PS Magazine - APRIL 1972
PS, The Preventative Maintenance Monthly
1972 SERIES, ISSUE 233
APRIL 1972
I,
Dear Windy,
I
have A question About th• Huey (UH-1} main Rotor pitch chAnge links
.
When th• lock nuts aL loosE thB± Is som² play betweeN th• threA³s of
th• ba"•´ an³ the ro³ en³µ SV¶· on ne¸ parts. Th• play is gone ¸hen ¹h•
lock nuts are tightene³ º.» no s¸eat¼
½ome of our throttle jockeys say thSL shoul³ be no slop bSfo¾ ¹h• nuts
are tight, tho
.
The mAintenAnce pub ³oesn't say¿ one ¸Ay or th• otherÀ
What are th• Ámits Win³yÃ
SSG R
.
G
±
H
²
There aren't any wear limits-none needed!
Thread tolerance limits, built in duRing manufac±Ure of
the parts, give you slop or play. This is not a weaR area
and does not require limits for the fielD²
Generally, if you have little or no wear on parts yoU³re
not going to see any publisheD limits, Sarge´
If
• t±
:±.1T ²t?l',
,± .
³\V·´µ
Tinkleµ tinkle little spaR ¶·¸ hoW I wondeR What yOu are
?
\
'
/
¹onDer no longerº Hueymechs» ¼hat sounD oF tinsel insiDe the
Uh-1
tail rotor
blade is norMal´
It just so happEns that DuRing manu½ActuRe the ¾luminum honeycomb at the blade
tip is DRilleD to allow ½or installation oF the balance weights
SoMetimes all the resiDue can¿t be RemovedÀ
A
little Áinkle is no wrinkle KeEP the BladeÃ
36
-±²³´µ²³¶.·¸
•
•
³Ere W´g
aµ¶N ·
YAWN [
TiM¸ tO CLf¹n
,±
uP
±.²
º»p¼½¾¿
.²
0
KN·PEep*
MArtHaNCE
³(S´I"nµ ¶ltsH)
À7
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