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TM 9-2320-360-20-1
(1) WARNING
Jewelry can catch on equipment
and cause injury or short across
electrical circuit and cause severe
burns or electrical shock. Remove
rings, bracelets, watches,
necklaces, and any other jewelry
before working around HET
Tractor.
Refer to para 7-6 or 7-7 to adjust alternator belt
(2) WARNING
Batteries can
explode from a
spark. Battery acid
Is harmful to skin
and eyes. If skin Is
exposed to battery
electrolyte, flush
with cold water, and
seek Immediate
medical attention.
Check battery terminals for damaged, loose,
corroded, or dirty connections
VOLTAGE DROP TEST
(1)
Start and operate engine at idle with aid of assistant
(TM 9-2320-360-10).
(2)
Connect multimeter leads to positive (+) terminal and
negative (-) terminals of 12 volt batteries. Record
voltage displayed on multimeter.
(3)
Connect multimeter leads to positive (+) terminal and
negative (-) terminals of 24 volt batteries Record
voltage displayed on multimeter.
(4)
Shut off engine (TM 9-2320-360-10).
(5)
Subtract voltage measured at alternators (step 1) from
voltage measured at batteries The difference is the
voltage drop.
(6)
If the voltage drop is greater than 0.10 volt, check the
following cables for loose or corroded connections:
Cable no 1831 from positive (+) terminal on 24
volt alternator to 24 volt alternator circuit
breaker.
Cable no. 1274 from 24 volt alternator circuit
breaker to positive (+) terminal on starter.
Cable no 1139 from positive (+) terminal on
starter to batteries
Cable no. 1831A form positive (+) terminal on
12 volt alternator to 12 volt alternator circuit
breaker.
Cable no. 1622 from 12 volt alternator circuit
breaker to batteries.
Change 2 2-463
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