Workshop
Manual
Rolls- Ro yce Silver Shadow
8
Bentlev
T
Series
Chapter
M
Battery-To fit
Reverse the procedure given for removal, noting the
following points.
1.
Ensure that the correct battery lead is
fitted to the correct terminal,
i.e. negative to
negative, otherwise damage to electrical com-
ponents will occur.
2.
Verify that the battery terminals are
secure and positioned correctly.
3.
Smear the terminals with petroleum jelly.
(Do not use grease).
Corrosion
To remove corrosion from the battery leads and
terminal posts, disconnect the leads and wash with
hot water or a dilute solution of ammonium carbonate
The ammonium carbonate solution must be
removed with clean water; thoroughly dry the leads
and terminal posts with
a
cloth.
Connect the battery leads to the terminal posts
on the battery and smear with petroleum jelly.
Specific gravity-To check
1.
Remove the battery as described in Battery
-
To remove.
2.
Using a hydrometer, obtain the specific gravity
and compare the reading against the figures given
in Table
1.
Batt ery-To top-up
1.
Reniove the battery from the car.
2.
Remove the cover from the filling trough.
3.
Fill the trough with distilled water.
4.
Clean and refit the trough cover.
The cover will press down on each valve and
allow an equal amount of distilled water to enter
each cell.
5. With a damp cloth, clean the top of the battery;
do not use petroleum or paraffin etc.
6.
Refit the battery and ensure that the battery
terminals are secure and positioned correctly.
Note
On late European cars, the battery has
individual screw vent caps.
Initial charge-For new batteries
1.
The acid specific gravity figures given in
Table 1 are corrected to
15.6'~ (60'~). To the
specific
qavity obtained add 0.004 for every
5.6'~ (10
F)
above this temperature. e.g.
Measured specific gravity at 32.3'~ (90'~) is
1.265,corrected specific gravity 1.277.
2.
Fill the battery with (ool accumulator acid
preferably between
1'~
(40°1;) and
27'~
(80'~) of
the correct specific gravity given in Table 1.
3.
The electrolyte level will fall soon after
filling and must be restored by the addition of more
electrolyte, after which the battery must be allowed
to stand for
3
hours. At the end of this period,
topping up will again be necessary to obtain the
correct level.
4.
The recommended charge rate is
7
amp. for
12 hours. The charge may be interrupted provided
that the charging periods are of at least 8 hours
and the rest periods not exceeding 16 hours.
5.
The charge will not be complete until the total
specified charging time has expired, the voltage and
specific gravity of each cell has remained constant
throughout
5
successive hourly readings and gas is
freely emitted from each cell.
Table
1
Dageni te Demon battery
Air Temperature below
32"~. (~o'F.)
Specific Gravity Condition of Battery
Fully charged
Half discharged
Fully discharged
Air Temperature above 32"~. (90°F.)
Specific Gravity Condition of Battery
Fully charged
Half discharged
Fully discharged
Lucas Pacemaker battery
Air Temperature below
27'~. (80"~.)
Specific Gravity Condition of Battery
Fully charged
Half discharged
Fully discharged
Air Temperature above
27'~.
(8[r°F.)
Specific Gravity Condition of Battery
Fully charged
Half discharged
Fully discharged
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