E: Battery Fluid Level And Battery Installation - Subaru SVX 1992 Manual

PRE-DELIVERY INSPECTION [01E0] 1-4
E : BATTERY FLUID LEVEL AND BATTERY
INSTALLATION
CHECK POINTS
1 . External parts
2. Electrolyte level
3. Specific gravity
1 . Check for the existence of dirt or cracks on the
battery case, top cover, vent plugs, and terminal posts.
If necessary, clean with water and wipe with a dry cloth .
Apply a thin coat of grease on the terminal posts to
prevent corrosion .
Check the electrolyte level in each cell . If the level is
below MIN LEVEL, bring the level to MAX LEVEL by
pouring distilled water into the battery cell . Do not fill
beyond MAX LEVEL.
Caps
®®
Upper level
Lower level
BI-038
Fig. 2
a. Electrolyte has toxicity ; be careful handling the
fluid.
b. Avoid contact with skin, eyes or clothing. Especially
contact with eyes, flush with water for 15 minutes and
get prompt medical attention.
c. Batteries produce explosive gasses . Keep sparks,
flame, cigarettes away.
d. Ventilate when charging or using in enclosed space.
3. The specific gravity of electrolyte can be measured
with a hydrometer . Holding the glass tube vertically,
slowly draw the liquid into the tube . Take the reading on
the float scale at the highest point of the liquid .
When reading, the eye should be level with the surfaced
of the liquid .
Thermal gauge
_n Hydrometer -
()JI r_ . .-)
~°CA®
'! :
B1-039
Fig . 3
Serviceable specific gravity
1 .220 - 1 .280 at 20°C (68°F)
If the specific gravity reading is below 1 .220 at 20°C
(68°F), the battery must be recharged and, if necessary,
the specific gravity of the electrolyte must be adjusted .
The specific gravity changes according to temperature.
The standard temperature is considered to be 20°C
(68°F) .
When measuring the specific gravity, calculate as fol-
lows :
S = St + 0.0007 (t - 20)
S = Specific gravity corrected for 20°C (68°F)
St = Measured specific gravity at t°C
t = Electrolyte temperature on centigrade scale (°C)
0.0007 = Temperature coefficient
[EXAMPLE]
A hydrometer reading of 1 .273 at 30°C (86°F) is cor-
rected to 1 .280 at 20°C (68°F), indicating that the battery
is fully charged . On the other hand, a reading of 1 .251 at
- 10°C (14°F) is corrected to 1 .230 at 20°C (68°F), indi-
cating that the battery is partially charged. .
3