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How to take off the focusing knob?

 
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dreatmer



Joined: 10 Jan 2011
Posts: 3

PostPosted: Sun Jul 16, 2017 8:25 am    Post subject: How to take off the focusing knob? Reply with quote

Hi~guys
I want refurbish my old series b,but I got problem when I try to take off the focusing knob.There's a tiny hole on the knob,but it doesn't look like a screw in it. So,is there anybody have clue on this?
Thx~
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jk1981



Joined: 16 Jul 2017
Posts: 3
Location: Germany

PostPosted: Sun Jul 16, 2017 6:42 pm    Post subject: Reply with quote

there are screws on the brass plate und there are srews on the inside of the camera. you will have to remove the lensboard first.
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45PSS



Joined: 28 Sep 2001
Posts: 3556
Location: Mid Peninsula, Ca.

PostPosted: Sun Jul 16, 2017 7:48 pm    Post subject: Reply with quote

Quote:
I want refurbish my old series b,but I got problem when I try to take off the focusing knob.There's a tiny hole on the knob,but it doesn't look like a screw in it. So,is there anybody have clue on this?

Look closely at the knob 180 from the hole you see, is there a round piece that does not match the texture of the knob? The knob is attached to the focus shaft by a pin, it may be tapered meaning one end is larger than the other. Taper pins only go in and come out one way.
Using a pin punch and a hammer drive the pin out while supporting the knob to prevent bending the focus shaft from the smallest end of the pin if applicable.
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dreatmer



Joined: 10 Jan 2011
Posts: 3

PostPosted: Mon Jul 17, 2017 9:40 am    Post subject: Reply with quote

I tried to knock the round piece that you mentioned but it didn't move.So,I will try to knock it harder.Thank you~
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45PSS



Joined: 28 Sep 2001
Posts: 3556
Location: Mid Peninsula, Ca.

PostPosted: Mon Jul 17, 2017 7:32 pm    Post subject: Reply with quote

Put some penetrating oil in the hole and let it sit for a day or two then try again. If you have a hydraulic press it will work better than a hammer and punch.
The knob and focus shaft are brass.
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The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.
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dreatmer



Joined: 10 Jan 2011
Posts: 3

PostPosted: Tue Jul 18, 2017 6:13 am    Post subject: Reply with quote

Thanks for your great advise,it helps me a lot~
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