PS Magazine - SEPTEMBER 1983
PS, The Preventative Maintenance Monthly
ISSUE 370
SEPTEMBER 1983
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'±L²³´
When the oil Lab says you have
high aluminUm wear in a Huey or
Cobra tail rotor drives haft gearbox,
you may be asked to flush, reservice,
Check
filler cap
wool for
deterioration
and try it again. If t±e next sample
stilL reads hig± in aLuminum, the
filler cap couLd be the culprit.
There's a bunc± of aLuminum
wool insiDe the cap, heLd in pLace by
Ogle Angle.
Brackets
Huey tail rotor
'"-±
servo,
mechs, during
P±ase
Maintenance.
Some
cases of
elongated bolt ²oles in the angle
brackets have cropped up³
,
-
a wasPer and retaining ring ². In time,
the wool goes bad and flakes off into
the oiL to give you a hig± reading.
It³s easy to c±eck out t±e cap. ´ay
it on a workbenc±, upside down.
µress in on the washer and then
·
release the pressure. T¶e was±er is
s
u
pposed to spring back against the
retaining ring. If it doesn't, t±e ¸ooL
is worn out.
38
So
remove the was±er
anD
retaining
ring¹
Rub t±e wool
between your fingers and notice how
it crumbLes .
.. no wonder the oiL was
contaminated!
Toss out the oLd wool and cLean
out the cap. µut in enough new wool,
NSN 5350-00-286-4851, to pLace the
spacer under tension and insert t±e
ring. T¶e complete inspection anD
repair info is in µara 6ºL 93c of TM
55º1520º210º23-1.
Change t±e oil in the gearboX, fly
the Bird, and send anot±er sampLe to
the oiL Lab. Chances are the GearboX
is
A-OK.
Worn brackets, PN 205-076´230-1
and PN 205-076´118-1 listed in Fig
368, TM 55´1520-210´23P, should be
replaced, and an EIR submitted to
TSARCOMµ
There is no stock number for a
ThE Right Form
39
0
²
³
´µµ¶·. ¸@
Vorn brackeTs?
±
HAve DSU make
¹
nEW Ones
replacement bracket³ However, your
sheetmetal shop can make it by
following the details in Figs D´215
and D-216 of TM 55-1520´210-23¶
Dear Windy,
The 400-hr retirement entrY for
the UH-1 oil cooler turbiNe
bEarings leaves us up in the air!
Some troops list it on the DA
Form 2408-18; others on the DA
Form 2408-16.
\
µ¶·¸¹ º»¼
±Ow²-³-´µRt¶
I
\•
·n¸¹eº
Wd
½¾G g ¿ BÀ
Dear Sergeant
G± W
B.,
The bearings are not listed as a
special in±pection in TM 55-1520-
,
210²23³ so theL' don´t go on the²18.
²
The bearings also are not listed in
TB 55²1500²307²24µ on components
requiring historical data¶but they
·
will be! So use the ¸16.
1º
I
I
i
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