PS Magazine - TB 43-PS-553

PS, The Preventative Maintenance Monthly

ISSUE 553

DECEMBER 1998
PS Magazine - TB 43-PS-553 - Page 17 of 54
I
f the light-emittIng diodes
(LED)
±n yOur Ml09²seRies howitzeR OR ³992²
seRies ammo ca´µIeR a¶en'T emitTing
L·ght, Could be they dOn¸t have any Sili¹
COne gReASe ON thei´ ContAºtS.
»he siliºOne keeps moistuµe away
f´om the COntaCTS¼ WiThOUt it½ CoR¾O¹
sion F¿µms and ÀtÁs ÂIghTs Out!
ÃÄ an
LED
Äa·ls TO Åight, throw ·t away
onLy if It is damaged o¾ badLy COµrÆedÇ
Èthe¾wise½ ɾy tO
fx
It like thIS:
PS553
2.
ÊemOVe The
lED.
±²
Ëlean The ConTaCt On the
LED
and in
the SoCkeT with Isop´opyl alCohol,
NsN
6810-00Ì753Ì4993, and a
Clean ¾agÍ
4³
Îpply a lighT
CoaT Of siÅiCOne
COmPound½
NsN
6850-Ï-
Ð77-5ÑÒÓ To
the SOCkeT and
LED
COntaCTsÔ
Put ±ight coat of
si±icone oN contact
´µ
ÊeinstalÕ the
LED²
Öf it st×LØ dOesnÙt wo¾k½ get your me¹
ChaniC to t¾oubleshoot the systemÇ
19
DEC 98
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