Club Car Precedent 2014, Руководство по техническому обслуживанию и ремонту

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15
Battery Testing – 8 Volt
BATTERIES: ELECTRIC VEHICLE WITH
POWERDRIVE CHARGER
Performing the Hydrometer Test
4 0
2 0
6 0
8 0
13 00
1.250
1.280
View at eye level.
717
Figure 15-2 Hydrometer Test
1. Remove the vent cap.
2. If using the digital refractometer (CC P/N AM1285701), follow manufacturer’s directions. If using the hydrometer
(CC P/N 1011478), proceed with the following steps.
3. Using a battery thermometer (CC P/N 1011767), record electrolyte temperature of each cell.
4. Squeeze the rubber bulb of the hydrometer and insert into the cell. Slowly release the bulb, drawing electrolyte
up into the glass tube of the hydrometer.
5. When the float rises off the bottom, adjust the electrolyte level so that the float rides free of the bottom but does
not strike the top of the glass tube. Remove the hydrometer from the cell and release the pressure from the bulb.
6. Hold the hydrometer vertically, ensuring that the float is not touching the sides of the barrel. Hold the hydrometer
at eye level and read the scale at the level of electrolyte
(Figure 15-2, Page 15-4) .
7. Record the specific gravity reading and return the electrolyte to the cell from which it was taken.
8. Repeat steps 3 through 7 on all remaining cells.
9. Replace vent caps.
10. Using the electrolyte temperature readings from step 3, correct the specific gravity readings for temperature. See
Hydrometer Calibration on page 15-4.
Hydrometer Calibration
Most hydrometers are calibrated to read correctly at 80 °F (26.7 °C). The readings obtained as described above must
be corrected for temperature. For each 10 °F (5.6 °C) above 80 °F (26.7 °C), add 0.004 to the reading. For each 10 °F
(5.6 °C) below 80 °F (26.7 °C), subtract 0.004 from the reading.
Interpreting the Results of the Hydrometer Test
If an entire battery set has specific gravity readings below 1.250, the batteries are undercharged. Recharge batteries
and repeat Hydrometer Test. If all specific gravity readings are still below 1.250 after recharge, the batteries are
damaged.
If any single battery cell has specific gravity of 1.140 or less, replace that battery.
If any single battery has specific gravity variation of MORE THAN 0.050 points between cells, replace that battery.
For all other specific gravity readings, proceed to the Discharge Test.
TABLE CONTINUED ON NEXT PAGE
Page 15-4 2014 Precedent ® Golf Car Maintenance and Service Manual