Battery Service
The battery is the heart of the electrical system. With
regular andproper service, battery lifecan beextended.
Additionally, battery and electrical component failure
can be prevented.
3
CAUTION
When working with batteries, use extreme cau-
tion to avoid splashing or spilling electrolyte.
Electrolyte can destroy clothing and burn skin or
eyes. Always wear safety goggles and a face
shield when working with batteries.
2
1
Electrolyte Specific Gravity
Figure 43
3.
Fully charged: 1.265 corrected to 80oF (26.7oC)
1.
2.
Negative cable
Positive cable
Battery strap
Discharged: less than 1.240
Battery Specifications
BCI Group Size 24
650
Reserve Capacity of 105 minutes at 80oF (26.7oC)
D. Check thatthe cover seal is notbroken away.Re-
place the battery if the seal is broken or leaking.
CCA at 0o F (--17.8o C)
Dimensions (including terminal posts and caps)
E. Check theelectrolyte levelineachcell.Ifthelevel
is below the tops of the plates in any cell, fill all cells
with distilled water between the minimum and max-
imum fill lines. Charge at 15 to 25 amps for 15 min-
utes to allow sufficient mixing of the electrolyte.
Length
Width
Height
11 inches (27.9 cm)
6.76 inches (17.2 cm)
9.2 inches (23.4 cm)
Removal and Installation (Fig. 43)
SeeTractionUnitOperator’s Manualforbatteryremoval
and installation information.
2. Conduct a hydrometer test of the battery electrolyte.
IMPORTANT: Make sure the area around the cells is
clean before opening the battery caps.
NOTE: Before connecting the negative (ground) cable,
connect a digital multimeter (set to amps) between the
negative battery post and the negative (ground) cable
connector. The reading should be 0 amps. If the reading
is 0.1 amp or more, this indicates a parasitic draw and
the unit’s electrical system should be tested and re-
paired.
A. Measure the specific gravity of each cell with a
hydrometer. Draw electrolyte in and out of the
hydrometer barrel prior to taking a reading to warm--
up the hydrometer. At the same time take the tem-
perature of the cell.
Inspection, Maintenance, and Testing
B. Temperature correct each cell reading. For each
10
oF (5.5oC) above 80oF (26.7oC) add 0.004 to the
1.
Perform following inspections and maintenance:
A. Replace battery if case is cracked or leaking.
specific gravity reading. For each 10oF (5.5oC) be-
low 80oF (26.7oC) subtract 0.004 from the specific
gravity reading.
B. Check battery terminal posts for corrosion. Use
wire brush to clean corrosion from posts.
Example: Cell Temperature
Cell Gravity
100
oF minus 80oF equals 20oF
(37.7o
C minus 26.7oC equals 11.0oC)
100oF
1.245
IMPORTANT: Before cleaning the battery, tape or
block vent holes to the filler caps and make sure the
caps are on tightly.
20oF multiply by 0.004/10oF equals 0.008
(11oC multiply by 0.004/5.5oC equals 0.008)
0.008
ADD (conversion above)
Correction to 80oF (26.7oC)
C. Check for signs of wetness or leakage on the top
ofthe battery which mightindicate aloose ormissing
filler cap, overcharging, loose terminal post, or over-
filling. Also, check battery case for dirt and oil. Clean
the battery with a solution of baking soda and water,
then rinse it with clean water.
1.253
Electrical System (Rev. A)
Page 5 -- 28
Groundsmaster 4500--D/4700--D
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