Toro 04384 Service Manual page 175

B. Temperature correct each cell reading. For each
o o o
10 F (5.5 C) above 80
specific gravity reading. For each 10
o o
low 80 F (26.7 C) subtract 0.004 from the specific
gravity reading.
Example: Cell Temperature 100
Cell Gravity
o
ADD (20
Correction to 80
C. If the difference between the highest and lowest
cell specific gravity is 0.050 or greater or the lowest
cell specific gravity is less than 1.225, charge the bat-
tery. Charge at the recommended rate and time (see
Battery Charging below) or until the specific gravity
of all cells is 1.225 or greater with the difference in
specific gravity between the highest and lowest cell
less than 0.050. If these charging conditions can not
be met, replace the battery.
2. 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 bat-
tery load tester is required to perform this test.
CAUTION
Follow the manufacturer's instructions when us-
ing a battery tester.
A. Check the voltage across the battery terminals
prior to testing the battery. If the voltage is less than
12.0 VDC, recharge the battery.
B. If the battery has been charged, apply a 150 amp
load for fifteen (15) seconds to remove the surface
charge. Use a battery load tester following the
manufacturer's instructions.
C. Make sure the battery terminals are free of corro-
sion.
D. Measure the temperature of the center cell.
E. Connect a battery load tester to the battery termi-
nals following the manufacturer's instructions. Con-
nect a digital multimeter to the battery terminals.
F. Apply a test load of 270 amps (one half the battery
Cranking Performance Specification) to the battery
for fifteen (15) seconds.
G. Take a battery voltage reading at fifteen (15) se-
conds, then remove the load.
Greensmaster 3250--D
o
F (26.7 C) add 0.004 to the
o o
F (5.5 C) be-
o
F
1.245
o
above 80 F) 0.008
o
F 1.253
Page 5 - - 37
H. Using the table below, determine the minimum
voltage for the cell temperature reading.
Minimum Battery Electrolyte
Voltage
o
9.6 70 F (and up)
o
9.5 60 F
o
9.4 50 F
o
9.3 40 F
o
9.1 30 F
o
8.9 20 F
o
8.7 10 F
o
8.5 0 F
I. If the test voltage is below the minimum, replace
the battery. If the test voltage is at or above the mini-
mum, return the battery to service.
Battery Installation (Fig. 43)
IMPORTANT: To prevent possible electrical prob-
lems, install only a fully charged battery.
1. Make sure the ignition switch and all accessories are
off.
2. Make sure the battery compartment is clean and re-
painted if necessary.
3. Make sure battery cables battery retainer are in good
condition.
4. Place the battery in its compartment. Make sure bat-
tery is level and flat. Push the positive (+) cable connec-
tor onto positive battery post. Do not hammer as this will
damage the battery. Tighten cable clamp fasteners with
two (2) wrenches.
5. Install and secure battery retainer with flange head
screw and flange nut. Do not overtighten to prevent
cracking or distorting the battery case.
6. Connect a digital multimeter (set to amps) between
the negative battery post and the negative (--) cable con-
nector. The reading should be less than 0.1 amp. If the
reading is 0.1 amp or more, the unit's electrical system
should be tested and repaired.
7. Connect the negative (ground) cable connector to
the negative battery post. Tighten cable clamp fasteners
with two (2) wrenches.
8. Coat battery posts and cable connectors with battery
terminal protector (see Special Tools in this chapter) or
petroleum jelly to prevent corrosion.
Temperature
o
21.1 C (and up)
o
15.6 C
o
10.0 C
o
4.4 C
o
--1.1 C
o
--6.7 C
o
--12.2 C
o
--17.8 C
Electrical System