Chevrolet 30 Series 1967 Service Manual page 350

ENGINE-ELECTRICAL 6Y-2
ONE PIECE
CELL COVER ELECTROLYTE LEVEL
VENT PLUG
F ig. l b —Battery
thoroughly washed and dried. This type of Battery con­
tains no electrolyte until it is activated for service in
the field and, therefore, leaves the factory in a dry state.
Consequently, it is called a "dry-charge" Battery.
Each vent well in a "dry charge" Battery has an
integral hard rubber seal to prevent the entrance of
air and moisture which would oxidize the negative active
materials and reduce the
(fig. 3b). The integral hard rubber seals and the sealing
compound between the case and one-piece cell cover
make possible a vacuum sealed assembly which can be
stored for very long periods of time without detrimental
effects.
Before activating the "dry charge" Battery, the inte­
gral hard rubber seals may be broken simply by pushing
the Delco Eye down into each vent well. The seals drop
into the cells, and can remain there since they are not
chemically active and will cause ho harm. (The Delco
Eye is a special type of vent plug that is described in
the section entitled "Periodic Servicing,\)
ACTIVATING DRY CHARGED BATTERIES
A "dry charge" Battery is activated by filling each
c ell with electrolyte, which is a dilute solution of sulfuric
acid having a specific gravity of 1.265 at 80°F. The
cells are properly filled when the electrolyte level
reaches the bottom of the "sp lit vent" at the bottom
of the vent well. The split vent is a visual level fill
feature designed into the cell cover of Delco Batteries
(fig. 4b). The electrolyte surface will appear distorted
when it contacts the split vent.
HOLD-DOWN SLOT
freshness of the Battery
Fig . 2b— Internal V ie w of Two C e lls Showing Connector
Through Partition
The electrolyte level of each cell should be checked
after filling the Battery initially. If the level has fallen
VENT WELL
F ig . 3b—Vent W ell Construction Showing Seal
SEAL
SPLIT VENT
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