Volume 1
20-60-00
Page 16
OCT 01/02
GENERAL INFORMATION
STANDARD PREVENTIVE MAINTENANCE PROCEDURES
(d) Class 3 compounds form a soft film that can be applied and easily
removed at room temperature. They can penetrate 20-25 mm and have a
melting point of 135°F. These compounds can mix with lubricating oil.
(3)
Refer to the Qualified Products List of MIL-C-11796 for a complete list-ing of approved material part numbers and vendors for all grades.
(4)
Precautions for Use MIL-C-11796
(a) Use the same precautions for MIL-C-11796 that we list for waterdis-placing corrosion inhibiting compounds (Ref par. 4.B.(3)).
(5)
Compatibility of MIL-C-11796
(a) As these materials are all usually hydrocarbons, you can apply new
applications of a different compound over existent corrosion inhibi-tors without bad effects.
(6)
Compatibility of MIL-C-11796
(a) The surface does not need to be extremely clean before you apply
these compounds. But you will get better continuous film if you
clean the area first. Vacuum or wipe away loose dirt or other
unwanted matter. Then you can clean the surfaces, where necessary,
with the usual airplane cleaning agents or solvents.
(7)
Application of MIL-C-11796
(a)
These compounds are applied as hot liquids. During application, keep
the compounds in the following temperature ranges:
MIL-C-11796 Class 1 or 1A 170-200°F
MIL-C-11796 Class 2 160-190°F
MIL-C-11796 Class 3 150-180°F
(b)
Apply the compound to the surface with a brush or swab.
(c)
To apply the compound to the internal surfaces of hollow parts,
refer to 20-41-03 of the Boeing Standard Overhaul Practices Manual.
(8)
Removal of MIL-C-11796
(a)
You need to remove the entire compound before you try to paint the
surface. Solvent cleaning is also required before penetrant inspec-tion.
(b)
Dry cleaning solvent P-D-680 can remove these compounds. Methyl
Ethyl Ketone (MEK) or acetone is not recommended.
(c)
When you use solvents to remove the compound, give the area a good
flow of air until the solvents evaporate.
Volume 1
20-60-00
Page 17 OCT 01/02
CORROSION PREVENTION MANUAL
GENERAL INFORMATION
STANDARD PREVENTIVE MAINTENANCE PROCEDURES
CHEMICALCONVERSION COATING
BMS10-11 TYPEI PRIMER (GREEN)
BMS 10-11 TYPE I PRIMER
(YELLOW)
BMS 10-11 TYPE II EPOXY
OR
BMS 10-60 POLYURETHANE
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