[AT] Oil Filter question

Sat Jul 9 10:02:35 PDT 2005

Would it not be correct to say that the Allis system is a bypass filter
design, rather than a full flow filter design?  

On an Allis the filter is just one of the various destinations for the oil
pump to feed, so oil is delivered throughout regardless of whether a filter
is even in place or not.  Having some resistance at the filter may be
helpful in forcing more oil to the other destinations, however.

Thus the oil gauge installed at the filter on a bypass system tells you
nothing about the condition of your engine, other than perhaps the oil pump
itself.  As Ron suggests, higher oil pressure readings would tell you it's
time to change the filter.

That being said, the redesigned filter that started all this may indeed be
just fine for the engine, it's just disturbing to the operator.  We're
accustomed to thinking about lower oil pressure as signaling engine wear.

I'm inclined to think the engineers were right that the replacement design
was fine.  But they didn't check with their marketing department: it wasn't
a marketable solution.

B²

Bill Brueck (brick)
Chatfield, MN, USA

Confusion is a higher state of knowledge than ignorance.

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Ronald L. Cook
Sent: Saturday, July 09, 2005 10:50 AM
To: Antique tractor email discussion group
Subject: Re: [AT] Oil Filter question

Charlie,
         I have been down this same road.  No oil pressure showing with the
"non-rag" filter.  I was using an AGCO, no less.  I found an old Fram around
here that I had for a Wisconsin and put that on.  Oil pressure restored.
Then I went to my filter supplier and purchased his remaining Wix rag
filter.  Only one was left there.  Since then, 3 years ago, I understand the
filter has undergone a redesign.  I do suspect, as Bill does, that the
engine is getting oiled fine.  I think the gauge only measures the pressure
in the filter, as the dirtier the filter gets, the higher the pressure
reading.  Dumb design anyway you look at it, but it has worked for longer
than my 61 years!
         I no longer have the Allis B, but I do have a filter around here
yet.  If you were here, I would hand it to you.  Providing I could find it.

Ron Cook
Salix, IA
>I did some searching  online and found several references to the 
>problem with the new design WIX/NAPA filters.  I called the dealer I 
>bought mine from and he swore there was no problem with them but he 
>offered to let me return it (after it had been installed and run) and I
didn't ask him.
>
>Check out this web page 
>http://www.tonystractors.com/images/oilfilterslg.JPG
>
>It shows the correct AGCO filter which is like all the aftermarket 
>filters from CarQuest, Fram, etc. that I've been buying for 40 years.
>Beside it is the new WIX/NAPA filter that  won't work.
>
>Charlie
>----- Original Message ----- From: "Bill Brueck" <b2 at chooka.net>
>To: "'Antique tractor email discussion group'" 
><at at lists.antique-tractor.com>
>Sent: Saturday, July 09, 2005 9:56 AM
>Subject: RE: [AT] Oil Filter question
>
>
>>I have a friend with an Allis WC who inadvertently threw away the 
>>little center pipe once when changing oil filters.  Of course the 
>>tractor did not show oil pressure after that.  Much to my dismay, he 
>>used the tractor (lightly, just a retired guy with a few acres, I 
>>don't think he plowed with it or anything) for a year that way!  I 
>>finally convinced him to bring it over so I could check it for him, I 
>>found the pipe missing and made one for him out of a brake line.  Pressure
restored.
>>
>>So point being I expect the engine was getting oil all along anyway.
>>
>>Will be interested in other posting about this, I've wondered what was 
>>happening with Jerry's WC that year.
>>
>>B²
>>
>>Bill Brueck (brick)
>>Chatfield, MN, USA
>>
>>Confusion is a higher state of knowledge than ignorance.
>>
>>
>>-----Original Message-----
>>From: at-bounces at lists.antique-tractor.com
>>[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of charlie 
>>hill
>>Sent: Saturday, July 09, 2005 8:13 AM
>>To: Antique tractor email discussion group
>>Subject: [AT] Oil Filter question
>>
>>Older Allis Chalmers, Case and maybe some other tractors use a rag 
>>filled oil filter that is presure fed into the filter media via a small
tube that
>>extends up into the filter.   I just bought  2 filters yesterday that are
>>WIX brand (good filters) but they are no longer rag filled.
>>Now they have a rubber bladder inside that the oil tube goes up into.
>>Around the bladder their is an air space and then some filter media 
>>around the perimeter of the filter canister.
>>
>>It looks like a good design but unfortunately my D-14 won't build 
>>proper oil
>>
>>presure with this filter.   AC used the rag filter to "regulate" oil
presure
>>
>>by restricting the flow through the filter media.
>>I assume that this new filter design is made to do the same thing but it
>>doesn't seem to work.   With the old rag filter my oil presure guage moves
>>the needle to about the middle of the guage.  With the new filter it 
>>barely moves off the low presure peg.
>>
>>I checked the WIX web site and they show this filter #51101 as the 
>>proper filter for my tractor however they show it as obsolete and say 
>>it is replaced by #57011 ( I think that is the number).  Does anyone 
>>one have experience with this new design or information about the 
>>filter change, etc.?
>>
>>Everyone around here is out of stock on these filters.  Both the local 
>>NAPA stores show it as back ordered from their distribution center.  I 
>>had to drive 35 miles one way to get this filter and I bought 2 at 
>>$12.99 each. I need to run the tractor.  I guess I'll just  put the old
one back on.
>>
>>Thanks
>>
>>Charlie

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