PS Magazine - AUGUST 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 249
AUGUST 1973
It's a capital idea to keep the
hellHole fee oF dirt, sa±ty wire and
other debris, ²uey mechs.
During a Flair or Hover dust is
sucked up around tHe main drive
sha³ at tHe engine intake baF´e.
The particle separator is not
designed to scReen tHis dirt, which
Lodges iN tHe compressor. You know
what that means-a dirty compresµ
sor, robbing your engine o¶ power.
Keep tHe hellhole clean, man!
STICKY SERVOS?
AFter a rigging and test ·iGht to
check your adjustments, eyeBall the
clevis on top OF tHe collective pitcH
hydVaulic cylindeR. The threads
should be coated with sealing comµ
pound.
The compound will prevent water
fom enteriNg the tube .
.. cut dowN
on corrosion.
¸F aNy oF the ·ight coNtrol servos
oN your baby are stic¹ºNg or biNdiNg,
»cus in on the pilot valve bo¼t oN
tHe servo va¼ve. That bolt coUld be
tHe culprºt.
The nut gets torqued to 25 iNcHµ
pounds maximum. ANy mORe Muscle
aNd tHe bolt caN feeze. The bolt has
to turn feely.
58
Any tiMe you Rep¼ace one oF tHose
Hy½rau¼ic cyliNdeR tUbes¾ torque the
¿Àin Nuts tO 50Á70 iNÂlbs aNd tHe
5/16Ãin Nuts to Ä00ÂÅ40 iNÁlbs.
I¶ tHe BO¼ts become ¼oOse, youÆl¼
get eloNgatºoN o¶ the servo MOUNt
HO¼es . . . meaNs cÇaNgºNg tHe servo
aHead oF scHedU¼e.
YouÆre goºNg tO Have soMe oº¼ ¼ea¹È
age ÉOm the NUMÊer
3
aN½ 4 beaRËNg
Pac¹age. ÌÇe sea¼s WoR¹ ÍNe ½URiNg
OPeratºoN. IN a statËc cONÎitºOÏ soMe
Oºl Wºl¼ drºp Past tHe sea¼s aN½ ºNto
tÇe tail PºPeÐ SMO¹iNg WÇeN tÇe
eNgºNe is craN¹e½ UP is NORma¼Ñ
ÒheN ºs lea¹age excessºve? ÒÇeN
oi¼ coNÓuMPtioN is mOre tÇaN Ô. 4
PiNts per HouR, accORdºNg tO tHe Poop
ºN para ÅÂ25 oF ÌÕ 55Ö1520Â2×0Â20
(Se 7
l).
ÌO cÇec¹ ¼ea¹ageØ ÙÚ¼ UP tÇe eNgºNe
Oi¼ taÛ¹ beÜÝRe a MËssËON Þß
I
Or Ô
HoUrs. TÇeN cÇec¹ àOUR ʺR½ FOR
actUa¼ O˼ coNsUMPtËÞN. CÇaNces are
áâOse eNãºNe
ä
sEaÚs aRe Aåæç.
59
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