TM 115895-463-15
and shelter. To eliminate confusion, all in-
c. Unloading Shelter. To unload the shelter
structions must come from the loading crew
from the truck, reverse the procedures given
supervisor.
in b above.
(2) Loop a 1/2-inch rope (at least 15 feet
long) to each rear towing eye.
(3) Lower the tailgate of the truck; make
Warning: The AN/MSC-31A must be prop-
sure that all tools and equipment have been re-
erly grounded before input power is con-
moved from the bed of the truck. Slowly lift
nected.
the shelter high enough to clear the bed of the
Select a grounding site (within 6 feet of the
truck.
power and signal entrance boxes) that is low
Note. The entrance door of the shelter must he
and damp, if possible, and that will not inter-
at the rear of the truck, and the front end of the
shelter must be flush against the front of the truck
fere with the entrance door, field tires, power,
bed.
or signal cables.
(4) Position a man at the free end of each
a. Loosen and lift the cover of the power en-
of the 1/2-inch ropes to guide the shelter. Back
the truck slowly into position under the shelter
and slowly lower the shelter into the truck.
b. Use the cover support to secure #e cover
in the open position.
Warning: All personnel must remain
clear of the truck while the shelter is being
c. Remove a ground rod and the sledge ham-
lowered into the truck.
mer from their mountings in the shelter (fig.
(5) Remove the lifting ring from the lift-
5-1 ),
ing hook and disassemble the ring and the
d. Remove any dirt or grease from the
sling hooks. Remove the sling hooks from the
ground rod.
lifting and tiedown eyes and the 1/2-inch ropes
from the rear towing eyes. Raise and secure
e. Scoop out a small hole, about 6 inches
the truck tailgate.
deep, at the selected grounding site.
(6) Install a tiedown ring assembly (part
f. Drive the grounding rod into the hole
of the sling assembly) in the center support of
until the top of the grounding rod is approxi-
each cargo bed - side rail of the truck (fig.
mately 3 inches above the bottom of the hole.
2-3 )
g. Remove a 10-foot ground strap from the
(7) At each side of the shelter, use the
storage area in the shelter.
hook at the end farthest from the turnbuckle
to hook each sling assembly to a lifting and
h. Connect one end of the ground strap to
tiedown eye of the shelter, secure the sling
the ground rod and the other end of the lower
hooks at the opposite end of the cables to the
GROUND TERMINAL in the power entrance
box.
(8) Tighten all turnbuckles evenly by
hand, and then turn each turnbuckle an addi-
i. Saturate the ground around the rod with
tional one-half turn with a bar or rod inserted
water to keep it moist.
into the slot of the turnbuckle.
j. If a
motor-generator set is
used to
supply
Caution: Do not overtighten the turn-
ac power, ground it the same way as the AN/
buckles. Overtightening the turnbuckles will
MSC-31A.
damage the shelter.
(9) After the truck is driven to the opera-
ting site, lower the tailgate to the horizontal
position; then remove the ladder from the
shelter and secure it to the left side of the tail-
must be completed" before power is connected
gate.
to the AN/MSC-31A.