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Ashai Pentax 6x25 |
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DPI
Optics Apprentice Joined: January/02/2020 Location: UK Status: Offline Points: 286 |
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Posted: February/11/2020 at 13:02 |
Here's a nice little pair of binocs' Sold cheap as " Selling as spares or repairs
because the focusing/zoom mechanism in the center is stuck. The
individual eye focusing mechanism is also stuck." I do not expect any real problems with this. A common problem if they have been kept/stored under poor conditions. A straight forward tear down, clean and re-lube. Get a lot of this with WW2 binoculars normally.
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DPI
Optics Apprentice Joined: January/02/2020 Location: UK Status: Offline Points: 286 |
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Well as suspected the only thing wrong with these was the really old lubrication medium.
The central focusing assembly was entirely seized up with this dried up light grey old lubricant. Extracting the focusing shaft and cleaning it was straight forward so now that works. The individual ocular focusing is due to the same reason but is presenting problems because the unit is so small its difficult get a firm grip on it. So I removed all the glass from the ocular; and it and the focusing support arm are soaking in WD40 in the hope it will slowly permutate into the old lubricant and free it up a bit, to allow it to be removed and cleaned Edited by DPI - February/20/2020 at 12:46 |
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gunut
Optics Apprentice Joined: March/17/2016 Location: Wisconsin Status: Offline Points: 59 |
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you have way more patience the I have...the whole unit would have found a brick wall by now if they were mine...
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gunut
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DPI
Optics Apprentice Joined: January/02/2020 Location: UK Status: Offline Points: 286 |
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Well a man's got to have a hobby. Keeps me off the streets and away from loose women and beer
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Scrumbag
Optics Master Extraordinaire Joined: October/22/2013 Location: London, UK Status: Offline Points: 4205 |
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Hi DPI, If WD40 alone isn't working, try a mix of WD40 and 3in1 oil (Basically pour out some 3in1, spray in WD40 and stir). Not sure why it works but a classic car restorer told me about it and it does seem to work well, particularly small and fine threads. Those little Pentaxs are sweet binos. My Dad has a vintage pair somewhere. Scrummy
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Was sure I had a point when I started this post...
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DPI
Optics Apprentice Joined: January/02/2020 Location: UK Status: Offline Points: 286 |
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Many thanks, I'll try that.
Generally I find WD40 and time generally work. But anything that speeds things up a bit is welcome. This thing is close tolerance and filled with old, dry lube compound. so its a matter of trying to get enough lubricant to soak into the old dry lube, to free things up a bit. It takes time though. so far my all time record is three months and that was trying to remove steel set screws that had rusted into a prism mounting. Eventually they all came out ok.
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DPI
Optics Apprentice Joined: January/02/2020 Location: UK Status: Offline Points: 286 |
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Well finished at last. All the old lubricant removed, stripped down cleaned and put back together again, fully operational now. Just a little touch up on the frame where corrosion has got to black enamel. That's it Going to give them to the wife. |
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Scrumbag
Optics Master Extraordinaire Joined: October/22/2013 Location: London, UK Status: Offline Points: 4205 |
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Really nice job!!
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Was sure I had a point when I started this post...
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DPI
Optics Apprentice Joined: January/02/2020 Location: UK Status: Offline Points: 286 |
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Oh she was thrilled, really thrilled. I did point out that they were shiny and therefore qualified as a gift under our marital arrangements. A strong lecture ensued on the differences between shiny and !SHINY!.
Edited by DPI - March/01/2020 at 02:05 |
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Dogger
Optics Jedi Master Joined: January/02/2007 Location: Ontario, Canada Status: Offline Points: 8915 |
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Great job Don!
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God save the Empire!
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RifleDude
MODERATOR EVIL OPPRESSOR Joined: October/13/2006 Location: Texas Status: Offline Points: 16337 |
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Nice work!
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Ted
Money can't buy happiness... but it's much more comfortable to cry in a Porsche than on a bicycle. |
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Scrumbag
Optics Master Extraordinaire Joined: October/22/2013 Location: London, UK Status: Offline Points: 4205 |
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Ah yes!
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Was sure I had a point when I started this post...
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