PS Magazine - SEPTEMBER 1976
PS, The Preventative Maintenance Monthly
ISSUE 286
SEPTEMBER 1976
Spray no water or le±;ing soLvent²
on the he³pLess core of your OH-58A's
oi³ cooLer or directLy on the pyLon
isoLation mount.
PROTECT YOUR
OIL COOLER
WHiLE CLEANiNG
YOUR BiRD
´hieLd the cooLer with a LocaLLyµ
made cover, which you remove after
cLeaning your bird¶
Water or soLvent can run tBrough
the core of the oiL cooLer assembLy .
.·
down into the fabric air ducts .
.. aNd
get trapped in the Lowest part of a
duct. The trapped Liquid causes the
duct to rot.
¸iquids can work uNder the edges of
the top boo¹ of the pyLon isoLation
mount and get iNside the mouNt.
The eLastomeric dampeNer of the
mouNt can separate from the mount
frame, Leading to airºframe vibration
and LateraL spike k»¼ckin½¾_¿À
_
o
ear Wind
y
,
4 6
O
f
T
55
-
15
20
-228±
Sequence
·
·
²
t the
20PMP (MaY 72
)
saYs tO mspec
d
.
³Ounts FOr s ecuritY
´
cracks an
engIne
TherE is nO inspectiOn pOOµ
1:
m;
55-
15
20
-228¶20 (¸ct 72J,
hOw
v
e
¹
5-
15
20
-228
-3
4
(NO
v
72
)´
T
tO
dYe penetrant
º
ara
-
t
±!
'
tu
S:
s
and welds »Or cracks¼
mspec
shOulD dO at the
th ½s what we
I
¾
s
I.
.
I
³aintenance /
e
v
e
´
OrganIzatIOn a
WindY?
Dear Windy
F:
,
SP
6
R
.
S¿
-
Ig
5-18±
paGE
² 4
2³8´µ0
{Oct
7
7¶ t ··¸¹º»¼½
fo
R t
he t±
R
qu
e t
ub
²
e
1ves ³
am
a
ge
limits
assemb
LY.
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