PS Magazine - JANUARY 1985
PS, The Preventative Maintenance Monthly
ISSUE 386
JANUARY 1985
I' ve
been
stationed
it's
always
the
same .
.± when we puL the rotor
head and blades, we have to
prop them up with p²³ows or
mattresses ´.µ or
whatever's
available¶
while
the
rotor
system is of the aircraFt·
This balancing act becomes
costly iF the blades, head or
transmission
Fall
oFF
the
mattress¸
40
Get a 21±- or 5²ton truck wheel from the
can point. Lay the wheel³ on Its side´disH
side upµ ¶ave your AV·M weld a 24¸in piece
of 2¸in Tube steel post to the center. Get a
¹2¸In piece of ¹1±¸in tube steel to go inside
the first tUbe. Weld a piece oF %ºin plaTe
" ·•-±²
steel to one end of the post. »he pIece shoulD
measure 4 inches by ¹4 inches for a KIowa;
4 inches by
2
inches for a ¼uey; and 4
inches by 4¹ inches for a
½
Cobra.
»o the ends of the steel plate, weld a ¹ in
x
4¸in stRiP of the %¸in plate steel.
W¾ap the steel
¿
plate with cushioning
ÀaTerial (foaÀ rubber packing material
works well) tO protect the blÁdesÂ
·nserà the smaller posÄ iNto the larger one
Ánd drill
Å
a series of %¸in holes an inch
aPaÆ. »hat lets you adjust the blade heIghÇ
Èse a ÉʸIn lock pIn,
NSN
53Ë0¸00¸482¸
¹457, to hold the post at theÌProper height.
»heÍ lock piN isn't on the
AMDF
so youÎll
,._³´
have to order using a
DD
¹348¸6. You can
c-_:±
use a 1ʸin nut and 2ϱ¸in loNÐ bolt unTil
3/8ÑIn ¶oles
Ò2ÓIn »uBe
»he uprights are aDJustable, so when
setting up tHe head assemÔly you can get
the 3ºin elevation rise on the end of your
blades, and you donÎt Have to balance or
adjust theÀ when putÃing them back on
your helo!
JAN 85
41
your lock pin coÀes in.
\
1±
l
L²
\
²·
µ
¶
¸
³
¹º»¼
´
½
.
¾
¿À
µ¶
¸
¹
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