PS Magazine - FEBRUARY 1986
PS, The Preventative Maintenance Monthly
ISSUE 399
FEBRUARY 1986
I
I
iI
Amperage Test
Hook up to the alternator and cAble.
With the W5 power cabLe connected
between a baTtery and the V±M (Vehi-
cle ±est Meter) and a W4 transducer
cable conNected to J2 or J3 plug, hooK
up ±² 11 test probe³
CLamp the probe around Circuit 5
cabLe betweEn the alteRator and batte´y,
with the probe arrow Pointing away
fom the alternator.
Connect TK 11 probe to
c±Rcu±t
5
10-12" from
alteRnator
Make sure the proBe is 10 to
µ2
inches fom the aLte´nator connection.
±his'll keep fom getTing messed uP
with a seconda´y magnetic Feld o´ othe´
electrical inter¶erence.
·¸er doing con¹dence tests, you'´e
ready to test the charging system's outº
put cu´rent by dialIng ±est
9
into ±»S±
S»¼»C± switches and cranking the
engine ½r just a moment.
With the vehicLe engine o¾, press
±»S± switch until C·¼ appears on the
¿»·DOU± DÀSÁ¼·Y³ ±hen wait ½r
the o¾set vaLue to light up on the
display. ¶ itÃs between pLus (
+)
225
and minus (Ä) 225, staÅt the Ængine,
turn on the vehicle's lights and other
vehicleÇrelated eLectrical powe´. Set
engine sPeed to Èst idleÉabout 1,500
¿ÁÊË
Áush ±»S± switch again³
̶ the´eÍs no cu´´ent ouTput ´eading,
looK ½´ loose alte´nato´ drive BeLts, a
bad
alternator or voltage
reguLator,
BroKen or loose cable, corrosion o´ poo´
connections.
À¶ the V±M ´eadings slowLy decrease,
like "15.5, 15, µ4.8, 14.5, 14.2, 14,
13³7,Î the aLteÏator is doing its job³
STE/ICE In-Testers Out
De±R H±lf-M±S²,
I'³ uSinG ´µE/ICE (¶i³Plified
µeS² EquiP³en² foR In²e·±l Co³¸
bu¹²ion EnGineS) foR ²eS²inG ²he
vehicleS in ouR ³±in²en±nce ShoP.
Do I ¹²iLl need ³y o²heR ²eS² equiPº
³en² Such ±S ²he GeneR±²oR ±nd
vol²±Ge ReGul±²oR ±nd ²±ch»dwell
²eS² Se²S?
´FC D.¼.C½
Dear Sergeant D.
C C,
No! Wen you hve ST/ICE You
turn
in ±oUR otH²r tes³ se´s tHrµ ¶o·¸al sUppL±
cHa¹ºe»s¼ I¹strUct½o¾s for test set tUm-i¾s are ½¾ ¿He Àpec½aL IºFoÁa³io¾ seÂýoÄ
of your tooL sÅt sUPPÆÇ cata»ogs, sUÂÈ as SC 4910É95ÊCËÊA74 for ³Èe NoÌ 1 CoMÊ
1-.±
ÍÎn sHop set and SC 4910Ï95ÊCÐÉÑ72 foÒ tÈe NoÌ 2 CoMÍo¶ sHop se³Ó
lL_
S²E/³´E.
Skinning a Tachometer
±he´eÃs mo´e than one way to hook
uP the ±² 34 pulse tachomete´ ½r
testing diesel engine ¿ÁM³
Connecting di´ectly to the engine
tachoÐete´ outPut can Be ´isKyÉas on
the MÑ4ÒÓse´ies 2 Ô/2Óton TÕÖcK whe´e
t×e hooØuP is cÙose to Èn blades and
d´ive BeÙts³
Ànstead,
connect
to
the
vehicÙeÚs
tac×oÐÛte´ cabÙe. Just unhooK the cabÙe
Üom the Tac×omete´ÝBe×Þnd t×e iNst´Öº
Ðent PaneßÝand connect t×e ±² 3à
tac×omete´ á´ive adaPte´ to the Pulse
tacâoÐete´³
MaØe su´e, t×o, t×at the tachoÐete´
caBÙeãs Þn goä s×aPe³ Âå t×e´eæs a delay
Þn nuÐBe´s s×owing uP on you´ V±M
çve×icÙe test Ðete´) w×en the engÞneÚs
´unning, o´ t×e nuÐBe´s èuÐP a´oundé
´ePÙace t×e cabÙe.
FEB 86
²³
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