MG MGA Twin Cam Workshop Manual page 177

N
THE ELECTRICAL EQUIPMENT
Section N.30
MODI FIED D YNAMO J' ULLEY JL "'D FAN
BELT
To increase the dynamo charging rate at a ny given
engine speed a smaller dynamo pulley (Part No. AEH605)
and a shorter fan belt (Part No. AEH621) were intro-
du«<< at Engine :-lo. 272. This modification raise$ the
dynamo pulleyfcranlcshaft pulley speed ratio to 1·2 :
I.
The old and new dynamo pulleys and fan belts are
interchan~abl e in sets.
Section N.31
S EALED BEAi ' \1 U C IIT UNITS
Cars exported to the U.S.A.
arc now fiued at the
Works with headlamps incorporating sealed beam light
units.
To change a sealed beam light unit, remove the head-
lamp rim and slacken the three retaining screws securing
the light unit rim. Rotate the rim anti-clockwise to dis-
engage the slotted holes from the heads of the retaining
.crews. Pull the light unit forward and disconnect the
three-pin socket to release it from the back-shell.
N.22
Fi&· N.11
Rear stop lamp and flasher lamp
Section N .32
MODIFIED FLASHING DIRECTIOl' INDI CATORS
Commencing at Chassis Nos. 2193 (Standard) and
2292 (Coupe), separate front and rear amber flashing
direction indicators
were
introduced. The electrical relay
is not used with this type of indicator.
To remove the flasher lamps. fold back the rubber
flange surrounding the lamp
rim
and remo\-e the rim and
lens. The appropriate replaeemeot bulbs arc listed in
Section N.24.
MGA (T
win Com). Issue I. 2776~