PS Magazine - TB 43-PS-484
PS, The Preventative Maintenance Monthly
ISSUE 484
MARCH 1993
1
It!
OUR
E
NGInE
S MUsT HAVe
A SUFFiCIe±T
COoL• POWN tIME
6±F²R³ a r´Sµ¶·¸!
ake the Apach
e
'
s
engine .± WiTHout
proper
Cool-down, you could ge² a bowed
rotoR³ ´Ha² maKes tHe compRessoµ µotoR
gRinD against the s²atoR blaDes and pos¶
siblY Cause
a
CompRessor aiRfoiL F·iluµe
oR hung
Start.
´he rule
iS
To not cRanK the engine iF
THe ¸G¹
Rea
ding is moRe THan
150° C
(-70±)
oµ
80²C ³´µ0¶c)·
Or
taKe THe ºio»a's engine¼ WitHout
suFFICien² cool-Down beFORe
RE¸tart¹at
least a couple of minutes ½CaRbon
will
bui¾D up aµounD the ¿abYRin²H SealsÀ ´Hen
tHe ²uµbIne blaDe ²ips wil¾ µub and tHe
roTor will bind³
Giving
an
eng
in
e suFfiCiEnt cooL¶
down
time beFORe ReÁtaµting pµevents
pµoblems¼
CH-47 CombTans Parts
Ma²9
¹He comB
i t
s
mi
s
s
io
n fAn shºF »¼ºin½
ing ¾ng anDJtTa¿ing nuts
Âe
noW shown
Ãn Äig
¶88oÀc3ÁÂ55-¶520Ã240´23PÄÅÆÇheRetaInÈ
i
ng
µÅQÆ
É jÊN ËÌÌ0,¶ÍÎÎ0ϵ¶¶ anÐ ÑHÒ
a!4cin
nUT:S NÊN 53Ó0ÔÕÃ8Ö׶468Ø
37
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