Sticky focusing ring on a 90mm TE

[fredus]

Hi there,

 

I'm very happy with my 90mm TE but the focusing ring is a bit sticky

compare to my 35 and 50 summicron. Basically it's not smooth as I

would like to. Is there anything I can do by myself or am I better off

to have it CLAed by some specialist (DAG ? Sherry ?)

 

Thanks !

 

Fred

[george_b1]

I have a late model 90 TE (Thin) that gradually went the same way. I sent the lens to the US Leica repair folk. They apparently regreased it, and it's fine. DAG or Sherry will probably be cheaper and more responsive.

 

George (The Old Fud)

[Jochen_S]

I'm suffering from the same problem with the 90mm cron. The local repairfolks told me 40 Euro will do, but I'll have to leave a camera for recalibrating. (I'll do so as soon as I 've payed the stuff) My own attempts with oil were successles because the focusing tube hides the helical too well. - I had stunning results with Molykote A in my Agfa.

If you have watchmakers hands you might be able to do the job yourself, but I 'd prefer something inexpensive / unimportant to hone my skills.

[ronald_moravec1]

A touch of lighter fluid on the threads you can see applied with a cotton swab may help. Work the lens back and forth to move the solvent around. Moderation is the key. You don`t want solvent moving all over the place.

[huw_finney]

They are not too difficult to strip, clean and relube but getting the helicies back in the right place is a bit (understatement of the year) of a pain. The few drops of thin oil trick usually works for a while.