PS Magazine - JANUARY 1981
PS, The Preventative Maintenance Monthly
ISSUE 338
JANUARY 1981
puterized
tesT
equipment telLs you
i
what is wrong wiTh tanks, personnel
carriers,
SP
artillery and TrucKs. It
checks ouT engine oil pressure an
"'±-elecTrical
sysTems, engine compres
sion, vacuum, dwell and TimiNg, and
many
oTher
Things²even
pressures³
9tE/ce,
Nsn 49f0·±²³12´-Z5µ¶, ¸¹
COVEReD BY TM
9-4±10²STl³´2<P(Fb µ¶) .·¸
L
The
red-banded
transducer
(PN 12258877) is used for both low±
pressure readIngs(O to +25 PS²) and
for vacUum reAdings
¹º
to 30-in of
Hg). However, for vacuum readings,
the transducer must be hooked into
the snubber (P³ ´22588µ´)¶ ·nLess
you make t¸is test wi¹h both parts
hooked together you can damage the
traºsducer.
»he
ignition
adapter,
³S³
49´0-00¼356½7492, you use to test
t¸e engine on the M´5´¾2 famiLy of
%¿¹on trucks sometimes goes badÀ ²f
the engine cranks but won't start
when
youÁRe
testing it with the
»E/²CE, (bU¹ it wILL s¹ar¹ wit¸oU¹ t¸e
»E/²ÃE), yoU should c¸eck for a
ÄÅssible bad ignitioº adapter. Do this
By UncoUpling the Red lead to the
ignition
adapterÆ
ÇF
the
engine
con¹Inues to crank bU¹ wÅnÁt star¹,
screw ÅUt ¹he ignI¹Ion adap¹er FRÅm
the ¹oÄ oF ¹he dIs¹rIbU¹or. Çf ¹¸È
engine now s¹ar¹s, ge¹ a repÉÊcemen¹
adÊĹer. ˺e reason ¹he aÌÊÄteR
goes bad Is From overtigh¹enIngÍ
Hand tigh¹en onLy.
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