B. Temperature correct each cell reading. For each
F. Apply a test load of one half the Cranking Perfor-
mance (see Battery Specifications) rating of the bat-
tery for 15 seconds.
10
oF (5.5oC) above 80oF (26.7oC) add 0.004 to the
specific gravity reading. For each 10oF (5.5oC) be-
low 80oF (26.7oC) subtract 0.004 from the specific
G. Take the test voltage reading at 15 seconds, then
remove the load.
gravity reading.
Example: Cell Temperature
Cell Gravity
100
(37.7
20
(11
ADD (conversion above)
Correction to 80oF (26.7oC)
100oF
1.245
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)
H. Using the table below, determine the minimum
voltage for the center cell electrolyte temperature
reading.
Minimum
Voltage
Battery Electrolyte
Temperature
0.008
1.253
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
70oF (and up)
21.1oC (and up)
15.6oC
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 giv-
en in Charging or until all cells specific gravity is
60oF
50oF
10.0oC
40oF
30oF
4.4oC
–1.1oC
1.225
or greater with the difference in specific gravity
20oF
10oF
–6.7oC
–12.2oC
–17.8oC
between the highest and lowest cell less than 0.050.
If these charging conditions can not be met, replace
the battery.
0oF
3.
Perform a high–discharge test with an adjustable
load tester.
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.
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.
Installation (Fig. 41)
IMPORTANT: To prevent possible electrical prob-
lems, install only a fully charged battery.
CAUTION
1.
Make sure ignition and all accessories are OFF.
Follow the manufacturer’s instructions when us-
ing a battery tester.
2. Make sure battery compartment is clean and re-
painted if necessary. Place battery tray in position.
A. Check the voltage across the battery terminals
prior to testing the battery. If the voltage is less than
3.
electrical connections are in good condition.
Make sure all battery cables, battery retainer and
12.4
test.
VDC, charge the battery before proceeding with
4.
Place battery in its compartment. Make sure battery
is level and flat. Connect positive (+) cable connector
onto positive (+) battery post. Secure cable cap screw
and lock nut using two wrenches.
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 with flat washer and flange
nut. Do not overtighten to prevent cracking or distorting
the battery case.
C. Make sure battery terminals are free of corrosion.
D. Measure the electrolyte temperature of the cen-
ter cell.
6.
Connect a digital multimeter (set to amps) between
the negative (–) battery post and the negative (–) cable
connector. The reading should be less than 0.1 amp. A
reading of more than 0.1 amp usually indicates a faulty
switch, a shorted circuit or grounded wire. Identify and
repair electrical faults before returning machine to ser-
vice.
E. Connect a battery load tester to the battery termi-
nals following the manufacturer’s instructions.
Connect a digital multimeter to the battery terminals.
Groundsmaster 7200/7210
Page 5 – 31
Electrical System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 7200, Toro Groundsmaster 7210 |
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|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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My mower is a TORO 7210.
Start fuse defection. Why ?