Toro Groundmaster 31900, Service Manual, Page: 257 / 355

Removing and Installing the Battery (continued)
7. Clean the battery tray. Neutralize and refinish any damaged areas of the
battery tray.
8. Inspect the battery cables and connectors for damage and corrosion. Clean,
repair, or replace the battery cables and connectors if necessary.
9. Install the battery in the reverse order:
IMPORTANT
To prevent possible electrical problems, install only a fully
charged battery.
A. Connect the positive (+) cable connector onto the positive (+) battery
terminal.
B. Connect a digital multimeter (set to A) between the negative (-) battery
post and the negative (-) cable connector. Ensure that the reading is less
than 0.1 A. A reading of more than 0.1 A usually indicates a damaged
switch, a shorted circuit, or grounded wire. Identify and repair the
electrical faults before returning the machine to service.
C. Connect the negative (-) cable connector to the negative (-) battery
terminal. The cable clamp must be parallel to the edge of the battery
before securing the clamp.
10. After you make the connections, apply battery terminal protector Toro Part
No. 107-0392 or a light layer of petroleum jelly to the battery terminals and
cable connectors.
11. Make sure that the rubber boots are in place over the positive cable end at
the battery post and at the starter.
Inspecting, Maintaining, and Testing the Battery
Temperature Correcting Specific Gravity
Cell Temperature 100°F
Cell Specific Gravity 1.245
38°C minus 27°C equals 11.0°C
(100°F minus 80°F equals 20°F)
11°C multiply by 0.004/5.5°C equals 0.008
(20°F multiply by 0.004/10°F equals 0.008)
ADD (conversion above) 0.008
Correction to 27°C (80°F)
1.253
Minimum Voltage
Minimum Voltage Battery-Electrolyte Temperature
9.6 70°F (and up) 21°C (and up)
9.5 60°F 15°C
9.4 50°F 10°C
9.3 40°F 4°C
9.1
30°F -1°C
Groundsmaster ® 3200, 3300 and 3310 Page 6–65 Electrical System: Service and Repairs
19240SL Rev A