TO 1-1-700 - Robins Air Force Base

TO 1-1-700
CHAPTER 6
MOISTURE AND FUNGUS PROOFING
6.1 GENERAL.
The following moisture and fungus-proofing requirements are
furnished to enable inspecting personnel to determine quality
and acceptability of repaired equipment. Consult Appendixes
A and B of TO 1-1-691 for information on materials and
equipment required for these procedures.
6.2 DETAILED REQUIREMENTS.
The following materials will be treated as specified in this
manual prior to assembly on electronic equipment and will
need no additional varnish coverage.
6.2.1 Leather. Examine leather items such as bags, cases,
belts, etc., for wear, torn seams, stains, fungi, etc. Leather is
highly prone to attack by mold, mildew, and fungus.
6.2.1.1 Repair all torn seams with MIL-T-713, Type N, Class
3 wax impregnated twine mildew proofed per MIL-T-3530,
Type I, Class 2. Use No. 301 lock stitches per ASTM-D-6193.
6.2.1.2 Remove paint (lacquer and enamel), ink, or other
similar marking materials applied by field units for identification
purposes as follows:
6.2.1.4 Wipe off all standing water from the leather surface
and allow it to air dry for 40 minutes if subsequent treatment
is required, treat with Type I mildew preventive leather dressing
compound.
O-L-164, DRESSING, LEATHER 55
NOTE
O-L-164, Type I Leather Dressing compound is available
through GSA in a 5 gallon can under NSN 8030-
00-221-0665.
a. Mix one part of O-L-164, Type I leather dressing compound
by volume into 5 parts by volume of clean water.
Preferably, application will be by immersing leather
items in the solution and stirring and/or tumbling them
for 10 minutes. When immersion is impractical due to
inclusion of critical parts on a leather item, application
of solution may be made with a soft bristled brush, felt
dauber or cloth.
b. Allow treated leather to dry in open air.
ASTM D 329 (PART NO. O-A-51), ACETONE 11
a. Dampen a cloth with ASTM D 329 (O-A-51) acetone
and lay it on the area from which the marking materials
are to be removed.
b. Allow the dampened cloth to remain in contact with the
area until marking material has softened.
c. Remove softened marking material by scraping, rubbing
or brushing with a toothbrush with medium stiffness
bristles. Clean leather items with a mild soap and water
solution at a temperature not to exceed 100 °F (38 °C)
applied with a cloth followed by brushing with a toothbrush
with medium stiffness bristles to remove any
remaining dirt.
6.2.1.3 Rinse with clean water at a temperature between
75 °F (24 °C) and 100 °F (38 °C) applied with a cloth.
Under no condition shall olive drab paint be used to
paint canvas or duck items.
6.2.2 Canvas and/or Duck. Examine canvas or duck items
for wear, torn seams, stains, fungi, etc. Those considered to be
still serviceable will be processed as follows:
a. Repair all torn seams with either 10/3 or 12/4 cotton
thread conforming to Commercial Item Description
(CID) A-A-52094, Type II.
NOTE
These threads are available through the Air Force
supply system in 16 oz. tubes and olive drab in color
under NSN 8310-00-262-2782 for the 10/3 thread
and NSN 8310-00-197-7757 for the 12/4 thread.
b. Wash items in a washing machine or other device in
which canvas and/or duck items are tumbled in a solu-
6-1