help needed lens cleaning Nikkor 50mm 1.4 AIS and 105mm 2.5 AIS

This is my first post and would appreciate some newbie help. I have
purchased 2 MF lens that both have dirt/junk inside the elements. I
have disassembled the 50mm from a breakdown found on the web. I have
the lens core out. Near the front element is a "sorta" screw. It looks
like a screw, but is "off-center"; and "wobbles" when turned. It
doesn't unscrew. Do I need to position this at all? The front element
is supposedly right-hand thread and I was going to make a pvc
remover/glue on it, to screw out. Question really is do I need to do
anything with the "wobble" screw. I don't want to break it!

I also have a 105/2.5 MF that has quite a bit of dirt inside. Any
thoughts/procedures or links that would help me with this one.

Darn these screws are small!
thanx for your help!

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>
> This is my first post and would appreciate some newbie help.
> I have purchased 2 MF lens that both have dirt/junk inside
> the elements. I have disassembled the 50mm from a breakdown
> found on the web. I have the lens core out. Near the front
> element is a "sorta" screw. It looks like a screw, but is
> "off-center"; and "wobbles" when turned. It doesn't unscrew.
> Do I need to position this at all? The front element is
> supposedly right-hand thread and I was going to make a pvc
> remover/glue on it, to screw out. Question really is do I
> need to do anything with the "wobble" screw. I don't want to break it!
>
> I also have a 105/2.5 MF that has quite a bit of dirt inside.
> Any thoughts/procedures or links that would help me with this one.

Malcolm,

I can't help you with the repairs, but I have both of these lenses myself.
How/where did you find the "breakdown" for them?

I'm also interested in fixing a 55 mm f2.8 Micro Nikkor with a very stiff
focus ring.

Phil Burton

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.

http://rick_oleson.tripod.com/index-102.html

Thanx for the reply. Here is the link.

>>> "Phil Burton&quot; < philip-b%40comcast.net">philip-bcomcast.net> 9/10/2007 11:54 am >>&gt;

>;
> This is my first post and would appreciate some newbie help.
> I have purchased 2 MF lens that both have dirt/junk inside
> the elements. I have disassembled the 50mm from a breakdown
> found on the web. I have the lens core out. Near the front
> element is a "sorta" screw. It looks like a screw, but is
> "off-center"; and "wobbles" when turned. It doesn't unscrew.
> Do I need to position this at all? The front element is
> supposedly right-hand thread and I was going to make a pvc
> remover/glue on it, to screw out. Question really is do I
> need to do anything with the "wobble" screw. I don't want to break
it!
>
> I also have a 105/2.5 MF that has quite a bit of dirt inside.
> Any thoughts/procedures or links that would help me with this one.

Malcolm,

I can't help you with the repairs, but I have both of these lenses
myself.
How/where did you find the "breakdown" for them?

I'm also interested in fixing a 55 mm f2.8 Micro Nikkor with a very
stiff
focus ring.

Phil Burton

Messages in this topic (0) Reply (via web post) | Start a new topic

.