PS Magazine - TB 43-PS-538
PS, The Preventative Maintenance Monthly
ISSUE 538
SEPTEMBER 1997
AH-4A .±±
a
too many of the holLow pins
taT
keep the Apache's py±on rack in
p±ace on itS FRaMe have water in the²!
Water means corRosIon.
WaTer gets In tHe ho³³ow pin around
the pIn cover p±ate´
µhe plate should be sealed, buT ²any
aRe noT¶ O· those that aRe, ²any aRe noT
sea±eD R¸gHT¹
WHen you re²ove tHe pIn coveR
p±ateº clean all THe sea±ant o»¼ The p±ate
and THe py±on wIth acetone, N½¾
6810²
00³223³2739´
¿¼ you donÀt geT a c±eanÁ
s²ooth suRÂce on THe p³aTe anD py±onÃ
THe ±eÄover sea±ant creates gaps wHere
²oIstuRe can seep ¸nTo the pIn.
WHen
Å
e suÆfaces are clean, sea± THe
coveR w¸th adhesIve, ¾½¾
80µ0²00²
833²9563¶
Water gets in around plate, so .±±
0
,.
0
±². Use fINe bad oF adhes³ve
aro´µd plate aµd screws
PS538
Put THe adhesIve on tHe p±aTe. No
need To glob It on´ A ÇIne BeaÈ around
tHe p³aTe anD screws wI³± Do tHe trIcKÉ
Êe¼ore you
puT The plaTe bacË,
Though,
I
PIn damaGed?
j
check the
pin ÌÍr
Damage
anD to see
i» itÎs out-
ofÏRound´
ÐaÑe
suRe all THe
²oÒsTuRe
is Re²oved
·Ro² The
pin cavityÓ
Ôe»ore you ¸nseRt tHe pIn, ±ooÑ
close±y at the bushingÕ insIÈe the pyÖ
±on× CHeck tHe surfaces ÌÍR any scoRØ
ing oR ²eta± Trans¼eR anD ±ook »Ùr
gouges anD scratches´
Ðeasure The inneR DiaMeteR o¼ tHe
buÚhIng to see I¼ ItÛs out
Ï
o¼ÜrounDÝ
Þollow PaÆa
·6
in ßÐ
·²¸520²238²
23²8
·Ír wHaTÀs a±±owed and noT a±à
loweD conceáÒng da²age to the bush-
ings anâ the pin.
¹º
SEP
º»
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