PS Magazine - JANUARY 1981
PS, The Preventative Maintenance Monthly
ISSUE 338
JANUARY 1981
Do you get fluctuation when
you're checking RPM readings,
especiaLLy on any tank In the
M48/M60 FamiLy group? You might
have a bad tachometer cable.
RPM's
jump
around
beteen
2000
and
5000?
Unhook the tach cable adapte±
From the engine and stick the ²robe
oF the pulse tachometer (12258875)
directLy into the tachometer drive
outlet in the engine³ ThIs should giVe
you a steady reading´
±
The TM gives the limits for total
system current instead of the Limits
for individuaL battery current.
Where you have more than one
series paIr oF batteries, as you do in
tanks,
seLF-propelled
howitzers,
GOERs and 5-ton trucks, you have to
take current measureµents From
each series pair and add them
together to get the total system
current.
²
You need a special adapter to
do STE/¶CE tests tha· calL For a tAch
pick¸p if you're testing the Gama
Goat´ This adapter can be ordered
using PN 12¹9º274 a»¼ ½SCM
".±²
¾9207. There¿s no NSN yet.
G
Yo¸ won¿t be able to Find the
"Diagnostic Connector ÀssembliesÁ
(DCÀ) that your STE/¶CE manual
taLks about They wilL be on most
Future Àrmy Vehicles but no vehicLe
in the FieLd has them yet. Ãhe
dÄagnostÄc pLugs will be mounted on
the dash so you can hook them to the
STE/¶CE.
'
The current TM 9Å49¾0Å571-
12&P ¼oes not show you how to
check the timing on the M880 truck,
but it can be ¼one. ½irst connect
fIGHT SOLDiER!
diAgNostiC
c±n²e³´µr
AS±E²BLI³´
W¶l·
0£ o¸ ¹hº »a¼½ ¾F
¿UtuÀÁ VÂÃiÄÅÆÇÈ
STE/¶CE to the M880 as if you were
1-iI:±²_
going to do the power test (Test 13)Æ
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