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 TM 9-1375-213-12-3
TO 11A20-15-1
CHAPTER 3
MAINTENANCE
Section I. SERVICE UPON RECEIPT OF MATERIEL
materials (as necessary) and lift out the carry-
PRECAUTIONS
3-1.
ing case, If reshipment of the entire M122 is
anticipated, retain the wooden box and packing
The components of the M122 are sophisti-
materials. Dispose of steel strapping and (if nec-
cated and expensive electronic devices. They
essary) the wooden box in accordance with local
should be handled, transported, and stored
regulations.
with care. Drop ping or severely impacting a
component or a battery can disable it. Never
c. Turn the air valve on the carrying case
leave batteries in a device being stored for more
counterclockwise two turns to open it. If there
than a few days.
is a hissing sound keep valve o en until it
stops. Turn air valve clockwise to close it.
UNPACKING AND INSPECTION
3-2.
BY OPERATOR
d. Open the two bottom case latches (on
edge opposite handle) by rotating latch handles
a. When unpacking the items, cut (do not
upward and then twisting the handles counter-
break) the binding straps on the shipping
clockwise.
Swing latches away from their
Make no attempt to break or wrench
catches to disengage them, Place carrying case
apart the straps because of the danger of crush-
on edge, HANDLE FACING UP, and on the
ing the box and damaging the equipment inside.
ground. While holding the carrying case steady,
open the other four latches. Swing the latches
b. Using a flat tipped screwdriver or screw-
away from their catches to disengage them
driver blade of demolition kit knife, remove the
then disassemble the halves of the case and lay
screws securing the lid of the wooden shipping
them out flat upon the ground.
box and remove lid. Remove inner packing.
Section II. OPERATOR MAINTENANCE
b. The carrying case may be cleaned with
CLEANING
3-3.
detergent and water if necessary. Remove all
contents before such cleaning and allow the
a. The preferred method of cleaning the
case to thoroughly dry before putting them
components and the carrying case is by means
back.
of a clean, dry rag.
c. If it is necessary to use more than just a
rag to clean a transmitter or receiver's exterior
surface, use a clean rag dampened with alcohol
NOTE
or water. Do not use any other solvent and
NEVER immerse the components. Wipe the
To clean code number windows on the
component(s) dry afterwards.
transmitter, use a cotton swab, or cover
the eraser end of a pencil with a clean
cloth. Be careful not to place too much
pressure on the windows when cleaning
them. They can be broken.
3-1
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