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Cleaning and regreasing focus on old German roof prism binoculars

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#1 Senex Bibax

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Posted 24 November 2020 - 09:19 AM

I've disassembled, cleaned and regreased several pairs of run-of-the-mill Japanese porro prism binoculars without much problem. Now I have an old pair of Hensoldt roof prism binos with a very stiff focus mechanism and I want to give them the same treatment, but I'm not sure about the differences in the design of the focuser. I don't want to start unscrewing or removing things based on my knowledge of porros, and end up messing up the roofs. Can anyone share some tips based on their experience?



#2 Couder

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Posted 24 November 2020 - 09:55 AM

I take plenty pictures as the procedure progresses - they're easy to delete. I also take light cardboard and label where each screw came from and put it in a hole in the cardboard. Make notes of your disassembly, sometimes how to put it back together is not as straightforward as we hope. A complete guide is in my signature.



#3 Ant1

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Posted 24 November 2020 - 10:07 AM

Hi

 

Specific to roof prisms : don't hurt the roof edge.

 

Regards

Ant1




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