Testing (Maintenance Free) - Taylor-Dunn BG-015-00 Operation, T Roubleshooting And Replacement Parts Manual

Maintenance, Service, and Repair
Specific Gravity Test
NOTE: The battery must be fully charged before performing this test.
The specific gravity of a cell is an indication of the actual state of charge of
the cell. A fully charged cell should have a reading of 1275 to 1300 (see the
illustration to the right). A discharged battery will read 1100. Ideally, all cells in
a battery pack will have the same reading. Any cells in a battery pack that vary
by more than 30-points may be an indication of a bad cell.
Clean the battery. Refer to
battery.
Using part number 77-200-00 hydrometer, check and record the specific gravity
of each cell in the battery.
If, after charging, none of the cells exceed a hydrometer reading of 1250 then
there may be a fault in the charging system. If the charging system checks
OK then the battery is no longer accepting a charge and should be replaced.
NOTE: Refer to the engine manual for information on checking
The highest reading will be the cell that is accepting the most charge. This
reading will be used to gauge all other cells.
Compare the specific gravity readings to the highest reading, if the difference
between any of the cells is more than 30-points, then that battery should be
replaced.
Reconnect the battery, remove the blocks from the wheels and test drive.

TESTING (MAINTENANCE FREE)

Testing maintenance free batteries requires special equipment. If your battery requires testing, remove
the battery and take it to an qualified automotive repair facility for testing.
Cleaning
section for information on cleaning the
the charging system.
Batteries Page 4
Typical Hydrometer Float