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6Y-2 ENGINE ELECTRICAL
BATTERY CHARGE
OK, FLUID LEVEL OK :
BATTERY TOP
Darkened Indicator
WITH GREEN DOT
CAN BE JUMP STARTED,
TESTED OR CHARGED
BATTERY CHARGE
LOW, FLUID LEVEL OK :
Darkened Indicator
NO GREEN DOT
'CHARGE MAY STILL BE SUFFICIENT TO START VEHICLE
BATTERY CHARGE UNKNOWN,
FLUID LEVEL LOW :
BATTERY TOP
LIGHT OR BRIGHT
INDICATOR, NO GREEN DOT
DO NOT JUMP START,
TEST OR CHARGE
A-3644
Figure
GREEN . At this 1 .225 specific gravity, the
battery
is
approximately 3/4
full
charge .
When the battery is less than about 3/4 fully
charged, the green ball sinks and the indicator
appears DARK . When the electrolyte level
drops below a minimum level, i .e ., below the
pointed tip of the rod, the indicator window
changes to YELLOW or CLEAR . In this case
the
charging
system
should
be
checked .
Although the battery is capable of further
service, if a cranking complaint has been
reported,
replace
the
battery .
DO
NOT
CHARGE, TEST OR JUMP START .
It is important when observing the test
indictor that the battery be relatively level
and have a clean top so that the correct
indication may be seen . A light may be re-
quired in some poorly lit areas. Following are
the possible test indicator readings :
A . GREEN DOT VISIBLE .
Any green appearance is interpreted
as a "green dot" and the battery is ready
for testing . Proceed to step 3 .
B . DARK--GREEN DOT NOT VISIBLE .
Battery
must
be
charged
before
testing . Refer to "Charging Guide" in
Maintenance Manual X-7525, Sec . 6Y.
NOTE:
Battery should be charged until
green dot appears, but not more than 60
ampere hours (for example - 15 amperes for
1-Charge or Test Indicator Conditions (Maintenance-Free Batteries)
four hours). Do not charge a battery if the
green dot is visible.
(On rare occasions
immediately following periods of prolonged
cranking, the green dot may still remain
visible. If left alone, the dot will disappear
in a short time. Should this occur, a boost-
charge of 20 ampere-hours is recommended.)
C . LIGHT .
DO NOT attempt charging or testing
when charge indicator is light . Check
charging system.
CAUTION: To avoid explosion hazard,
never attempt to charge or jump start a
maintenance-free
battery
which
exhibits a light indicator condition. De-
partures from
this procedure could
result in serious personal injury or
property damage .
STEP 3 - REMOVE SURFACE CHARGE
Connect 300-ampere load across terminals
for 15 seconds to remove surface charge from
the battery . If maintenance-free battery is in
vehicle, connection may be made to existing
terminals . If battery is out of vehicle, adapters
for the side terminals are required .
STEP 4 - LOAD TEST
A . For battery model 89-5, connect volt-
meter and 230-ampere load across term-
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