PS Magazine - MAY 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 246
MAY 1973
1±
I
I
'.
4. Now you can mAke AlL the DC voLtagE TEstS oU±-
²inEd an³ sHown In YoUr tActicA² or combA´ VEµ
hiclE
¶
20 ·M's
¸
Just kEEp
in
min³ thA´ thE b
l
Ack
¹Est leA³ is nEgAtivE(º) and goES to tHE
g
roUn³
»
¼hE r½d onE Is positIvE (+)an³ GoEs ´o thE poin¹
WhErE you mEAsuRE thE vo
²
tAgE»
54
5
¾
MAkE YoUr rEAdings on ´hE DC scA
²
E Using ´hE
figUrEs in ´hE middLE rOw¿thE onE ´hA´ Ends
With A 5À Now rEAd ´his rOw of figUrEs As 10
,
20Á
30
Â
40 And 50
Ã
6
±
Äf the mEtEr PointEr moVES
m
´He oppositE ³
i
rEc
Å
¹ion, REvErsE YoUr ´Es´ lEads At thE point of con
Æ
tact to corrEc´ thE polArityÇ Èr you cAn turn ´hE
FÉNC·
Ä
ÊN switch to 20000/ËDC r
E
v
»
7
²
Ìll con´Act points
Í
eSpEciAlLY thE ground (vEÅ
hiclE chAsSis) must bE bArE mEtAl An³ clEan
Î
Bad connections, poor wiring and dirty switch contact points will cause errors in
yoUr voltage readings. To get accurate readings± measure at the exact circuit points
given in the TM's electrical circuit troubleshooting diagrams² In shOrt± avoid read-
ing across connections and switches² (³nless you´re testing for a high resistance
Point± or testing a complete circuit²)
55
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