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Renewing main beam bulb > < Renewing bulbs for gas discharge headlights

Leon Mk1

Renewing dipped beam gas discharge bulb
Renewing dipped beam gas discharge bulb
  Caution
Warning high voltage!
Before working on headlights with gas discharge bulbs, always switch off the headlights and remove the ignition key.
Then switch dipped beam on and off again. This will eliminate any possible residual voltage.
Removing:
–  Switch off ignition and all electrical consumers and remove ignition key.
–  Remove headlight → Chapter.
   
–  Remove bolt -arrow- and remove sealing cover.
  Note!
The sealing cover is secured with one or two screws, depending on the manufacturer of the headlight.
  N94-0504
–  Release connector by turning connector 90° to left -rotary arrow- and pull off.
–  Turn gas discharge bulb retaining ring to left and remove it
  Caution
t  Within the bulb glass of gas discharge bulbs, pressures can range from between 7 bar (cold) and 100 bar (hot). Temperatures can reach up to 700 degrees Celsius on the glass bulb.
t  Should the glass bulb explode, there is a risk of injury from burning.
t  Always wear eye protection and gloves when removing and installing gas discharge bulbs!
–  Carefully pull out gas discharge bulb.
Installing:
  Warning
t  Do not touch bulb glass when fitting gas discharge bulb. Fingers leave traces of grease on the glass, which evaporate when the bulb is switched on and cause the glass to cloud over.
t  Take great care when handling the gas discharge bulb (ensure the bulb is not stressed mechanically). The bulb glass is extremely fragile and has a high internal pressure.
  Caution
Avoid looking directly into the collimated beam as the UV rays from the gas discharge bulb are about 2.5 times greater than normal halogen bulbs.
–  Insert the new bulb such that the locking lugs on the disc plate are positioned in recess on the reflector.
  N94-0505
–  Fit the two slots -arrow- of the retaining ring -1- over the locating lugs -2- on the gas discharge bulb -3- and secure by turning clockwise.
–  After installing a new gas discharge bulb check function of headlight.
–  Adjust headlight with gas discharge bulb → Chapter.
  N94-0386

Renewing main beam bulb > < Renewing bulbs for gas discharge headlights