PS Magazine - DECEMBER 1979
PS, The Preventative Maintenance Monthly
ISSUE 325
DECEMBER 1979
i
,
±
Before you Huey (UH-lB, D/H)
mechs repLace
a trunnion on the
swashpLate
inner
Ring,
use
your
noggin!
'Course, you have to spread the
trunnion housing ears on the outer
ring to remove and repLace the trun±
nion.
But never use a screwdriver² Too
much
spread
and
the
aLuminum
casting wiLL become sprung³ From
then on it´s onLy a matter of time
befOre metaL fatigue sets in, a crack
deveLops .
.. and maybe a crew buys the
farm.
·
What you wAnt is a controLLed
spread of tµose trunnion housing ears
and you get just that by using the tooL
shown in Fig
5-38
of TM
55-1520-
210±23
(Feb
79).
The dimensions on
how to make the tooL LocaLLy are
incLuded¶
prevent
damage
to
swashpLate, even ·hen using the tooL,
never tighten the boLt more than
3
screwdriver h1ne±±²
fLats (one¸haLf turn) past finger¸tight¹
²7
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