MG MGA Twin Cam Workshop Manual page 171

Mga series
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N
THE
ELECTRICAL
EQUIPMENT
Fig.
N.ll
Th~ h~adlamp
srtting
scr~,.·s
J.
Vcrcicd
scttifta
adjustina:
2.
Hcrilontal
seu
ina
adju:s.tina
screw.
5Cf'CWS..
screws can
pass through the enlarg<-d ends of the keyhole
slots in the lamp rim.
This
will
enable
the
light
unit
to
be
withdrawn
sufli-
cicntly
to give
attention to
the
wiring and bulbs.
Section
N.17
S
ETTI
NG
THE
HEADLAMPS
The
lamps
•hou.
l d
be
set so
that
the main driving
beams
are parallel with the
road
surface (Section N.21)
or in accordaooe
with
your local
regullltions.
If
adjustment is
required,
lhis
is
achieved
by
remo,ing
the
plated rim
and dust-excluding rubber
as indicated
in
Section
N.16.
Vertical
adjustment
can
then
be
made
by turning
the
:.<o'CwS
nt the
top of the lamp in
the
necessary
direction.
Horizontal adjustment
can be
effected by
using
the
adjustment
screws on
each side
o
f
the light unit
(sec
Fig.
N.12).
Section N.18
REPLACING
HEADLAMP
BULBS
Twist the back-sheU
anti-clockwise and
pull it
off.
Withdraw the bulb from the
holder.
ln<crt the
replacement
bulb
in the
holder, making
sure that
the
slot in the
periphery
of the bulb flange
engages
the projection in
the holder.
Engage the projections
on
the back-shell with
the
slots
of
the
holder,
press
it on.
and twist
it
clockwise until
it
e
ngage<
with
its
c•tch.
N.
16
Section
N.19
REPLACING
THE LIGHT
Ul\
" ITS
Position the
light
unit
so that the
heads
of
the adjusting
screws
coincide with the
enlarged
ends
of
the attachment
slots. Push the light
unit
towards the wing to compress
the springs
and
turn the unit to
the right
as
far
as it
will
go, that is, approximately tin.
(13
mm.).
Replace the dust-excluding rubber
on
the light rim
with its
flanged
face
forward
and
refit
the plated
rim.
Section N.20
TAIL
LAMPS
AND
STOP LIGHTS
The tail lamps
are of
the double·filament
type,
the
second
filament giving
a marked
increase
in
briUiance
when
the
brakes are
applied.
To obtain
access
to the
bulbs
remo>·e
the glass
by
withdrawing the
two
screws.
The
bulbs
are
held
in
bayonet-type holders with
offset
pins
to
ensure correct
fitting.
Section
N.21
S
IDELAMPS
To
obtain access to
the
bulb
press
the lamp
front
inwards and tum
it
anti-clockwise until
it is
free to
be
withdrawn.
Re,~rse
this movement to replace the front.
The
locating
pins
on the bulb arc offset
to
ensure
tbat
it
is
fitted correctly to gave increased brilliance when
the
flash ing equipment is
operatins.
Fig.
N.
l3
S
itkltmo
p
bulb
1'~1110
1'111
MCA
(TVro•in
Ca m).
lss
tt~
2.
19-H~

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