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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: herseyb on July 07, 2015, 06:14:19 PM

Title: Cloudy headlamp lense
Post by: herseyb on July 07, 2015, 06:14:19 PM

My new to me 1990 k75's headlamp is all foggy looking and I am getting very poor illumination.

At first I thought it was moisture, but warming it up with a hair dryer didn't work and neither did dabbing it with a napkin on a chopstick.

Well, I can see small rub marks in the filmy layer.

 Next I tried rubbing alcohol and then acetone. Cleared up great when wet, but then back cloudy when dry.

I have the round kind of headlight and removing the clips didn't free the lens. Is the gasket sealed at the factory or is it removable?

Any tips to get a clear lens?

(http://images.tapatalk-cdn.com/15/07/07/ebb03b9ff7b15dcc28d950d7eca7dc95.jpg)

Title: Re: Cloudy headlamp lense
Post by: johnny on July 07, 2015, 06:55:02 PM

greetings

flitz is your friend... (http://www.amazon.com/gp/product/B001447VB2?creativeASIN=B001447VB2&linkCode=w01&linkId=ZK726FSAN3GZEH62&ref_=as_sl_pc_ss_til&tag=shopmotobrick-20)

j o

Title: Re: Cloudy headlamp lense
Post by: herseyb on July 07, 2015, 07:12:06 PM

Roger that. Now I see from this fiche the lense does pop off...

http://www.bikebandit.com/oem-parts/1993-bmw-k75-headlight/o/m83sch349408

Mine seems stuck pretty good but I'll give it another go.  Maybe warming will help loosen the gasket.

Title: Re: Cloudy headlamp lense
Post by: herseyb on July 07, 2015, 11:42:31 PM

Got the lens cover off, couldn't wait for the good polish to show up so I went to town with toothpaste and barkeep's friend. 

Immediate improvement.  It actually throws light now! 

I can't wait to see what it's like when I actually polish it clear.

Thanks johnny.