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Old Dec 29, 2012, 02:38 PM
I'm a pilot... 100 yrs to late
Thermalin's Avatar
USA, FL, Palm Harbor
Joined Jan 2005
3,423 Posts
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OS 61 needle valve O ring install

Any ideas on how this should be installed. I'm 99 sure this is the correct size but it's very, very tight and difficult to roll over the threads let alone the hump to nestle in the groove.
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Old Dec 29, 2012, 02:59 PM
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DarZeelon's Avatar
Israel, Ramat HaSharon
Joined Nov 2003
1,137 Posts
Since you're obviously not the manufacturer, you don't have access to an expander that will allow this neoprene O-ring to simply fall into the groove; and you've got little choice...

Just use your fingernails to work it over the threads and then over the 'hump'.
A little oil will help.

Good luck!
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Old Dec 29, 2012, 06:43 PM
I'm a pilot... 100 yrs to late
Thermalin's Avatar
USA, FL, Palm Harbor
Joined Jan 2005
3,423 Posts
True.. i can come up with something to expand it.. just wasnt sure how much expansion it would take. I guess at least enough to clear the hump plus that of the tool expanding it. I'll try some oil as well... thanks..
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Old Dec 29, 2012, 08:42 PM
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williame3590's Avatar
Canada, ON, Caledonia
Joined Aug 2007
2,807 Posts
Put the o-ring in some hot water for a few minutes before installing.

Bill
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Old Dec 30, 2012, 05:58 PM
use the 4s luke, use the 4s...
scrub monkey's Avatar
Australia, QLD, Booyal
Joined Sep 2012
856 Posts
use a pin and CAREFULLY pull it over as if you were putting the tire back onto the rim of a bike with a couple of screwdrivers. im sure everybody can remember doing that
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