
console.
6-28 Change 1
