Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

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carlh6902
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Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#1 Post by carlh6902 » Fri Apr 14, 2017 4:23 am

I finally got around to finishing this one up for distribution:

This shows how to do a teardown and rebuild of the coaxial focus mechanism in an Olympus BH-2 stand, to get rid of the old gummy grease and make it perform like-new again. I hope somebody finds this useful.

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8

Carl
Last edited by carlh6902 on Mon Apr 15, 2019 1:09 am, edited 4 times in total.
--- If you're in the Kansas City area and you need help with an Olympus BH-2 scope, PM me. I love to work on these things ---

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75RR
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#2 Post by 75RR » Sat Apr 15, 2017 12:09 am

That is a very finely detailed booklet, nice touch to have internal links as well.
Very impressive!

You should place this in the Resources (online, books etc.) section so that it is easier to find in future.
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

MichaelG.
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#3 Post by MichaelG. » Sat Apr 15, 2017 5:20 am

Many thanks for sharing that
... a very thorough, and nicely presented, document.
.
MichaelG.
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carlh6902
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#4 Post by carlh6902 » Mon May 08, 2017 3:47 pm

For anybody who's interested, I just updated the BH2 focus rebuild document linked above to revision 2 (now 3). This revision corrects a few minor errors, as listed on the cover sheet. The link above will take you to this new revision.

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8


Carl
Last edited by carlh6902 on Mon Apr 15, 2019 1:11 am, edited 3 times in total.
--- If you're in the Kansas City area and you need help with an Olympus BH-2 scope, PM me. I love to work on these things ---

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Crater Eddie
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#5 Post by Crater Eddie » Mon May 08, 2017 3:54 pm

Great resource! Thanks very much for your work on this.
CE
Olympus BH-2 / BHTU with Olympus E-P1 MFT camera mounted
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hkv
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#6 Post by hkv » Mon May 08, 2017 7:25 pm

WOW! Very impressive work!

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lorez
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#7 Post by lorez » Mon May 08, 2017 9:10 pm

Very Nice Job, Carl.

It's every bit as good (and better, in many instances) as what they gave us at the Olympus school... back in the day

lorez

carlh6902
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#8 Post by carlh6902 » Fri Jun 02, 2017 12:45 am

I will just add this to this old thread. Its a procedure to teardown and rebuild the coaxial focus mechanism in an Olympus BH-2.

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8


Carl
Last edited by carlh6902 on Mon Apr 15, 2019 1:13 am, edited 2 times in total.
--- If you're in the Kansas City area and you need help with an Olympus BH-2 scope, PM me. I love to work on these things ---

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75RR
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#9 Post by 75RR » Fri Jun 02, 2017 10:56 am

Nice work - very nicely detailed step by step approach.

Seeing your use of a heat gun reminds me that I have a stuck part (old dry grease),
I have been thinking of borrowing a hair dryer and focusing the air flow. How hot does it need to be?
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)

carlh6902
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#10 Post by carlh6902 » Fri Jun 02, 2017 4:48 pm

Any heat at all should help the old grease move. More is obviously better, but in some cases you have to limit the heat due to nearby plastic parts, etc. I picked up a heat gun at Harbor Freight for under ten bucks, and would not try to tear into an Olympus BH-2 scope without it. Not just for the dried grease, but they staked so many fasteners with adhesive that heat is a must-have.

Carl
--- If you're in the Kansas City area and you need help with an Olympus BH-2 scope, PM me. I love to work on these things ---

billbillt
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Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

#11 Post by billbillt » Fri Jun 02, 2017 5:47 pm

carlh6902 wrote:Any heat at all should help the old grease move. More is obviously better, but in some cases you have to limit the heat due to nearby plastic parts, etc. I picked up a heat gun at Harbor Freight for under ten bucks, and would not try to tear into an Olympus BH-2 scope without it. Not just for the dried grease, but they staked so many fasteners with adhesive that heat is a must-have.

Carl
Thanks for the tip, Carl..

BillT

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