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  #31  
Old 11-09-2012, 09:31 AM
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By all means, check out the EAA video on oil filter inspection. One comment on it however: its actually kind of tough to cut out the paper on the larger size oil filters, and a bit of a safety hazard for your fingers. It's also not clear to me what the point of doing that is when you can just put the whole thing in the solvent wash without ever cutting out the paper.
Any thoughts to the contrary?
Erich
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  #32  
Old 11-09-2012, 10:13 AM
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Washing a filter out with solvent, pouring thru rags, etc? Thats crazy talk. Just cut out the pleats, wrap them in paper towels, then squeeze the oil out with your bench vise. Takes all of 30 seconds to do and you will see every bit of trash in your filter.
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  #33  
Old 11-09-2012, 12:48 PM
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Not sure about the crazy talk....I think the point of the solvent wash and rag treatment is to consolidate all the debris into a neat little pile that can quantified a little better and perhaps be segregated by type. Not much trouble to do really.

Erich
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  #34  
Old 11-09-2012, 01:17 PM
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While you're at it you should look at the pleats with a scanning electron microscope, and perform a spectral analysis on every flake you find to determine the origin.
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N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
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  #35  
Old 11-09-2012, 01:34 PM
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Quote:
Originally Posted by rocketbob View Post
While you're at it you should look at the pleats with a scanning electron microscope, and perform a spectral analysis on every flake you find to determine the origin.
Won't do you much good, unless you are also running the oil through a mass-spec analyzer...
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  #36  
Old 11-09-2012, 01:57 PM
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Quote:
Originally Posted by rocketbob View Post
Washing a filter out with solvent, pouring thru rags, etc? Thats crazy talk. Just cut out the pleats, wrap them in paper towels, then squeeze the oil out with your bench vise. Takes all of 30 seconds to do and you will see every bit of trash in your filter.
I will follow what I was taught which is exactly how the EAA video presents. I am sure you're correct Bob, but I don't change oil everyday, it is a few times a year, so the extra minute or two it takes to do the procedure isn't a big deal to me.
I will categorize what I do as "not sure if it helps, but it sure doesn't hurt".
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  #37  
Old 11-09-2012, 02:03 PM
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Oh I forgot you might be able to pan the varsol for gold.
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Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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  #38  
Old 11-11-2012, 05:55 PM
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Default Another Data Point


Gathered this amount of material from another Champion 48110 oil filter.

Here is the material on a magnet that was placed inside a glove so that the material could be removed from the magnet and placed in a bag to quantify the amount for comparison to other samples. This sample is clearly significantlly more than the sample showed in the picture that started the thread. This sample was also obtained by washing the filter element in a solvent. It was allowed to sit and the solvent poured off and left for the balance to evaporate. The residual was scraped from the container and gathered into a bag. The entire contents of the bag was then exposed to a magnet of which attracted all of the material.
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  #39  
Old 11-11-2012, 06:37 PM
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Enough metal there and then some to warrant a complete teardown.
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Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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  #40  
Old 11-11-2012, 06:41 PM
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If this was the next filter, I'm with Bob for sure. You just won an overhaul. Don't forget the cooler flush and governor if you've got one.
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