PS Magazine - TB 43-PS-425
PS, The Preventative Maintenance Monthly
ISSUE 425
APRIL 1988
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You can't assume that
j
ust because your bird's armamenT subsysTem is seldom
used, it seldom needs mainTenance.
±Hat kind of assumpTion can cause you a world of hurt. If your ²uey, BlacK
²awk or Chinook has a mounT fOr The M60D machine gun, it needs periodic
cleaning, lubricaTion and inspection.
Cleaning and LubrIcation
If The gun is mounTed in your bird,
clean and lube the mount monTHly.
If you're operating under unusual
condiTions-exTreme
temperaTures,
dusT or sand, humid or salTy aTmos³
phere, rain or snow´clean and lube thE
mounT at lEast twice a month.
±²EAN ThE
p
³NT²E AND
BEAR³NG
BefOre you apply lube, clean tHe
pinTle and bearing wiTh mineral spirµTs,
\
µ¶
¸¹
NSN
6850¶00¶264·9039, like it says in
Para 3¶2 of ±M 9¶1005¶262¶13¸
Always wear protective gloves when using mineral spirits to avoid skin irriTaTion
and inflammaTion.
After you've cleaned and dried the pin T
´
e and bearing on The M23, M2¹ or M¹
l
mounTs, give ºem a light coat of lubricating oil,
NSN
9150¶00¶889·3522.
Use solid Fil» lubrµcant,
NSN
9150¶00·168¶2000, on t¼e pinTle
½
and bearing
sur¾aces of the release arm on the Black ²awk's M1¹4 armamEnt subsystem.
±he bearings in the ²uey's M23 and the Chinook's M2¹ also get a shot of grease,
NSN
9150·00·985¶72¹¹.
40
APR88
Always eyeball your bird's arma¿
»ent
subsysTem
before
operation.
Look fOr loose bolTs on THe pinTle mount
and mount assemblies.
±ighTen any
loose bolTs.
0
º
»
µ³GhTEN ²OOsE
BO¶Ts AND NUTs
Check The e
j
ection control bag Àr
Tears or ToR seams. Make sure The slide
wO·k?
± f .²
___±±
_
41
Áyeball The ammo can assembly fOr
a broken compression spring, damaged
or benT holding plunger, or deep denT in
The can which could sTop The flow of
ammo. Âeplace The bag or can if you
Find any defÃcTs. If you find loosE rivÄ
eTs, replace them.
Ån The ²uey's M23 pinTle mount,
also make sure The pin TÆe posT assembly
is locked inTo The base Tube assembly.
±ighten the sloTTed nut if iT's loose¸
Ån the BlacK ²awk's Ç1¹¹ gun
mounT assembly, eyeball the coTTer pin
and headed sTraighT pin thaT secures the
mount pinTle to The release arm assem¿
bly. If they're woÈ or broKen, replace
them.
¸OOk fO·
BROkEN p³Ns
In
addition
to
before¶operaTion
checks, you have to inspect some comÄ
ponents every 25 Éying hoursÊ ±hey're
listed in The table beginning on Page ¹¶
5 of The ±M.
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