205
M4.6-1055-003
ELECTRICAL
Battery
Battery Cleaning
Always keep vent plugs tightly in place when cleaning
battery. When properly watered and charged, the bat-
tery will remain clean and dry. All that is necessary is to
brush or blow off any dust or dirt that may accumulate
on them. However, if electrolyte is spilled or overflows
from a cell, it should be neutralized with a solution of
baking soda and water (one pound to one gallon of wa-
ter). To do this, remove battery from truck and clean
with the solution of baking soda and water, brushing
the soda solution beneath the connectors and remov-
ing grime from the covers. Then rinse the battery with
cool water from a low pressure supply to remove the
soda and loosen dirt. If batteries stay wet consistently,
they may be either overcharged or over filled. This con-
dition should be investigated and corrected.
Troubleshooting
Records of battery specific gravity readings, charger
used, truck used, etc. can be a most effective trouble-
shooting aid. Contact your dealer for charts specifically
for this purpose.
Voltage readings of each cell taken at the normal
charger finish rate also indicate battery condition. New
batteries will have cell voltages from 2.55 volts to 2.65
volts. Older batteries may however range from 2.45
volts to 2.55 volts. These readings still indicate a bat-
tery in good condition.
A variation of .20 volts may be normal if certain cells
are exposed to higher temperatures during discharge.
Voltage differences that cannot be attributed to battery
age or operating conditions indicate a weak cell(s) and
maintenance is required.
Only qualified and experienced personnel should per-
form maintenance and repair on batteries.
Battery Removal
Don't allow any metallic objects to come in contact with
the top of the battery cells. This may cause a short cir-
cuit when removing, installing or transporting the bat-
tery. Use an insulator (such as plywood) to cover the
top of the battery before and during removal and instal-
lation.
1. Turn key switch off.
2. Disconnect battery.
3. Remove battery retainer (one side only).
Figure 16003
Figure 16004
Crown 2007 PF15687-3
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