PS Magazine - MAY 1977
PS, The Preventative Maintenance Monthly
ISSUE 294
MAY 1977
·-
Aircraft parts get modIfIed by
support outfits. SometImes, tho, it can
be down-rIght confusIng for troops to
tell the dIfference between the old
parts and the new ones.
Take the new hydraUlIc servo
cylInder, P /N 205-076-099±7, NSN
165000-148±9077. ²t replaces P/N
205±076-038³7, and prior unIball-type
servo cylinders.
²t's
Important
to
knoW
´he
differEnce between the parts. The new
part has a metal shIeld and no grease
fitting. The old par´ Has a grease
fittIng and rubber shield.
²n using the old housIng the grease
sUpport
hole Is sealed wIth a plastIc plUg scale torque cheCk is neµded. The
during modification. The problem Is bearIng has a hIg¶ly polished, ceramIc
that some troops have ´aken oUt the Inner surface moving agaInst a carbon
plastic pLug and put In a grease fitting, graphite outer race. The caRbon
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graphIte provIdes a dry, solid, permanently±Lubed bearIng surface. So, no grease
fittIng Is needed .
.. grease could contamInate the works.
Also make sure ·the conIcal shield Is snug against the retainer nUt during
cylInder assembly. Otherwise, you¸lL get Increased bearIng wear from dirt and
other contamInants.
you ¹uey knucklebusters
haUl down on the ´ail boom to Insert
´he groUnd-handlIng wheels, keep
yoUr mItts off the ´aIl lIgºt, pLease.
The lIght looks lIke a natural hand»
hold¼but the frame can½t ´ake i´. So,
yoUr support buddIes end U¾ with
some ex´ra s¶eet metal work beefing
up the broken frame.
Just bear down on the tail boom,
OK?
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