of the shelter.
hind the second cargo rack support
(3) Connect the four sling hooks to
from the rear of the truck.
the lifting ring.
(3) Use the sling assembly cable that
(4) Place the lifting ring over the hook
is attached to the tiedown eye at
the left-rear of the shelter, and
on the lifting device.
place the sling hook nearest the
Warning: To avoid injury to personnel
turnbuckle under the side rail and
and damage to equipment, only the per-
in front of the second cargo rack
sonnel engaged in the actual loading opera-
support from the front of the truck.
tion should be permitted near the truck,
(4) Follow the procedues given in (2)
the lifting device, and the shelter. To
and (3) above to secure the right
eliminate confusion, all instructions must
side of the shelter.
come from the loading crew supervisor.
(5) After the sling assembly has been
(5) Tie a 1/2-inch rope (at least 15
attached to the side rails of the
f e e t long) to each rear towing eye.
truck, tighten the turnbuckles.
(6) Check to see that all tools and
equipment are removed from the
Caution: Do not overtighten the turn-
truck body. Lower the truck tail-
buckles. To prevent the shelter from
gate .
twisting in the truck body, equally tighten
(7) Slowly lift the shelter from the
all the turnbuckles at the same time.
ground to a position high enough
(6) Raise and secure the truck tailgate.
to clear the body of the truck.
c. Unloading AN/MSC-31. To unload the
(8) Back the truck into position under
AN/MSC-31 from a truck, reverse the
the shelter.
procedures described in a and b above.
Warning: All personnel must remain
clear of the truck while the shelter is
16. Grounding
being lowered into position.
The AN/MSC-31 must be properly
Position a man at each of the ropes
grounded before input power is connected.
((5) above) to guide the shelter into
Select a grounding site that will not inter-
position, and slowly lower it onto
fere with the entrance door, the field
the truck body.
wires, or the power cable. Ground the
Note. The entrance door of the shelter
AN/MSC-31 as follows:
must be at the rear of the truck, and the
a. Loosen the captive screws and lift
front of the shelter must be against the
front of the truck body.
the cover of the power and signal entrance
box (fig. 5).
(10) Remove the lifting ring from the
b. Use the cover support to secure the
lifting hook and disassemble the
cover in the open position.
lifting ring and sling hooks. Re-
c. Remove the ground rod and the sledge
move the sling center hooks from
hammer (fig. 14) from their mountings.
the shelter lifting eyes and the
d. Select a grounding site within 10 feet
ropes from the shelter towing eyes.
of the power and signal entrance box and
23). Secure the shelter on a truck as
dig a small hole, about 6 incles deep, at
follows :
the site.
e. Remove any paint or grease from the
(1) Use the sling hooks farthest from
ground rod.
the turnbukles and hook each of
f. Drive the ground rod into the hole
the four sling hooks to a tiedown
until the top of the ground rod is approx-
eye on the shelter.
imately 3 inches above ground level.
(2) Use the sling assembly cable at-
tached to the tiedown eye at the
g. Saturate the ground around the rod
Mt.-front of the shelter, and place
with water.
h. Remove a 10-foot ground strap from
the sling hook nearest the turn-
storage cabinet No. 1.
buckle under the side rail and be-
