TM-1-1500-344-23-2
AIRCRAFT VOLUME II
TECHNICAL MANUAL; CLEANING AND CORROSION CONTROL
APRIL 2009
TM-1-1500-344-23-2 - Page 101 of 240
5-3
NAVAIR 01-1A-509-2
TM 1-1500-344-23-2
15 April 2009
c. Form III (Premixed Liquid). Ready to use liquid for
brush (wipe-on/wipe-off), spray, and immersion
applications. The premixed liquid is the most commonly
used form of MIL-DTL-81706.
d. Form IV (Premixed Liquid, Thixotropic).
Thickened, ready to use liquid for touch-up brush
applications on vertical or underlying surfaces.
e. Form V (Premeasured Powder, Thixotropic). After
addition of water, a thickened liquid is created that is
equivalent to Form IV.
f. Form VI (Premixed Liquid). Ready to use liquid
for touch-up in a self-contained applicator device (e.g.
Touch-N-Prep pens or pre-saturated wipes).
5-5.4. APPLICATION OF MIL-DTL-81706 FORMS I-V.
NOTE
Cleaning shall take place immediately before
application of the chemical conversion coating
solution because oxides will form on the
aluminum surface and interfere with the
chemical reaction.
a. Surfaces to be treated must be clean and free of
oils, greases, fingerprints, dirt, and corrosion products
prior to treatment. Refer to paragraph 5-2 for surface
preparation.
Coating, Chemical Conversion
7
MIL-DTL-81706
b. Immediately following cleaning, apply aluminum
conversion coating material to surface. Keep the surface
wet with treatment material until a color change or
iridescence is noted (approximately 2-6 minutes).
Depending upon the aluminum alloy, the color change
will vary from a light iridescent color to a darker golden
brown in color for Type I. The color will range from a faint
iridescent to a light blue, gray, or purple for Type II.
c. After the color change, rinse treated surfaces with
clean, fresh water and allow to dry completely before
painting.
NOTE
Expiration dates for the Alodine 1132 Touch-N-
Prep (TNP) pens are noted on the individual
pens. As a general rule for pens stored at room
temperature, it is usually two years from the
date of manufacture or one year after it is first
used. However, the cap must be on the pen
when not use to prevent evaporation.
5-5.5. APPLICATION OF MIL-DTL-81706 FORM VI
(TOUCH-N-PREP (TNP) PENS). The repair of damaged
chemical conversion coatings on aluminum surfaces
can be accomplished by using Touch-N-Prep (TNP)
pens (see Figure 5-2). The TNP pens are authorized for
touching-up small surface areas requiring either
Class 1A or Class 3 solution. Use of TNP pens does not
require water rinsing or wiping-off following applications,
thereby minimizing hazardous waste generation. Empty
pens can be returned to manufacturer for recycling
using the self-addressed adhesive label and the original
box.
5-5.5.1. To use the TNP pen, remove cap and charge
the tip by firmly pressing tip against a flat surface for
10-15 seconds. The conversion coating solution in the
pen will saturate the tip. Do not over-saturate tip. Refresh
solution during use by pressing tip against the surface.
The acrylic tip of TNP pen can be modified or altered to
form any shape to allow touch up of hard to reach areas.
5-5.5.2. Repair damaged coating as follows:
a. Clean the damaged area and prepare the surface
to be repaired in accordance with paragraph 5-2. Surface
must be water break free and dry prior to using the TNP
pen.
Figure 5-2. Touch-N-Prep (TNP) Pen
Back to Top
