MG MGA Twin Cam Workshop Manual page 174

THE ELECTRICAL EQUIPMENT
N
Section N .27
BEADLAMP BEAM SETI'DIG
Refer to Section N.l7 for details of the bcadlamp
adjustment
screws.
In the absence of specialized proprietary equipment
the setting of the lamps can be carried out by placing
the loaded vehicle in front of a blank wall at a distance
of 25
ft.
(7·6 m.) or more, taking care that the surface on
which
the
car is standing is level and not sloping in
relation to the
wall.
It will be found an advantage to
cover one lamp while setting the other.
OISTAHCI IETWE£N
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H~adlarrtp-<JiignmLnt
Section N.28
CONC£NTJU.Tm
AAfA O F L IGHT
HOGHT Of
C(NTil£
Of LAMPS
"'011
GAOUNO
DRY-CHARGED BATTERIES
'Dry-charged' batteries are supplied without electro-
lyte but with the plates in a
charged
condition. This
ensures tbat there is no deterioration of the battery
if
it is
stored for a period before use. These batteries have the
type suffix letter ' Z' (e.g. STGZ, etc.).
Filling the cells with electrolyte of the correct specific
gravity (see 'Illltial
ftlllnc
and
cbflinl'
of Section N.l),
Ill oee open&., renden the battery capable of giving a
starting discharge
oooe
lloar .tter
lilliDc·
The temperature
of the filling-in solution, battery, and filling room should
be maintained between
60"
F. (16" C.) and
too•
F. (38• C.)
If the battery ha.s been stored in a cool place it should be
allowed to warm up to room temperature before filling.
When
time
permits, a freshening charge at the normal
recharge
rate of the battery will ensure that the battery
is fully charged. During the charge keep the electrolyte
level with the top
of the separaton by the addition of
distilled water. Check the electrolyte specific gravity at
the cod of the charge :
if
1· 270 acid was used to fill the
N OA
(Twin Cam).
laue 3. m65
battery, the specific gravity should now be betw<:<:n 1·210
and 1·290: if 1·210 acid was used, the specific gravity
should be between I ·210 and 1·230.
Section N.29
MODIFIED EUROPEAN LIGHT UNIT
Cars exported to Europe are now filled with the new
European-type headlamps. These lamp units are fitted
with special bulbs and front lenses giving an asymmetrical
beam to the right-band or left-band side according to
the regulations prevailing in the country concerned. This
modification
wa.s
introduced on the following cars:
From Car No. 824 (Europe except France).
From Car No. 1618 (France).
From Car No. 2418 (Sweden).
Access to the bulb
is
gained in the same way
a.s
described in Section
~-
16. The bulb, however. is released
from the refiector by withdrawing the three-pin socket
and pinching the two en<h of the wire retaining clip to
clear the bulb Oange (see Fig. N. J7).
When replacing the bulb care must be taken to see
that the rectangular pip on the bulb fiange engages the
slot in the refiector seating for the bulb.
Replace the spring clip with
its
coils resting in the base
of the bulb llange and engaging in the two retaining lugs
on the reflector seating.
The appropriate replacement bulbs a. r e listed in
Section N.24. They are not interchangeable with those
used in conjunction with the Continental-type bead-
lamps previously fitted.
Fi&. N.l1
77re head/amp light unit, with tM EurOJNan-type
lamp bulb arrangement
ins~t
N.l 9