TM 10-3990-205-12&P
a. Pull the control cable (1) to release
the spring pin (2) from the alignment
arm (3). Place the alignment arm
positioning rod (4) over the capscrew
(5) and raise the alignment arm
(3)
to
the
up
position.
Release
the control cable (1), and check
to see that the alignment a r m
(3) is pinned securely in the up
position.
NOTE
If the containers are stacked
in close proximity, the spreader
and
container
will
have
to
be moved to provide sufficient
space to raise the alignment
arms.
b. Repeat the above procedure until
only the three alignment arms
to be used to align the spreader
on the container remain in the
down position.
c. When the spreader has been lowered
into position on the container,
pull the control cable (6) to ENGAGE
the twist locks.
d. Check each coupler to ensure they
are in the locked position.
NOTE
When tension is applied by
the hoisting equipment the
spreader will lift slightly
before the weight of the
container is suspended on
the twist locks.
e. With only enough tension applied
to
the
hoisting
sling
to
lift
the
spreader, look through the opening
in the twist lock housing to see
that the cam locking rod (7) has
moved to the down position and
the nut (8) is in the notch in the
locking cam (9).