n
SERVICE ADJUSTMENT PROCEDURES
NOTES
NJ
1. After the engine has been started, the ammeterindication
will drop as the battery reaches the fully charged con-.
dition.
Read the indication at its maximum value while in-
creasing the engine revolution.
2. If the battery is in the fully charged condition, current
will not flow, resulting in a no-flow condition of the
nominal output current., In this case, measure l;he output
current after the battery has been discharged by cranking
the engine or increase the electrical load by @ding new
parallel circuits.
REGULATED VOLTAGE TEST
1.
2.
3.
4.
5.
6.
7.
8.
Turn ignition switch OFF.
Disconnect the battery ground cable.
Disconnect the battery positive cable and: connect a
60 A ammeter between the battery positive terminal
and ‘cable.
Connect a voltmeter between terminal “L” of -alternator
and ground.
Set the engine tachometer.
Reconnect the battery ground cable to the battery.
The voltmeter should indicate 0 V; if it is, not, the alter-
nator or wiring is’defective.
Short circuit the ammeter-terminals and start the engine.
NOTE
Make sure that the starter current does not flow through
the ammeter while starting the engine.
Increase the engine speed to 2,000 to 3,090 rpm and
check the ammeter reading. If the reading is .5 A or less,
check the voltmeter reading. This reading is the regulated
voltage. If the ammeter reading is more than. 5 A, either
continue charging until the reading drops below 5 A or
replace the battery with one that is fully charged and
then repeat the test.
Regulated voltage . . . . .
14.4 V f. 0.5 at 20°C (68°F)
HANDLING PRECAUTIONS
1. Make sure that alternator, battery, etc., are connected
properly. If battery polarity is reversed, excessive current
will flow from battery to alternator, and damage to
diodes or wiring harness could result.
2. Do not disconnect battery terminals while engine is
running. Surge voltage will be produced which could
cause deterioration of diodes or transistors.
3. When battery is to be quick-charged, be sure to disconnect
battery terminals first. If terminals are not disconnected,
damage to diodes could result.
4. When a steam cleaner is used, make sure that alternator is
not directly exposed to steam.
Charging
. .
indicator
light
Ignition
Altp,#b 9, ,‘f!-fy To load
LtJ
Voltmeter
Azer
1
8-76