2.
Conduct a hydrometer test of the battery electrolyte.
D. 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 tem-
perature 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
oF (5.5oC) above 80oF (26.7oC) add 0.004 to the
specific gravity reading. For each 10oF (5.5oC) be-
H. Using the table below, determine the minimum
voltage for the cell temperature reading.
low 80oF (26.7oC) subtract 0.004 from the specific
gravity reading.
Minimum
Voltage
Battery Electrolyte
Temperature
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)
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
70oF (and up)
21.1oC (and up)
60oF
50oF
15.6oC
10.0oC
0.008
1.253
40oF
30oF
4.4oC
--1.1oC
C. If the difference between the highest and lowest
cell specific gravity is 0.050 or greater or the lowest
cellspecificgravityislessthan1.225,chargethebat-
tery. Charge at the recommended rate and time giv-
en in Charging or until all cells specific gravity is
20oF
10oF
--6.7oC
--12.2oC
0oF
--17.8oC
1.225
orgreater withthedifferenceinspecificgravity
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.
between the highest and lowest cell less than 0.050.
If these charging conditions can not be met, replace
the battery.
Installation
3.
Perform a high--discharge test with an adjustable
load tester.
IMPORTANT: To prevent possible electrical prob-
lems, install only a fully charged battery.
Thisisoneofthemostreliablemeansoftestingabattery
asitsimulatesthecold--crankingtest.Acommercialbat-
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, battery retainer and
electrical connections are in good condition.
Follow the manufacturer’s instructions when us-
ing a battery tester.
4. Place battery in its compartment. Make sure battery
is level and flat. Connect positive cable connector onto
positive battery post. Tighten cap screw and lock nut
with two wrenches.
A. Check the voltage across the battery terminals
prior to testing the battery. If the voltage is less than
12.4
VDC, recharge the battery.
IMPORTANT: The nut and flat washer must be on
top of the battery retainer during installation to pre-
vent the cap screw from hitting hydraulic hard lines
when the sidewinder is shifted.
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 to pre-
vent cracking or distorting the battery case.
C. Make surebattery terminals arefreeofcorrosion.
Electrical System (Rev. D)
Page 5 -- 26
Groundsmaster 3500--D
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