[AT] Tractor shop question

Bill Brueck b2 at chooka.net
Sun Jan 21 20:25:53 PST 2018


Spencer, McMaster has O-rings that you order by composition, thickness, and
diameter.  I've found them to be the go-to source when I don't find the
right sized ring in my miscellaneous collection, most memorably for a
pressure washer, after wasting a few stops at auto supply stores trying to
find something to fit.   www.mcmaster.com

B²
Bill Brueck
Pine Island, MN


-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Spencer Yost
Sent: Sunday, January 21, 2018 10:33 AM
To: Antique tractor email discussion group <at at lists.antique-tractor.com>
Subject: Re: [AT] Tractor shop question

The regulator is brand new.   So it never worked at all - yesterday was
first install.

I took it apart and tried to find broken/missing/incorrectly installed parts
but could not find anything.  The only thing I could find was an O ring that
seals the plunger when the pressure is "just right". The O ring sits in a
groove but  I think it is too thin and does not exceed the depth of the
groove.

When you turn the pressure all the way off the plunger will sit with enough
pressure as to not leak. But just to soon as you start let some air in,
you're done.  I have an awesome collection of O-rings but I had nothing that
would work. Every one I had in that diameter  were all too thick and
Clearly would not regulate pressure well, if at all, at lower pressures.

Improper part pulling (wrong 'O' ring) at the factory is my diagnosis.

Time for a new regulator/filter because I am not going to waste time and gas
hunting O-rings.   I can take the guts out and just use the filter part of
it.   That way I only have to buy a regulator. But filter/regulator combos
are so cheap and inexpensive relative to a regulator it's hard to justify
going through the extra plumbing and mounting hassle.

Good thing my mother-in-law got me an the Amazon card for my birthday.

Spencer Yost

> On Jan 20, 2018, at 6:59 PM, Carl Gogol <cgogol at twcny.rr.com> wrote:
> 
> Spencer
> I am recalling a few things regarding regulators, but this is truly a 
> case where I have forgotten more than I remember.  Some types do need 
> to continually bleed off, mostly in a static, no flow, condition.  You 
> may specify a zero bleed regulator if you are buying them in quantity.  
> But many regulators can't bleed because of the nature of the fluid it 
> is regulating; toxic, flammable, oxidizer Etc.  There are a lot of 
> tradeoffs in regulator design including zero flow pressure drift, flow 
> range and pressure maintenance over a wide flow range.
> Did the regulator ever work without bleeding?  Does it leak when there 
> is flow?  (try listening for that when you are using an impact 
> wrench.) Carl
> 
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com
> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Spencer 
> Yost
> Sent: Saturday, January 20, 2018 4:12 PM
> To: at at lists.antique-tractor.com
> Subject: [AT] Tractor shop question
> 
> I have a tractor shop question. I put a new air pressure regulator on 
> my air compressor, and it continually bleeds air . It's sort of like 
> when you dial the pressure down and it has to bleed  air on the output 
> side to bring the pressure down? Well it does this all the time. Is 
> there such a thing as a continual bleed regulator? If so that seems like a
really dumb idea.
> 
> Otherwise it acts perfectly. It keeps the pressure exactly right and 
> steady, and if I dial the pressure all the way down to zero it does 
> shut the air supply completely off.
> 
> 
> Of course I may have a defective regulator. And of course I just 
> recycled the box and instructions.  I bought it about a year ago and 
> just now getting around to installing it so I have no receipt nor am I 
> even 100% sure where I got it.  All I remember is it was on sale (-;
> 
> Spencer Yost
> 
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