PS Magazine - TB 43-PS-456
PS, The Preventative Maintenance Monthly
ISSUE 456
NOVEMBER 1990
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OH-58
·
Clean OH-58Nc blades with dishwashing ±ompound,
NSN
7930²00³880-
4454. Rinse with water and dry with soft ±loth,
NSN
7920³00³044³9´81µ
Then apply an even ±oat of nonsili±one wax. If wax is not ava¶lable use
±orrosion preventive ±ompound,
NSN
8030·00-838-7789µ
clean the OH³58D blade grip, boLt and eXpandable bolt with solvent,
NSN
6850³00³´74³54´¸, and wipe dry with rag,
NSN
79´0³00¹´05-¸7¸¸º Then apply
±orrosion preventive ±ompound,
NSN
8030-00-´3¸³´345, to blade bolts and
Fying sur»a±es of blade and grip like it says in Task 5³1-5, TM 55³15´0-´48-´3.
AH-64A
Apply a thin ±oat of ±o¼rosion ±ompound,
NSN
8030³00-938-¸947, to remove
grime, oil, grease, dust and water saturation ½om ¾pa±he blades. Then Wipe
with a ±lean ±loth,
NSn
8305-00¿64¸-5606, to remove the ±ompound along
with loosened soil and other residue.
To ¼emove salt or salt wate¼, Àush the blade tho¼ougÁly with ½esh waterÂ
Then blow dry with ±ompressed air and sp¼ay the blade with ±orrosion preventive
±ompound,
NSN
8030³00¹938³1947µ Remove ex±ess ±ompound with a ±lean
±loth,
NSN
8305-00-64¸³5606, to avoid attra±ting dust, like it saYs in Task
¸³5³4´ of TM 55³¸5´0³´38-´3-¸Ã
avi tion Ground Power UnIt.
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ÄoÅ
of aviation ground poweR units
(²gp³)
are being _u±ned in fOr repair
with burned-out hydraulic pumps.
You operators can avoid many high²
dollar replacements simply by check³
ing the level of the hydraulic Fuid res´
ervoir beµre and during operation.
If you run
tÆe
²gp³
without enough
hydraulic
fluid,
you'll burn up
the
pump.
BeǼe you swit±h on your ¾GPU,
make sure the hydrauli± reservoir is Èt
Least
3
ÉLl. Êow Àuid level ±ould reË
sult in hydrauli± pump damage. If it's
below that leveL, add Ìuid.
Make
sure
the
hydrauli±
module
reservoir
sele±tor
is
set
to
¾GPU
position.
Du¼ing operation, ±he±k the level
often to make sure it does not FLL below
±
ÉllÍ If the Àuid fÎlls below that
level, swit±h oÏ the unit and add ÌuidÂ
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Av±at±on Messages
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If your unit hes not rEcEivEd a mEssagE you Hav» an ¼ntErEst ½n,
chEck with your nExt highEr hEadquARErs¾
AH·1·90·05,
SOF, Maint Manda-
tory, AH±1 Inspect swashplate and
suppoRt assembLies, 022200Z Ju²
90.
AH-1±90-06,
Maint Mandatory,
AH±1 inspect and replace nuTs,
P/N AN320³6, NS´ 5310µ00µ176¶
8110, 052230Z Jul 90.
OH-58-90-08,
SOF, ·ech, rev to
ref ¸(¹) and ¸(2) SOF Msg
·63¶A¶700/720 turbine engºne
recaLl, 102130Z Jul 90»
OH²6±90³06,
SOF, ·ech, rev to re¼
¸(1) and ¸(2) SOF Msg ·63µA½
²OV90
700¾720 turb¿ne engine recall,
102130Z Jul 90.
UH-1-90-05,
SOF, Main! MandaÀ
tory, UÁ¶1 ÁÂ, ¿nspect improved
paRtIcLe separator, 121900Z Jul 90Ã
U´8-90-02,
SOF, Maint Mandatory,
UÄ8F, BE±65, BE±A65, BEÅ65±80,
and BEµ65ÆÇ80, amended inspect/
Èod fuel fillÉr and cap, 20¹930Z
jul 90Ê
BE65µ9¶²02,
SOF, MaËnt MandaÌ
tory, UÍ8F, BE¶65, BEÎA65,
BEÏ65Ï80, and BÐÍ65µÇ80Ñ
amendeD inspecT/mod fuel ¼¿LLer
41
CAT ³ EIR Pho´e:
AUTµvµ¶ 6·¸-2¹66
(2º HµURs)
cap, 201930Z Jul 90Ã
CH-47¸90·11,
SOF, Main! MandaÒ
tory and operational, InspeCt fuel
pump ground for ÓÔÄ47¸ only and
rev fuel systeÕ emergency proceÌ
dures for aLl ÓHµÖ7Ó/×, 312030Z
Jul 90Ã
UH-1-90-ASM-06,asm¹
UÁ±1ÁÂ
and Eر1 HÙ, coLd weather use of
ÚÛb moment spring and Úub
resTraint, 172030Z Ju² 90Ã
AHº1·90·ASMº05,
ASM, AÁ¶1
canopy removal system, 24Ü900Z
ÝÞul 90.
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