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Old May 24th 08, 04:10 PM posted to rec.aviation.soaring
bumper
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Posts: 322
Default Grob 103 question


"dsbrantjr" wrote in message
...

Olin: There is an easily-obtainable instrument used for ear surgery
called an "ear polypus" which might be helpful in reaching the o-ring
to remove it and also to put a new one in. Here's a link to one
possible source:
http://www.urbachletter.com/Archive/...ilePolypus.htm.
If the polypus cannot grab the o-ring you might be able to use it to
use a small wire hook to remove the ring. I think I paid $5 for mine
at an amateur radio hamfest. Good luck with your repair.



I also suffer tool addiction. Have all three sizes of the Crocodile Polypus
(got the wife convinced tools are "off budget" and don't count against one's
toy account) - - got them at tool stores over the years.

Haven't needed to replace the O-rings in probe socket - yet. If the small
O-ring failed, I'd sure be tempted to try almost anything rather than
cutting holes in the tail. How about removing the old O-ring using a
modified dental pick (bend a small 90 degree in a long skinny pick)? I'd
also try viewing the procedure with a bore-sope, I've got one that's .165"
OD, but they are available much smaller. It would be possible to insert
bore-scope alongside probe being used to remove old O-ring.

To insert the new O-ring, I'd make an insertion tool using thin-wall SS
outer housing. Compressed O-ring would be pushed out of tube with plunger.

bumper