2.
Conduct a hydrometer test of the battery electrolyte.
A. Check the voltage across the battery terminals
prior to testing the battery. If the voltage is less than
IMPORTANT: Make sure the area around the cells is
clean before opening the battery caps.
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.
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.
C. Make sure the battery terminals are free of corro-
sion.
B. Temperature correct each cell reading. For each
10
o F (5.5o C) above 80 F (26.7o C) add 0.004 to the
D. Measure the temperature of the center cell.
specific gravity reading. For each 10o F (5.5o C) be-
low 80o F (26.7o C) subtract 0.004 from the specific
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.
gravity reading.
Example:
Cell Temperature 100o F
Cell Gravity
1.245
0.008
1.253
ADD (20o above 80o F)
F. Apply a test load of one half the Cranking Perfor-
mance rating of the battery for 15 seconds.
Correction to 80o F
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 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.
G. Take a voltage reading at 15 seconds, then re-
move the load.
H. Using the table below, determine the minimum
voltage for the cell temperature reading.
Minimum
Voltage
Battery Electrolyte
Temperature
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
70o F (and up)
21.1o C (and up)
15.6o C
3.
Perform a high–discharge test with an adjustable
load tester.
60o F
50o F
40o F
30o F
20o F
10o F
0o F
10.0o C
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.
4.4o C
–1.1o C
–6.7o C
–12.2o C
–17.8o C
CAUTION
Follow the manufacturer’s instructions when
using a battery 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.
Groundsmaster 300 Series
Page 6A – 13
Electrical System (Rev. G)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 300, Toro Groundsmaster 328 D, Toro Groundsmaster 92801SL |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
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| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(2 votes, average: 5 out of 5)
Lawn and Garden readers have rated Toro 92801SL Rev I Groundsmaster 300 Series Groundsmaster 328 D Service Manual 5.0 out of 5.0 based on 2 product reviews. Need 328D. Manual pdf. Will rate after finding manual
t has been a very reliable machine but getting parts is hard and not cheap to buy , generic parts has been cost effective and reliable , i am unable to get a wiring circut diagram for this unit as most problems are electrical problems