300F. (66C. to 149C.).Color match per Federal
(d) (h) and (i). Do not install doubler
Standard 595 No. 24516.
plate in order to assure a smooth
c. Interior Ceiling. Interior ceiling shall be primed
with one coat of Epoxy Primer, or equivalent (catalyze
per manufacturer's instructions). Air dry,18 hours or 30
minutes at 150 to 300F. (66C. to 149C.). Apply two
b. Surface preparation. On shelters serial No. 1 thru
finish coats Epoxy Base, Semi-Gloss Green, or
184 having velstat covering, prepare damaged or worn
equivalent (catalyze per manufacturer's instructions). Air
surface as follows:
dry,18 hours or 30 minutes at 150 to 300. (66C. to
(1) With a sharp knife cut a square area from
damaged or worn section.
149C.). Color match per Federal Standard 595, No.
(2) Peel away damaged velstat covering.
f. Quality Control. Requirements.
(3) Thoroughly clean the repair area with emery cloth
and a clean, lint-free cloth soaked in methyl-ethyl-keton.
(1) A sufficient number of parts shall be examined to
(4) On shelters not having velstat covering, prepare
assure acceptable quality of finishing on all parts. In
the surface in accordance with MIL-T-704.
general, the criteria listed in steps (2) and (3) shall be
evaluated. Properties or performance characteristi9cs
other than those shown below may be required by
applicable drawings or other authoritative documents.
Application of primer and paint shall be
(2) The finish in all types shall show no visual
in accordance with manufacturer's
indication of alligatoring, blistering, chalking, checking,
recommended instructions stamped on
cracking, crawling, flaking, lifting, peeling, or sealing.
The finish shall exhibit no sags, runs, skips, shading,
dusting, or dry overspray.
(3) Adhesion test shall be conducted on finished
parts at regular intervals. The tests shall be conducted
(1) Apply primer (Products Research Corp. Part No.
on a sufficient number of parts selected at random to
assure maintenance of a satisfactory level of adhesion
(2) Apply rubber coating (Products Research Corp.
on all parts. In performing this test, it is suggested that a
Part No. PRC480) following manufacturer's instructions.
plastic or wood stylus be used to scratch the paint films.
A metal stylus may be used, but extreme care must be
exercised to avoid damaging the basic surface of the
Do not apply primer on rubber coating
Several parallel scratches shall be made
over moving parts of hinges.
approximately one-sixteenth inch (0.1588 cm) apart.
Apply a one inch (2.54 cm) wide strip of tape, adhesive
(3) Zurock Inc. primer, Part No. SS516 and floor
side down over the scratches. Only newly manufactured
coating, urethane, gray, zurathread, Part No. SS516 may
tape less than six months old shall be used. Press the
be used as an alternate for the rubber finish.
tape down with a firm pressure of the hand. Remove the
tape in one abrupt action and examine the tested area
8-19. Shelter Air Leakage Test
for any paint damage such as removal of paint at one of
the layers of the finishing system or removal of the entire
a. General. The shelter shall be tested on a yearly
system from the surface. Test panels may be used.
basis for air leakage to determine correct installation and
(4) Touch-up after test. Areas which have been
integrity of the seal assemblies.
used for testing shall be refinished to equal as nearly as
(1) Apply an internal pressure of 0.4 inches (1.016
possible the original finish requirement. The color of
cm) of water (gage) to the shelter using a barometer- or
touched up areas shall be reasonably close to that of the
other- suitable pressure gage to determine pressure
(2) Leakage from the shelter shall not exceed 60
8-18.1. Shelter Floor Refinishing
standard cubic feet per minute.
e. Repair. If test in step b. above is unsatisfactory
a. General. This procedure defines the surface
make the following checks and correct if required.
preparation, type of primer and floor finish to be used.
(1) Inspect for loose window assemblies on doors.
Replace or repair as required.
If aluminum facing or honeycomb core is
damaged, repair using procedures given
Change 1, 8-25