Battery Service
The battery is the heart of the electrical system. With
regular and proper service, battery life can be extended.
Additionally, battery and electrical component failure
can be prevented.
8
7
+
6
−
CAUTION
1
5
4
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.
3
2
Electrolyte Specific Gravity
Fully charged: 1.265 corrected to 80oF (26.7oC)
Discharged: less than 1.240
Figure 38
1.
2.
3.
4.
Battery
Battery base
Retainer
5.
6.
7.
8.
Lock washer
Cap screw
Positive battery cable
Negative battery cable
Battery Specifications
BCI Group Size 26
525
CCA at 0o F (−18o C)
Flat washer
Reserve Capacity of 80 minutes at 80oF (27oC)
Dimensions (including terminal posts)
IMPORTANT: Before cleaning the battery, tape or
block vent holes to the filler caps and make sure the
caps are on tightly.
Length
Width
8.2 inches (20.8 cm)
6.8 inches (17.3 cm)
8.0 inches (20.3 cm)
Height
Removal and Installation (Fig. 38)
C. 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 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.
Loosen and remove negative cable from battery. Af-
ter negative cable is removed, loosen and remove posi-
tive cable.
2.
3.
4.
Loosen cap screw that secures battery retainer.
Carefully remove battery from machine.
D. Check that the cover seal is not broken away. Re-
place the battery if the seal is broken or leaking.
Install battery in reverse order making sure to con-
E. Check the electrolyte level in each cell. If the level
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.
nect and tighten positive cable to battery before con-
necting negative cable.
NOTE: Before connecting the negative (ground) cable
to the battery, connect a digital multimeter (set to DC
Amps) between the negative battery post and the nega-
tive (ground) cable connector. The reading should be
less than 0.1 amp. If the reading is 0.1 amp or more, the
machine’s electrical system should be tested and re-
paired.
2.
Conduct a hydrometer test of the battery electrolyte.
IMPORTANT: Make sure the area around the cells is
clean before opening the battery caps.
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
1.
Perform the following inspections and maintenance:
A. Check for cracks. Replace battery if cracked or
leaking.
B. Check battery terminal posts for corrosion. Use
wire brush to clean corrosion from posts.
Groundsmaster 3280−D/3320
Page 6 − 29
Electrical System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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