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Auto Valve oil drain valve
Posted: Wed Jul 11, 2018 9:55 pm
by rickyricky2
Hi All
Has anyone changed the small shut off o-ring in a Auto Valve BJ1000AHS4X. It appears to be a square o-ring. Mine works but it is out and this is the time to change it.
It looks like a round o-ring would work but I want to do this right.
Thanks
Dick Bryant
1954 C-170B
26248
Re: Auto Valve oil drain valve
Posted: Mon Jul 16, 2018 12:34 am
by daedaluscan
When you say square I assume you mean in section? I have seen many O rings that have flats on the section from long periods of compression.
Is it possible that this was a regular o ring that has been deformed?
Just a guess from me, please don't take this as advice.
Re: Auto Valve oil drain valve
Posted: Mon Jul 16, 2018 1:53 am
by Bruce Fenstermacher
There are such things as square (in section) o-rings. I do not know what is suppose to be on the valve in question.
Re: Auto Valve oil drain valve
Posted: Mon Jul 16, 2018 3:48 pm
by n3833v
My thoughts when I replaced my o-ring was that it was a square type o-ring. I replaced with a special oil round o-ring.
John
Re: Auto Valve oil drain valve
Posted: Mon Jul 16, 2018 4:19 pm
by Bruce Fenstermacher
If you have a Saf-Air S1000 in a Continental it takes 2 - MS28775-011 o-rings and 1 - MS28775-012
For the Saf-Air chart for what you should have for a particular engine:
https://www.saf-air.com/products/oil-va ... chart.html
For the o-ring(s) for the valve you should have:
https://www.saf-air.com/products/o-rings.html