2.
hydrometer test of the battery electrolyte.
If battery filler caps are removable, conduct a
D. If battery filler caps are removable, measure the
temperature of the center cell.
IMPORTANT: Make sure the area around the cells is
clean before opening the battery caps.
E. Connect a battery load tester to the battery termi-
nals following the manufacturer’s instructions.
Connect a digital multimeter to the battery terminals.
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 temper-
ature of the cell.
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.
B. Temperature correct each cell reading. For each
10
o
F (5.5
specific gravity reading. For each 10
F (26.7 C) subtract 0.004 from the specific gravity
o
C) above 80
o
F (26.7
o
C) add 0.004 to the
H. Using the table below, determine the minimum
voltage for the cell temperature reading.
o
o
F (5.5 C) below
80
o
o
reading.
Minimum
Voltage
Battery Electrolyte
Temperature
Example: Cell Temperature
Cell Gravity
100oF
1.245
100
(37.7
20
(11
oF minus 80oF equals 20oF
oC minus 26.7oC equals 11.0oC)
oF multiply by 0.004/10oF equals 0.008
oC multiply by 0.004/5.5oC equals 0.008)
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
70
o
F (and up)
21.1 C (and up)
o
60
o
50
o
40
o
30
o
20
o
10
o
F
F
F
F
F
F
15.6
o
o
C
C
10.0
ADD (conversion above)
Correction to 80oF (26.7oC)
0.008
1.253
4.4
–1.1
–6.7
o
C
o
C
C
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 given
in Charging or until all cells specific gravity is 1.225
or greater with the difference in specific gravity be-
tween the highest and lowest cell less than 0.050. If
these charging conditions can not be met, replace
the battery.
o
–12.2
o
C
C
0
o
F
–17.8
o
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 (Fig. 24)
3.
Perform a high–discharge test with an adjustable
load tester.
IMPORTANT: To prevent possible electrical prob-
lems, install only a fully charged battery.
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.
1.
Make sure ignition and all accessories are off.
2.
Make sure battery compartment is clean and re-
painted if necessary.
CAUTION
3.
Make sure all battery cables and connections are in
good condition and battery retainer has been repaired or
replaced.
Follow the manufacturer’s instructions when us-
ing a battery tester.
4.
Place battery in its compartment. Make sure battery
A. Check the voltage across the battery terminals
prior to testing the battery. If the voltage is less than
is level and flat. Connect positive cable connector onto
positive battery post. Tighten cap screw and nut with two
wrenches.
12.4
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.
5. Secure battery retainer. Do not overtighten retainer
to prevent cracking or distorting the battery case.
C. Make sure battery terminals are free of corrosion.
Electrical System
Page 8 – 18
Workman 3000/4000 Series
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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|
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| Language | English |
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