Individual Battery Cell Check
Place a light load on the battery by crank-
ing engine (do not start engine) for 3 seconds.
Turn on headlights, after one minute proceed
with check. Using a 4 volt voltmeter check
the voltage of each cell, refer to Figure F-4.
If
cell voltage varies more than . 05 vol ts
replace battery.
If
cell voltage is below 1. 95
volts, charge battery and recheck the cell
voltages. If cell voltage is still below 1. 95
volts or varies .05 volts replace battery.
Battery Cranking Voltage Test
To perform the cranking voltage check;
NOTE
On Spark Ignition engines remove
the center coil wire to prevent engine
from starting
1. Connect a volt meter (12 volt) between the
positive and negative terminals of the bat-
tery, Figure F-5.
Crank the engine for 15 seconds and re-
cord voltage.
2. Connect voltmeter (12 volt) between the
starter generator"
A"
terminal and ground
on starter generator frame, Figure F-5.
Crank the engine and record voltage.
If
voltage is not the same or varies more
than .5 volt, check the battery cables,
clean and tighten connections.
Battery Bench Load Test
When battery is removed from the trac-
tor, connect a volt meter (12 volt) between
the negative and positive post, Figure F-6.
A
load equal to
3
times the amp hour rating
of the battery should be connected between
the positive and negative posts and after 15
seconds, check the volt meter reading.
If
it is less than 9.5 volts (12 volt battery)
the battery should be replaced.
F-4
BATTERY
+
VOLTMETER
Figure F-4
SOLENOID
SWITCH
Figure F-5
VOLTMETER
Figure F-6
VOLTMETER
c:::J
CARBON BANK
RESISTOR
BATTERY
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