ELECTRICAL
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CAL
Checking the specific gravity
Check the condition
of
the
bat
tery by taking hydrometer readings of the
specific gravity
of
the
electrolyte in each of the cells. Readings should
not
be
taken
immediately after topping up the cells.
The
hydrometer
must
be held
vertically
and
the readings
taken
at eye-level. Check that the float is free
and
take
care
not
to
draw
in
too
much electrolyte. The specific gravity readings
and
their indications are as follow s :
Battery
The
battery electrolyte
must
be maintained at the correct level.
Remove
the
manifold weekly
and
examine the level of the electrolyte in each
cell.
If
necessary, add sufficient distilled wate r until
the
perforated separator
guard
in each cell is
just
covered.
Do
not
overfill.
More
frequent topping up
may be necessary in
hot
climates or if long daily runs are made.
Do
not use tap-water
and
do
not
use a naked light when examining the con-
dition of the cells. Wipe away all dirt
and
moisture
from
the
top
of
the battery.
Fuel pump
Fuel
is delivered to the carburetters by an S.U. electric fuel
pump
, Type
AUF
.
The
pump
is situated
beneath
the luggage
compartment
on
the right-hand side.
Coil
The
coil requires no
attention
beyond keeping its exterior
cl~an
,
particularly
between
the
terminals,
and
occasionally checking
that
the termmal connections
are quite tight.
If
the high-tension cable needs renewal it must be
r
e
p
l
a
ce
~
by the correct type.
nare
the
end
of
the
cable
for
lIn.
(6
mm.),
pass
it
tlrr6Ugft
its
ffioulded
tefffiUUl1
and
washer,
and
spread
out
the
strands to ensure
good
contact.
Blown fuses
The
units which are
prote
cted by the fuses
can
readily be
iden~ified
on
the
wiring diagram. A blown fuse is indicated by the failure of
a~l
the units protected
by it,
and
is confirmed by examination of the
.r~lse
when
wIt~drawn.
.
Before renewing a blown fuse inspect the
wir
ing
of
the
units
that
have faded
for evidence
of
a
short
circuit or
other
fault.
Spare fuses are provided
and
it is
important
to use only
th~
~or~ect
replace-
ment
fuse.
The
fusing value is
marked
on a coloured
paper
slip inside the glass
tube
of
the
fuse.
Regulator and fuse block
1. Regulator cover.
2.
AUX
.IGN
. fuse (35-amp.) .
3. Fuse block.
4. AUX. fuse (35-amp.).
5. Spare fuses.
Fuses
The
fuses
are
hou
sed in a
separat
e fuse block on the engine
bulkhea~.
The
fuse
con
necting terminals
'A
I'
and
'1\2' protects the accessories
that
operate irrespective of whether
the
ignition is on or off. .
The
fuse connecting terminals
'A3
'
and
'1\4' protects
t~e
a~s~orI~s
that
operate only when the ignition is switched on (stop lights, direction indicators,
etc.).
Voltage regulator
This is a sealed unit, located on the right-hand side of the engine b
ilkh
ad
under the
bonnet
, controlling the charging rate
o~
the
dynamo. In accorda nce
with the needs of the battery.
The
regulator requires no
atten
tion and shouId
not
be disturbed.
For climates above
26·6° C. (80° F.)
1·210 to 1·230
1·130
to 1·150
1·050
to 1·070
When tak ing hydrometer
readings make certain that
the float is
free,
hold the tube
vertically, and do not draw
in too much electrolyte. The
readings must be taken at
eye-level
For climates below
26·6° C. (80° F.)
1·270 to 1·290
1·190
to 1·210
1·110
to 1·130
Battery fully charged
Battery
about
half-charged
Battery fully discharged . .
These figures are given assuming
that
the temperature of the solution is
about
16° C. (60° F.) .
If
the
temperature
of
the
electrolyte exceeds 16° C. (60° F.)
·002 must be
added
to
the
hydrometer
read
ing for each 3° C. (5° F.) rise to give
the
true specific gravity. Similarly, ·002
must
be subtracted from the hydrometer
reading for every
3° C. (5° F.) below 16° C. (60° F.).
The
readings for all cells
should
be
approx
imately the same.
If
one
cell gives a reading very different from
the rest the battery
should
be examined by an authorized
Distributor
or Dealer.
Never leave the
batter
y in a discharged condition for any length of time.
Have
it
fl1Hy
£h~r~~g;
~ng
~Y~ry
fgrtnight
glve
it a
short
refreshing
charge
to
prevent any tendency for the plates to become permanently sulphated.
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