Toro Groundsmaster 4500-D Series Service Manual page 354

Battery Removal and Installation
Battery Inspection and Maintenance
Battery Testing
Electrical System: Service and Repairs
(Figure
6. Make sure that rubber boot is properly placed over positive cable end and
positive battery post.
7. Lower and secure operator's console panel.
1. Replace battery if case is cracked or leaking.
2. Check battery terminal posts for corrosion. Use wire brush to clean corrosion
from posts.
Before cleaning the battery, tape or block vent holes to the filler caps
and make sure the caps are on tightly.
3. Check for signs of wetness or leakage on the top of the battery which might
indicate a loose or missing filler cap, overcharging, loose terminal post or
overfilling. 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.
4. Check that the cover seal is not broken away. Replace the battery if the seal
is broken or leaking.
5. Check the electrolyte level in each cell, if possible. If the level is below the
tops of the plates in any cell, fill all cells with distilled water between the
minimum and maximum fill lines. Charge at 15 to 25 amps for fifteen (15)
minutes to allow sufficient mixing of the electrolyte.
1. Perform a high−discharge test with an adjustable load tester. This is one of
the most reliable means of testing a battery as it simulates the cold−cranking
test. A commercial battery load tester is required to perform this test.
Follow the manufacturer's instructions when using a battery load
tester.
A. Check the voltage across the battery terminals prior to testing the battery.
If the voltage is less than 12.4 VDC, charge the battery before performing
a load test.
B. If the battery has recently been charged, use a battery load tester
following the manufacturer's instructions to apply a 150 Amp load for
fifteen (15) seconds. This step will remove the surface charge.
C. Make sure battery terminals are free of corrosion.
D. Estimate the internal temperature of the battery to the nearest 10 ºF.
E. Connect a battery load tester to the battery terminals following the
manufacturer's instructions. Connect a digital multimeter to the battery
terminals.
F. Apply a test load of 345 Amps (one half the cranking performance rating
of the battery) to the battery for fifteen (15) seconds.
G. Take a battery voltage reading at fifteen (15) seconds, then remove the
load.
229) (continued)
IMPORTANT
CAUTION
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19245SL Rev A