PS Magazine - TB 43-PS-434
PS, The Preventative Maintenance Monthly
ISSUE 434
JANUARY 1989
1±
$
ome Cobra crews can't hit the target
with their
20-MM
cannon because the
barrels are distorted.
YoU mechanics can cause distortion
if you don't Restrain the barrel cluster
when you torque the bolt that hoLds the
mUzzle clamp in place.
Bar goes directly
behInd pLate
±se a bar or a wooden pole or blo²k
to hold the barrel cluster when you tor-
que the bolt.
4±
Insert the bar or wooD directLy be³
hind the clamp plate´not a fOot or
Restrain the cluste² as
you to²que the bolt
even a couple oF inches
µ
beHin¶ t·e
clamp pLaTe¸
³f
it¹s Too far bacK, you'll
get barrel distortion when you torque
the boltsº
±se the torqUe wrench to tuM the
bolt very slowly. »f the bolt turns with
less than
7-8
lb¼ft of pressure½ replace
the bol¾ and the self¼locking nut¿
Àorque the bolt to
63´79
lb¼Á.
JAN µ¶
Don't Mix
I
t pays to be caUtious when you conÂ
nect wire cables to yoUr CoBra's
M65
.
line replaceable Units (Ãı's)Å
If you don't taKe the time to read the
label on each wire bundle anÆ match
it to the correct Ãı connector½ you
could ruin the Ãı or other eÇectronic
³D
Labels should be attac·ed to each
wire bUndle. Èf labeLs are missing Éom
any of your Ãı cabLes, get
· V³M
to
reÊlabel 'em so there won't be any
costly mixUps next time you instalL an
Ãı.
r
Aviation Messages
j-±1
If
YOU¸ U¹ºT H»S ¹OT ¸E¼
C½ºvE¾ » mESS»GE YOU H»vE
»¹ ¿¹TE¸EST À¹, CHECk wºTH YOU¸
¹ExÁ HºGHE¸ H½»¾QU»ÂE¸S.
CH-47±88²15,
SOF, Maintenance
Mandatory± Procedure for fuel sam·
pIing when using the extended
range fuel system (ERFS), 212000Z
Sep 88.
AH³1³88-09,
SOF, Technical, One-
time inspect²on of specific seriaL
numbered scissors and sleeve as³
semblies, 192000Z Sep 88´
JAN µ¶
OV´1³88³MIM³01µ
Defective bolt
µ/N K22319¶¸, 072230Z Sep 88´
GEN¶88·02¸
SOF, Technical¹ One-
time inspection for installation of
correct inteºnal por»able fire eXtin-
guisher, 21¸830Z Sep 88¼
OV³1³88-04,
SOF, Technical, Daily
inspection of the spot weld assem½
bly (FS204 a¾» bulkhead), 072200Z
Sep 88¿
AH-64¹88³13,
SOF, Maintenance
MandatoÀ, Tail rotor swashplate
bearingÁslider inspection, 2¸21 ÂÂZ
Sep 88Ã
41
ÃÄÅ
1
ÆÇÈ
Phone:
ÄÉÅÊËÊÌ ÍÎÏÐÑÒÍÍ
(ÑÓ ÔÊÉÈÕ)
AH-1º88-10,
SOF, Technical, ReviÄ
sion to oneÅtime inspection of
specific serial numbered scissoÆs
and sleeve asseÇblies, 211500Z
Sep 88È
AH»64»88»14,
SOF, Maintenance
Mandatory, Énspection of Êain rotor
housing nuts, 282Ë ÂÂZ Sep 88¿
AH-64-88-MIM³13¼
AÇendment to
a MÌM concerning chop collar safe»y
wire, 262¸ ÂÂZ Sep 88Ã
UH-60½88¾MIM-09¼
Ínspection of
tail rotor drive sha¾t spline wear indiÎ
catÏrÐ 272100Z Sep 88Ñ
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