Zeiss Jena 135mm/4 aluminium

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Author Message   Xxx1 Tinkerer Username: Xxx1 Post Number: 6 Registered: 04-2013 Rating: N/A Votes: 0 (Vote!) Posted on Tuesday, August 06, 2013 - 12:21 am:        I got above mentioned lens cheaply (practically free). It does have haze from lube (I was able to remove it, the haze was in lens surfaces surrounding aperture), stiff helicoid (found instructions for that) but one problem remains. There is some haze in foremost lens inner surface. I was able to unscrew the cell containing first 4 lenses and unscrew the retaining ring that keeps the lenses in place. However the four foremost lenses won't come out tube holding them. The last lens of these rotates freely so it is not stuck. Can anybody help me?   Xxx1 Tinkerer Username: Xxx1 Post Number: 7 Registered: 04-2013 Rating: N/A Votes: 0 (Vote!) Posted on Tuesday, August 06, 2013 - 09:12 pm:        Impulse transfer did the trick. Have the cell containing the two foremost lens groups (retaining ring removed) in your hand so that the lens won't hit anything and retaining ring pointing downward and hit table several times downward. This way the cell won't move but the last lens group will. Reason for that situation was old oil&dust and lighter fluid forming a air tight seal and vacuum did held the last group in the cell. After cleaning the cell works as it should.

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