PS Magazine - TB 43-PS-727

PS, The Preventative Maintenance Monthly

ISSUE 727

JUNE 2013
PS Magazine - TB 43-PS-727 - Page 20 of 33
37
PS 727
JUN 13
M
echanics, has it occurred to you that
forcing multi-pin electrical connectors
in place will only get you broken pins?
In some cases, not only will you
break the pins inside the connector, but
you may have to repair or replace the
cable, too, depending on the damage
caused by forcing connectors in place.
If you have trouble connecting
connectors, you may find that dirt, rust
or corrosion is the problem.
•±
Remove corrosion on plated connector
external surfaces by scrubbing with
non-abrasive pad, NSN 7920-00-151-
6120. For unplated connector external
surfaces, use abrasive mats (A-A-58054
Type I, Grade A), NSN 5350-00-967-
5089. On both types of connectors
always use the least invasive method to
prevent damage.
•±
Wipe away corrosion residue with a
cheese cloth, NSN 8305-00-267-3015.
Then clean the connector inside and
out with isopropyl alcohol (TT-I-735):
NSN 6810-00-983-8551 brings a quart
and NSN 6810-00-753-4993 an 8-oz can.
•±
Remove the excess alcohol and residue
with cheese cloth.
•±
For inside the connector and hard to reach areas
between the pins, use a pipe cleaner, NSN 9920-00-292-
9946. Gently clean pins and let the connector dry
before installation.
All±Aircraft…
Electrical
Connectors
and
Corrosion
here
are some
connector
cleaning and
corrosion
pointers to
knock out
corrosion…
OoF!
hey!
look over
there!!
yeah,
aircraft
ripe
for the
taking!
we’re gonna
make a
mess
outta them!
bring it on
you
nasty
creatures!
yeah,
we’ve got
pm
on
our side!
for
more
corrosion
prevention
information, see
chapter 6,
treatment
of Specific Areas,
in
tm 1-1500-344-23-3
(mar 05),
cleaning
and corrosion
control. avionics
and electronics.
Wipe corrosion
off connector with cheese cloth
Clean entire
connector with
alcohol
Foam swab
works well in
tight areas
Tilt connector
down to allow for
excess run-off
Let the connector dry
for a few seconds. Wipe
off any excess with a
clean, dry cheese cloth.
•±
To prevent future corrosion, lightly coat inside the
connector with water-displacing corrosion preventive
compound (CPC) (MIL-PRF-81309 Type 3, Class 2), NSN
8030-00-546-8637. Tilt the connector down while coating
it to allow the excess to run off. One quick spray with
minimal excess is the goal.
727 36-37.indd
1-2
4/30/13
5:32 PM
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