PS Magazine - SEPTEMBER 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 250
SEPTEMBER 1973
Craze mArks, discoloration and
scratches on the ChInooK (CH-47)
±S±S INdicAtor covers are AcceptAble
if you cAn reAd t²e indicAtINg bAnds.
BUt³ why ·P´sh your lUck?
T²e µNtegrAl S¶aR µnsPectIon Sys¸
tem iNdIcator cover Is MAde of cleAr
PlastIc¹ Liºe other trAnsPaRent plAstIc
on »our baby³ It can get ruined by
c¼eaning FuIds³ thinners And solVents
u½ed IN t²e rotor blade AreA¾ ¿o³ KeeP
'em oÀf the coVer³ pleAseÁ·
KEEP INDICATOR
COVER CLEAN .
Â
.
±±± NO THINNERS OR SOLVENTS
To cleaN dIrt ÃoM t²e cover³ never
r´b the plAstIc wit² a dry cloth
Ä
or
youÅl¼ scrAtc² ItÆ Çse mIld ²and soAPÈ
ɼ¼owed by a cleAr water rinseÊ
To get rËd of aNy ro´gh stuÌÍIl³ greAÎe³ gritÏ´se A rAg moisteNed
wIth A¼i¶hAtIc nAPhthAÊ
±n cold weAt²er Never try to c²iP Ice ÐÑom the IndicAtor cover You
cOu¼d breAk the vacUuÒ seal AÓd thAt woÔld meAN A blAde chAngeÕ
Ö¶×ly WArm Air orØ Use IsoPropyl alcohol on the plAstic to reMove IceÙ
YoUÅll ÚÓd
al
thE cleANIng mAterIals yo´ need to keep t²e coVer cÛeaN
lIsted in t²e coNsumAbÜe mAteriA¼s tAble of The ÝooK orgAnIZatIonal
TAKE CARE WITH TaRE
Dear Windy,
When instaling the hydrauLic
brake on the axLe of our Mohawk
(OV-10)
Landing gear we go by
The Book.
±he poop on page
4±138²
of
t
55±151³±2³4´2³µ1±1
(Feb
7³)
says to secure the brake witH
boLts, wAsHers and nuts² ±he
nU³ are torqued to
6³±85
Inch-
pounds´
±he troubLe is, the boµs rotate
in t¶at torQUe Range´
·s the torque spec on those
nu³ correct, Windy?
sp6 r² B² W
³
±
START NUT RO´ATING
FROM TM
FiGURE
FRIC´ION iT TAKES TO
0
TORQUE SPEC
c:
FiNAµ ´ORQUE
(EXAMPLE: 15 iNCH-µbS)
¶·0¸85 INCH-LbS)
C¶
¶75¹100 INCHºµbS)
DeAr SpeciAlist
» ¼½ w½,
Þes³ indeed!
ßemeMber t²At those n´ts³ àSá 5310-807-â469³ Are A self-locKing typeÁ
ãArA 6ä152k In Tå 55äâ500ä204-25/â (æpr 70) on generAl prActices
sAys self-locking nçts hAve An internAl ÃictIon eleÒentÁ T²e torqUe of
t²is ÃIction³ cAlled tAre torq´e³ mçst be MeAsçred on t²e wrenc² As
t²e n´ts Are tçrned on the bolts beère contAct wit² the wAshersé
So³ Add t²e tAre torque yoU reAd on t²e wrenc² to t²e 60ä85 Inc²äpoUnds
to get yoUr ênAl ëtorque êgçreé
¾9
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