[AT] Oil Filter question

[Easley, Greg]

I'm with Bill on this one.  My VAC Case works just fine with the new style filters.
It makes just as big a mess while adjusting valve clearance with the pleated type as
it made with the old rag filters, so I'm confident that there's plenty of oil moving
through the galleries.  I've seen two VAC's that were missing the riser tube from the
filter housing, which essentially results in total bypass of the filter - neither one
of them had experienced any lubrication related engine failure.  The Case feeds the oil
pressure gauge from a hole tapped in the crankcase at the center main bearing and there's
no noticable difference in pressure between the two filter types.  I actually prefer the
new style filter - the oil stays much cleaner between changes than it did with the rag filters.

Greg
http://www.geocities.com/heartland/woods/1416

-----Original Message-----
From: at-bounces at lists.antique-tractor.com [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Bill Brueck
Sent: Saturday, July 09, 2005 7:15 PM
To: 'Antique tractor email discussion group'
Subject: RE: [AT] Oil Filter question


Agreed, but experience on this particular project indicates that there may be sufficient flow to deliver at least some oil even with the filter wide open.  In this case the tractor was running without the little vertical pipe; the filter wasn't even getting wet, and there was no pressure registered at all on the gauge.  But I did have the valve cover off at that time, adjusting the valve clearance.  There was a nice flow of oil up that high on the engine.  And since it did have at least several hours of operation, the mains were obviously getting lubrication.  I had forgotten, or maybe never noticed, the cross-block line Cecil mentions, I don't know if it that was running or not.

I'm still betting that with the pressure that remained with the new style filter installed, the engine was getting plenty of lubrication (albeit less than factory specified), especially considering the evidence that it may have been getting sufficient lubrication even with no filter resistance at all. 

B²
 
Bill Brueck (brick)
Chatfield, MN, USA