Lotus 2004 Eleven Service Notes page 326

Lotus Service Notes
accessed from behind the lamp. Turn clockwise to adjust the beam to the right.
- To adjust the vertical aim of the main beam, adjust the dome headed screw at the lower outboard side
of the lamp, accessed from behind the lamp. Turn clockwise to raise the beam.
7. Repeat for the RH lamp.
8. Re-fit the cover/mask assemblies complete with edge seal to the body, and secure with the three socket
head screws and washers.
Headlamp Cover Seal
The headlamp cover/mask is sealed to the body aperture by an extruded synthetic moulding, supplied in
straight lengths. The seal needs to be cut to length to be a snug fit around the periphery of the lamp and the
two ends bonded together using a suitable adhesive such as Permabond C2 or similar. The seal is then fitted
to the headlamp cover with the narrower face uppermost, and with the longer leg of the lower face against the
mask.
Cover/mask seal
b342
Headlamp Units - '07 M.Y. Onwards
New headlamp assemblies introduced for '07 model year are unchanged in styling, but are redesigned
as sealed units to comply with legislative demands, and comprise main/dip/sidelamps with integral reflectors,
mask and cover. An optical feature in the centre of the cover is designed to gather refracted light and prevent
scatter above the dip beam cut off. Certain atmospheric conditions may result in some condensation inside
the lamp unit, but this should disperse with the lamps in operation and cause no concern.
The main beam lamp is mounted lowermost as previously, and uses a free-form reflector and 55W H7U
bulb. Above that is the projector type dip beam lamp with 55W H7U bulb, and at the top of the unit is the side/
parking lamp with W5W bulb, the latter function formerly incorporated into the main beam lamp. Each complete
lamp unit with hard coated polycarbonate cover is fitted to the body via a remodeled clamshell housing and is
secured by three M10 and one M6 fixing. Note that the clamshell construction renders retrofitment of the new
lamps to earlier models impracticable.
Access to the bulbs is available after removing the wheelarch liner front section, and then the appropriate
grommet over the main or dip beam bulbs. The alignment relationship between main and dip beam lamps is
fixed, but two cross-head adjusters are provided on the back of the headlamp housing by which the whole lamp
unit may be adjusted. The outboard screw adjusts vertical alignment, and the inboard screw horizontal.
Vertical adjuster
Lateral adjuster
Vertical adjuster
Lateral adjuster
High beam lamp
Low beam
lamp
m257
Section MP
Headlamp cover
Body
Mask
Page 23