PS Magazine - TB 43-PS-625
PS, The Preventative Maintenance Monthly
ISSUE 625
DECEMBER 2004
PS 625
DEC 04
15
4.
Insert the wedge into the socket.
5.
Clamp the dead end of the rope to a short extra
piece of rope. Position the clamp, NSN 4030-00-
233-9566, with the dead end of the rope against
the U-bolt and the short extra piece against the
saddle. Clamp the two as close to the wedge as
possible.
Never clamp the dead end of the rope to the
live end. The live end should form a nearly direct
line to the clevis pin of the fitting. Clamping to
the live end could add a wear point, bend the
nearly straight line, and keep the wire rope from
pulling the wedge in tight against the socket.
M977, M983, M985 HEMTTs…
D
rivers, when you lift a load on your HEMTT’s boom winch, you don’t want the
wire rope suddenly popping loose. That’s a disaster for whatever it is you’re lifting.
Keeping the load secure means you have to properly attach the wire rope to the
hook. The best way to do that is with a good wedge socket. Follow these steps:
1.
Make sure there are no rough edges or burrs on the wedge or socket that might
damage the wire rope.
2.
If the end of the rope is welded, cut off that portion. That allows any distortion of
the rope strands—caused by the sharp bend around the wedge—to adjust itself at
the end of the rope.
3.
Thread the rope through the socket, make a 180° turn, and thread the rope back
through the other side of the socket.
Make sure the end of the rope extends past the socket six to nine times the rope’s
diameter. For example, if you’re using 1/2-in diameter rope, the end will have to
extend 3 to 4 1/2 inches past the socket. Leave it short and the rope may slip free of
the socket during a lift.
Don’t leave
dead end
of rope
too short
Dead end length should be 6-9 times
diameter of rope
you mean you
won’t
lift that
crate or you
can’t
lift it?
I
won’t
until you
attach
the wire
rope in
my boom
winch the
right
way!
…and short extra piece
goes against saddle
Dead end goes
against U-bolt…
now
for that
crate!
good job
attaching my
beam winch’s
wire rope!
625.14-15(C!)
10/29/04
9:48 AM
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