Head And Tail Lamps; Headlamp; Lucas Light Unit; Replacing The Light Unit And Bulb/Parking Lights - Royal Enfield 250 CLIPPER Workshop Maintenance Manual

ROYAL ENFIELD WORKSHOP MANUAL

1. Headlamp

The "250 Clipper," "Crusader 250," "Crusader
Sports" and "350 Bullet" have a Lucas Light Unit
MCF 700 built into the Casquette
Fork Head, which contains twin parking lamps,
the ammeter and the switch.
The "Super 5" employs Lucas Light Unit MCF
700 P built into the Casquette with a single
parking bulb within
"Continental" and "Continental GT" has the MCF
700 P unit built into a separate headlamp, which is
mounted on the forks by means of a bracket.

2. Lucas Light Unit

The unit incorporates a combined reflector
and front lens assembly (see Fig. 1). This
construction ensures that the reflector and lenses
are permanently protected, thus the unit keeps its
high efficiency over
"prefocus"bulb is used, the filaments of which are
accurately positioned with respect to the reflector,
thus no focusing device is necessary.
The bulb has a large cap and a flange, which has
been accurately positioned with relation to the bulb
filaments during manufacture. A slot in the flange
engages with a projection on the inside of the bulb
holder positioned at the back of the reflector.
A bayonet-fitting adaptor with spring-loaded

Head and Tail Lamps

the unit, whilst
along period.
contacts secures the bulb firmly in position and
carries the supply to the bulb contacts.
The outer surface of the lens is smooth to
facilitate cleaning. The inner surface is formed of a
series of lenses which determine the spread and
pattern of the light beams.
In the event of damage to either the lens or
reflector a replacement light unit must be fitted.
3. Replacing the Light Unit and Bulb
Slacken the securing screw at the top of the
headlamp rim. Remove the front rim and Light Unit
assembly.
Withdraw the adaptor from the Light Unit by
twisting it in an anti-clockwise direction and pulling
it off. Remove the bulb from its locating sleeve at
the rear of the reflector.
Disengage the Light Unit securing springs from
the rim and lift out the Light Unit.
Position the new unit in the rim so that the word
"TOP" on the lens is correctly located when the
assembly is mounted on the headlamp. Refit the
securing springs ensuring that they are equally
spaced around the rim.
Replace the bulb and adaptor. The bulb must be
the Lucas "prefocus" type-6 v. 30/24 watt
Lucas No. 312.
Locate the bottom of the Light Unit and front
rim assembly in the headlamp shell or in the fixing
rim attached to the Casquette fork head. Press the
front on and tighten the securing screw at the top of
the headlamp.
the
4. Parking Lights
Access to the parking bulbs is obtained by
removing the parking lamp rim (see Fig. 2). This is
forced over the edge of the rubber lamp body and is
additionally secured by means of a small fixing
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