TM-1-1500-344-23-2
AIRCRAFT VOLUME II
TECHNICAL MANUAL; CLEANING AND CORROSION CONTROL
APRIL 2009
TM-1-1500-344-23-2 - Page 115 of 240
NAVAIR 01-1A-509-2
TM 1-1500-344-23-2
15 April 2009
6-11/(6-12 Blank)
of structural tubing in accordance with the finish system
designated in the applicable maintenance manual. Paint
in accordance with Appendix A (Navy) or TM
55-1500-345-23 (Army). All bolted or riveted caps or
components shall be installed with faying surfaces and
fasteners wet using MIL-PRF-81733 sealant.
6-20.1.2. Interior surfaces of tubing having closed
end(s) shall be coated with corrosion preventive
compound (MIL-PRF-16173 Grade 2 or 4) using the
fill-and-drain method of application through holes located
near each end of the tubes. These holes shall
subsequently be closed by installing blind rivets using
MIL-PRF-81733 sealant and overcoating the rivet head
with the same after installation.
6-20.2. STRUCTURAL MAGNESIUM ALLOY TUBING.
All surfaces of tubing shall be treated with magnesium
conversion coating (AMS-M-3171) in accordance with
Chapter 5 and painted with the finish system designated
in the applicable maintenance manual. Install all parts
onto the tubing with all faying surfaces and fasteners
wet with MIL-PRF-81733 sealant.
6-20.3. STRUCTURAL COPPER ALLOY, STAINLESS
STEEL ALLOY, AND HEAT RESISTANT ALLOY
TUBING. The interior and exterior surfaces of these
types of tubing do not require a finish system. However,
to prevent galvanic corrosion of other metals with which
these types of tubing are in contact, install parts and
attach tubing with faying surfaces and fasteners wet
using MIL-PRF-81733 sealant, or AMS 3374 sealant
for high temperature areas.
6-20.4. STRUCTURAL CARBON STEEL TUBING.
6-20.4.1. Exterior. All exterior surfaces of steel tubing
assemblies shall be finished with one coat of
MIL-PRF-23377 or MIL-PRF-85582 primer, followed by
two coats of MIL-PRF-85285 polyurethane topcoat.
The topcoat color is specified in the applicable
maintenance manual. Apply primer and topcoat materials
in accordance with Appendix A (Navy) or TM
55-1500-345-12 (Army).
6-20.4.2. Interior. For tubing assemblies without welded
or crimped ends, coat all interior surfaces with
MIL-PRF-23377 or MIL-PRF-85582 primer using a
fill-and-drain procedure. Where practical, in lieu of
fill-and-drain procedure, two coats of primer may be
spray applied to interior surfaces of all assemblies.
6-20.4.3. After coating the interior, clean the exterior
surfaces to remove any residual primer. Seal all holes
in tube walls by installing blind rivets wet with
MIL-PRF-81733 sealant in the holes and overcoat the
rivet heads with the same after installation. Assemble
all tubing assemblies manufactured by riveting or bolting
members together on fittings with faying surfaces and
fasteners wet with MIL-PRF-81733 sealant.
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