PS Magazine - OCTOBER 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 251
OCTOBER 1973
Dear Windy,
TM 55-1520-20920P-1 (Aug 71) fIg 213± Item 32² cals for usIng metaL tube²
P
/
N
114P4038-51³
´'
In our ModeL
B
ChInook. The SMR code shows the engIne
fueL tube Is made by generaL suppoµ and maIntaIned at organIzatIonaL Leve¶
The LIne we have Is FexIbLe te·on, not metaL¸
·
We¹ve been toLd that the te·on ºne
»
Is temporary and It shouLd be repLaced
¼Ith metaL when retu½Ing to home base.
¾s thIs correct?
Dear Specialist R. E.
K.
,
Yes, indeed!
SP6 R± E² k³
The tefon line came about with the use oF an emergency repair kit.
Ask your support to make up ±he metal liNe ²r you. DimeNsions are
lis±ed in Appendix C oF TM 55-1520-227³34-3
(
an 72)´
The tefon line is a good example oF a ±emporary µx¶ It proBably won't
be ±he last. So, use ±he repair parts called ²r in ±he prts puB.
·eFore you Sioux (TH-¸3T) ho±
pilo±s shut down ±he engine¹idle i±
at 2 300 RPM ²r 4 miNu±es, according
to ±he poop ºn para 3-36 oF TM 55-
¸520-226-10 (Oc± 69)»
This cooLºNg period reduces oil and
metal ±empera±ures, avoids car¼
bonized oºl buºld½up aNd minimizes
warpage oF metal parts in the
±urbocharger .
38
IDLe
enGIne
beFOre
sHUT-DOWn
When t¾e cooling air blast on the spinners oF your Mohawk (OV½1)
props is gone, so are the spºnners, hot pilo±s.
Happens¿when you coÀple±e
your landing roll and Áil ±o turn oÂF
the wea±her coNtroL engºne de-icing
switch during coLd weather.
·y the time you ±axi ±o the ramp
and park, it's too late. The spinners
will be blºstered, cracked, warped
and the heating elements burned out.
WEATHeR CONTrOL
PItOT
De-iC±NG
hea²e³
eNG´Ne
WSµLD
@: i
Off
i
®
Those babies cost a bundle . . . over a grand and a halF each.
Whic¾ is why para 3½95 in TM 55-1510-204-10/5 (Ãeb 70) calls FÄr
"wea±her control panel switchesÅOÃÃ,Æ when turning Çom the runway.
You better believe it!
'Course, you also turn the engine de-icing switch OÈ during your
engiNe ground operations check. Turn the switch OÃÃ as soon as you
notice a slight rise in EGT.
39
Back to Top Back to Top
