PS Magazine - AUGUST 1984
PS, The Preventative Maintenance Monthly
ISSUE 381
AUGUST 1984
1±
i
I
Keep in miNd that once its wire is
gone, the MX-306 is no gooD. The
hEadshed doEsN't Need it fOr refill or
rEissue. Check with your support fOr
disposition.
Finally± be²re you set o³f, be sure
you have your T´-33 tool kit. Splicing
the new wire is tough without it. µrder
the TL-29 knife with ¶S¶ 5110-00·
240-5943; tHe TL¸13 pliers with ¶S¶
5120¹0-247-2063 and the CS¸34 pouch
with ¶S¶ 5140-00º498-8898.
TL-29 knife
I
TE±33 tool Ki²
i
:
3
:
(
;!
:
THERe
MUST
B±
SOM²t/!NG
³h´sµ
OLD
mX-30b¶
Ar· goD F¸¹1
Puº Iº d»wn
IN the field± your job is to get the wire
dowN aNd keep thE liNes opeN. That
mEans keeping the wire out of the way
of man aNd machine.
µverhea» is one way. A lance pole
or wire haNger does the trick. So will
a handy limb or two when you can fiNd
thEm.
An ea¼y way to sling the wire over
tall branches is to tie something
heavy½like a discar»ed howitzer pro¾
jectile nose plug¿to one eNd.
Trenches are handy fOr crossiNg
roads. See FM 24ÀÁ0Â Ãield Wire aNd
Field CablE TechniquEs± for more on
laying± recovering and splicing wiÄe.
f
Pick Iº Up
µnce your fieÅd work Æs doNe± and
yoUÇvE gathere» up your ÈileÉ of wire±
you neEd to know what's good Enough
to use again.
wir³ for
damage
Look the wire over closely as you pÊt
it back oN rEels. Look fOr cuts± splices±
worn spots or iNsulation damage.
If a bad spot covers less than 3 iNË
ches of wire± tape it. LoNger ones have
to be splice».
Put your recovered wire to the test
49
tÌ make sure itÇs good to go Next tiÈe.
Íse a multimeter to check fOr loop
resistancÎ. Goo» wire will show about
212 ohms per mile at ÏаÃ. RememË
ber that temperature a³Ñects resistance
aNd resistance chaNges proportionateÒ
ly with length. Thus± a half¸mile of wire
would test out at 106 ohms at ÏаF.
Íse this chart to figurE resistance±
giving yourself a
¼
15 ohms leeway pEr
mile on listeD values.
temp
fa
A coNsiderably higher than normal
reading mEaNs bad splices or a
Ó
break
in the wire. Too low indicates a leak
or short circuit.
If it passEs the resistance test± but has
more thaN 4 splices pEr halfÔmile± itÇs
good oNly fOr traiNiNg. Õf it Öil¼ the
splice test± save what yoÊ can± and turN
iN the rest. Check with your support ²r
the procedure.
When you buN»le it up± ²rget abo×t
cuttiNg it into strips. ItÇs usÊally uNË
nEcessary and always daNgerous. Pص
is interestEd in the weight± not the
lEngth of ×nserviceable wirE.
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