Toro Greensmaster 3150 Service Manual page 132

B. Temperature correct each cell reading. For each
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
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
battery. Charge at the recommended rate and time
given in Charging or until all cells specific gravity is
1.225 or greater with the difference in specific grav-
ity between the highest and lowest cell less than
0.050. If these charging conditions can not be met,
replace the battery.
3. 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.
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 15 seconds to remove the surface charge.
Use a battery load tester following the manufactur-
er'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 ter-
minals following the manufacturer's instruc-
tions. Connect a digital multimeter to the battery
terminals.
F. Apply a test load of one half the Cranking Perfor-
mance (see Battery Specifications) rating of the bat-
tery for 15 seconds.
G. Take a voltage reading at 15 seconds, then re-
move the load.
Electrical System
o o
F (26.7 C) add 0.004 to the
o o
F (5.5 C) be-
o
F
1.245
o o
above 80 F) 0.008
o
F 1.253
CAUTION
H. Using the table below, determine the minimum
voltage for the cell temperature reading.
Minimum
Voltage
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
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.
Installation
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 all battery cables and connection are in
good condition and that the battery hold down clamp has
been repaired or replaced.
4. Lift seat and place the battery in its compartment.
Make sure battery is level and flat. Push the positive
cable connector onto positive battery post. Do not ham-
mer; this will damage the battery. Tighten bolts with two
wrenches.
5. Secure battery retainer to the battery with the two
wing nuts. Do not overtighten to prevent cracking or dis-
torting the battery case (Fig. 25).
6. Apply a light coat of grease on all battery posts and
cable connectors to reduce corrosion after connections
are made.
7. Connect a digital multimeter (set to amps) between
the negative battery post and the negative (ground)
cable connector. The reading should be less than 0.1
amp. If the reading is 0.1 amp or more, the unit's electri-
cal system should be tested and repaired.
8. Connect the negative (ground) cable connector to
the negative battery post.
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Battery Electrolyte
Temperature
o o
70 F (and up) 21.1
o
60 F 15.6
o
50 F 10.0
o
40 F
o
30 F –1.1
o
20 F –6.7
o
10 F –12.2
o
0 F –17.8
Greensmaster 3150
C (and up)
o
C
o
C
o
4.4 C
o
C
o
C
o
C
o
C