From digest.v4.n800 Wed Jul 3 05:50:23 1996
From: Looi Cheng Hock <lchock_at_pop.jaring.my>
Date: Wed, 03 Jul 1996 16:52:52 MYT
Subject: Re: Cloudy Headlights problem
On Wed 3 Jul 1996, Arthur Manowski <manowski_at_tartarus.uwa.edu.au>
>Just wondering if anyone has any ideas on how to clean the inside of my
>four headlights. The car is an E28 but i have seen lots of other BMW's
>with the same problem. The lights appear to be coated with a white
>residue on the inside, making them look cloudy.
It's a little tricky and difficult, but can be done.
You won't be able to return it to mint condition though, but will
look better, that's all. <grin>
Without doubt, you'll need to remove them and work over a
clean table/work-bench. You'll need clean titrated water to
dilute *glass-cleaning* liquid - they come in many brands.
Next, you'll need a length of *steel* wire about 1/8th" thk.
Formed it to a contour of the reflector on one end and the
lens on the other end - long enough to grab it in the centre.
Make sure you file/polish the ends round and smooth.
Now, get strips of *fluff-free* clean/new cloth - preferably cotton
and tightly wrap the whole length of the *formed steel wire* such
that they are thicker along the 2-3 inch length on both ends.
Try to insert the ends thro the bulb socket - easier if the lights
uses H4, tight fit if H1.
The process of cleaning is such that you wet the tool made,
just sufficiently moist - not dripping, and insert - clean!
It will take some effort until you get the best result.
Change the strip of *fluff-free* cotton strips regularly during
the cleaning process.
The reflector score easily - so do be gently!
I had been doing such things all along. <grin>
Of course, if the lens too *blurred* due to chippings,
replace with new... easier!
ps. If the rubber protective caps that seal the
bulb over the light socket looks aged, replace them.
Water can and do *seeps* inside the light unit, due
to *convection* set up when light unit warms up and
>Thanks in advance for any info.
>Arthur '82 528i
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