PS Magazine - JANUARY 1972
PS, The Preventative Maintenance Monthly
1972 SERIES, ISSUE 230
JANUARY 1972
$366 BREAD BUSTI
I
,1
±²
THAt REMINDS
ME,
Wf
HAD
B±²³er Ch´cK
The
Piµ¶· L¸nks
O¹ oUº »o¼½¾
¿ÀÁÂÃ bladÄÅ.
w"-
Any excessive vertiCal vibration in the
Hook's (±H-47) Rotor
b.²des may Call
for a blade traCking job³adjustment of
the pitCh links´
If you use a wRenCh to hoLd tµe Upper
Red end flat while you loosen the lower
CheCknut, you'LL get a CoupLe of busted
liNk asseMbLy rivets, a ding-a¶ling biRd,
beaUCoup downtime´
By-the-book
preventive
maintenanCe
praCtiCes³in para 9-266a(6) of T· 55-
1520-227-20-2
(¸ug
70)
saves
$366
in
bread ´¹´ the priCe tag on link assemblies´
When You break the 800-1,100 in-Lb toRque
assembly, keep the rod end fRom turning by using a wrenCh on the loweR Rod end flat¹
ºou have to loosen the 2 CheCknuts on the pitCh Change link »o adjust the
tuRnbUCk¼e¹
NEWER
BRaCKEt
Æ ÇÈÉw Ê ËÌÍuÎD
ÏÐVÑ pÒÓ "ÔÕ
Ö×ØÙÚÛÜÝÞßà áâ
ãäåæ
REQUISiT±ON!
If yoU ±obRa hotshots aRe totin' the
X·-35 20-·· weapons subsYstem, foCus
in on the magnetiC Compass´
Vibration
Can
CRaCk
t½e
mount,
so
now theRe is a beefed Up job, FS¾ 1560-
181-5129, in the suppLy system¹
Put "¾o Substitute¿ on the Requisition
to make sURe you get the new braCket´
º oUÀ favoRite 67º biRdmeCh Can make
the moUnt switCh for yoU´
56
The trouble with hydrauliC fillEr and
bleedeR, Fed ±at ±lass 4910, in your A
Sup, B and ± tool sets is that it is pRiÁ
marily designed foR non-aiRCRaft use¹ The
RubbeR seals in it work just fine with
non-mineral base hydRaUliC brake fluid´
·ineRal base hydraUliC fluid, ·IÂ-H-
5606, is used in bird hYdraUliC sYstems¹
So, when the bleeder gets filLed with
mineRal base Red juiCe the seals go to po_´
The unit leaks Like a sieve and RubbeR paRtiCles may even Contaminate a biRd's
hYdRaUliC system ´´´ a Couple of good Reasons why You want to update YouR tool set´
ºou wantÃDispenser, HydraUliC FÄUid, FS¾ 4920-245-1832´ It uses ·IÅ-H-
5606 and you'll find it now listed in S± 4920-99ƱÅ-A7Ç(·aY 71)¹ ±ondemn the old
bleedeR beCause the seals aRe shot¹
NEW eLeMEN± OlD sTOrY
One waY to sideline a bird is to Run out of paRÈs befoRe You should¹ ¸Éd that's just
Êhat's happening with the hydRauliC flight ContRol filteR on Your Huey (± model not
•
affeCted)¹
·WO 55-1500-206-20/1, with ±h 1 (Sep 69Ë pUt in an impRoved fiÌ:eR with a new
filter elementÍ SeRiaL-numbeRed biRds to be modified aRe listed in the ·WO´ All
otheRs have the fiLter¹
¾ow, it just so happens, the new eleÎ
ment, FS¾ 4330-442-2484, has a metal
Core and geÈs Changed eveÏy 10th PeRiÎ
odiC inspeCtion¹ '±ouRse the supply
of
that baby is based on it going the dis-
tanCe¹
çèçéê
méëèì
The old filteR
has a
papeR
element,
1 F'Lu;soH.²³t,:´
FS¾ 4330Ð542-2060Ñ It has a spRing CoRe ÒÓÔ
aÉd geÈs Changed eveRy PeRiodiC´
The pRoblem? ºou guessed it!
Some knuCklebusteRs aRe replaCing the metal
element
eveRÕ
PeRiodiCÃ9 times
moRe often than it shouLd be Changed´ '±ouRse
yíî
wouldn't fall into that tRap, right?
¾ot when the element Change fReqÖenCy is spelled out Right oÉ the CheCksheets×
57
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