PS Magazine - NOVEMBER 1975
PS, The Preventative Maintenance Monthly
ISSUE 276
NOVEMBER 1975
r
I
"YOU
BE THE
When inspecting the numerous
rotating, spinning, turning parts on
aircraft, yoUr guidE is the wEar limits
givEn in the bird maintenance pubs.
A
manual may Even mention a more
detailed inspEction-which may, or
may not, bE needed±
TakE the Huey tail rotor drive shaft
clamps. StEEl clamps may be checked
by magnEtic particle inspEction²
aluminum clamps by thE fluorescent
pEnetrant method.
Does this mean such a detailEd
chEck is ro³´iNEly NEEdEd, say, evEry
500
hours when you repacK the
couplings? µosir¶e¶e¶e!
Check the drive shaft clamps for
nicKs, gouges and scratchEs.
A
scratch
CLEAN anD
. RUSE
±eW
MeAL
²l³M´NT
T·E ElEmEnt, µSµ
4330-00±106²
6764,
P/µ
205±0³6´034±³,
is metal
a
¸
n¹ it's non¶ExpEndablE. ThE old
ºaºEr ElEmEnt, µSµ
433µ±µ0±442±
2484,
gEts tossed out EVErY
100
hours.
JUDGE!'±
in
Fact is, any time you suspec» hidden
damage on a bird part, maKe the
scientific chEck.
{
.±
-±
Some of the papEr ElEments have a
wirE mEsh and have beEn mistaKen for
the new metal ones. So, eyeball the
stock number or ºart number stamºEd
on thE ElEment.
µevEr discar¹ thosE tough metal
jobs. J³st clEaN ¼Em with ¹EtErgENt½ or
by chEmical or ul´rasonic mEans, EvEry
1µ00
hours ¾ . .
¿
soonEr if thE filtEr
in¹icator button ºoºsÀ
Áeeº using ´·osE ºapEr ElEmENts
until thE suºplY is ExhaustEd, t·o.
A´Er awhilE, thE nEw mEtal ElEmeNts
will take ovErÃ
¶·
SENd ThE
"
EtE² PART
-±²³
/}
Äome Áiowa taiL rotor gear boxes
arrive at overhauL with Extra partsÅ
Æ some with not enough paRts.
The Çitch changE mechanism, for
onE, has been shipÇEÈ with the gear
Box. This mEans a unit wiLl end uÇ
¶¸
short Çitch change parts because a
repLacEment geaR box won¼t havE the
mÉchanism.
For another, gear boxEs have
arRived without thE chip detector
bayonet. µow, any on¶the¶stick mEch
Knows ÊËat the fEmaÌe and male Íust
natMaLly go togetÎerÏ
Without the male bayonEt, extra
ones havE to be bought by suÇÇort so
that a complete gEar box can be sent
bacK to the fiEld.
ÄurE, it may taKE a littLe more timE
to disconnect the chip detector at the
outboarÈ End of the bayonet. Ðut you¼LL
hoLÈ down the tab for rEÇlacEment
parts.
Ñhe Òiowa Çarts pub clues you on
what parts are incLuÈEd in a complete
tail rotor gear box assembLy.
Back to Top Back to Top
