11
Test Procedures
TROUBLESHOOTING AND ELECTRICAL SYSTEM
4 0
2 0
6 0
8 0
13 00
1.250
1.280
View at eye level.
1
3
2
1. Level Indicator
2. Cap
3. Plates
Electrolyte level at least 1/2 inch (13 MM) above plates or to level
indicator.
717
Figure 11-7
Hydrometer Test
22
Figure 11-8
Battery Electrolyte Level
Hydrometer Calibration
Most hydrometers are calibrated to read correctly at 80 °F (27 °C). The readings obtained as described above must be
corrected for temperature. For each 10 °F (5.6 °C) above 80 °F (27 °C), add 0.004 to the reading. For each 10 °F (5.6
°C) below 80 °F (27 °C), subtract 0.004 from the reading.
Interpreting the Results of the Hydrometer Test
The approximate state of charge can be determined by referring to the following table:
SPECIFIC GRAVITY (TEMPERATURE
CORRECTED)
APPROXIMATE STATE OF
CHARGE
1.250-1.280
100%
1.220-1.240
75%
1.190-1.210
50%
1.160-1.180
25%
If the difference between the cells is 0.020 or more, the low cell should be suspected. It may require a catch-up charge
or it may be a weak cell. When the variations between cells reach 0.050 or more, the battery should be replaced.
Voltage Test
1.
Disable the vehicle.
See Disabling the Vehicle on page 1-3.
2.
Check for loose or corroded battery terminal connections. Clean, tighten and replace connections as necessary.
3.
Set the multimeter to the 20 VDC setting.
4.
Measure the voltage across the battery terminals. If the reading is less than 12.4 volts, or if the lowest specific
gravity reading from the hydrometer test is less than 1.225, recharge the battery. If battery voltage is greater
than 12.4 volts and specific gravity is greater than 1.225, the problem is not with the battery. If the battery does
not reach 12.4 volts, or if the specific gravity of a cell is still less than 1.225 after charging, replace the battery.
See following NOTE.
Page 11-14
2009-2012 XRT 950 Maintenance and Service Manual
