PS Magazine - MARCH 1982
PS, The Preventative Maintenance Monthly
ISSUE 352
MARCH 1982
Ll5±E,
ROT .±²
WHAT YOU Say
MAKES seN³´µ_¶
YE/
weM hIs uNC²f
m³nto´µD ¶·¸R ¹rdº»¼ ½¾
Co·k¸D
¿P ÀÁi VÃÄ ÅÆp
ÇcÈ
rd
IÉÊËÌÍÎ
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Ï(ÐÑ.Ò ÓÔÕÖ×ØQÙÚÛ ÜÝ
'yO±
When you Black Hawk types have an engine elecTrical problem, don't blame
The elecTrical control Uni±
(eCU)
right off. MosT removed
eCU²s
check oUT
ÞKß
InsTead, eyeball Para 1-46 in ²M 55³2840³248´23 on th
²700 eNgineµ ¶here you·ll find
/"
the troubleshooting pOop To
Jàáâ ãäåæjçè éêëì íîï
ð
ð
ð
ñò óôõ ö-39 ÷øùGúûüýþÿ
p¸po¹t the problem by Usºg
ĀāĂ㥹Ćć Ĉĉ ĊċČ
³u´
The
eCU
circuit conTinuity tesTer»
²hen, follow the ste¼³by³sTep proce
c
ures in the pub to isolaTe the problem
eiTher to the engine or aircraft.
²ake the correcTiVe action lisTed and you've ½robably got it made in The
shade. If not, then focus on the
eCU.
¾ara 7¿13 in the engine pub has The word
Àn inspectingÁ and correcTing the problem.
You may not have to replace the uniÂ. For exam½le, you can STraighten bent
sockeT pins in elecTrical connectors.
ÃeVer shorT circuiÄ The sÅpply sysTem, bird mechs, by replacing a good
eCU.
-¼¼½
f
w
o
®
FO
±O
¾
@Ii²
®
³´
¿À
lfyo_urunLtha1Notrec±vedameAsage
UH-1±81-²³
SOF Maint mandator msg
standaRd ai±c±aft lowe± fo±wa±D wing
IN whiCh you have an ²nterest CheCk w³Th
²e-To±quinG of main p³essu±e ±egulato±
attachment bolt ´²STSµMEC 040135Z
your Next higher headquaRers.
'valve hold¶·own sc±ew¸ ´²STS¹MºA
Nov 81
AH´1±81-34
S»F Malnt mandato±y¼msg
•0418½Z Nov 81
CH±47·±15
SOF MaLnt mandato±Y msg
²e-To±quing of main p±essu±e ±egulato¾
OV±1±81-04
SO¿ MaÀnt_mandato±Y msg
notIfYing maÀnt pe±sonnel to pe³fo±m a
valve holdÁdown sc±ews ²STSÃMEA
²eÄTo±quing of main p±essu±e ±egulato±
±e.cu±±ing inspection on T55ÅÆ-11ASA
Ç418½Z Nov 81
valve holdÈÉown
sc³ews
²STSÁMEA
engÊne
va±iaBle
inlet guide vanes
AH±1±81-35
SOF MaËnt mandatoÌ msg
0Í18½Z Nov 81
ÂÎSÏSÐÑEÒ 061600Z Nov 81
AHÓ1 main ±oto± Blade
PIn
540Ô011Õ001Ö×,
U-21-81±02
Change to SOF msgØ
CHµ47±81-16
SOF MaÀnt mandatoÙY msg
5 NSN 161ÚÅ00Á847Û7461 ´ÎSÜSÔMEA
_
Eme±gencY inspecÝion of UÞ21ß ²U-21à
notláâing maint pe±sonnel to not ±emove
ãä1å45Z Nov 81
æ
UÅ8 and othe± nonµstanda±d ai±c±aft
pilot and copilot jeçisonaBle doo±s on
AH-1-8
¶
¸-36
SO¿ Maènt mandaéo±ê msg
ëowe± foìa±d wiíg attachmeînt Bolt
CHï47ðñ/C ´ÎSÏSòMEC 242145ó Nov
ô
ÎCSÈCSõö´-1860÷ Ï53 engÊne cleaning
´ÎSÏSøMEù 06ú110Z Nov 81
81
p±ocedu±es ´²STSÈMEA 241830Z Nov
U¹º-º1-01
SOFû Eme±
"
QencYü ýnspection
´at
1
Eµ¶ PhoNe:
AUTOVON 693-2»6
81þ
of U-21ÿ ÎU-21Ā ā-8 and oĂheă non:
(24±lr)
č7
Ď
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