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Topic: Air filter change  (Read 1429 times) previous topic - next topic

Re: Air filter change

Reply #25
We have a inline Donaldson filter seperator part number H000878,keeps dirt and water from getting to the actual filter.Most of
the filter enclosures Foretravel used were Donaldsons and have a label somewhere with the filter number,and from what I have
seen they used what was availible at the time,Jerry's 96 270 may not have the same air filter as mine.

I don't have one of those on my 98.  Could you post a picture of where it is installed on yours?  I'd consider installing one if it works, especially at keeping water out of the regular air filter which seems to be a problem due to the location of our air intakes when driving in the rain.
Robert
Build # 5304
1998 34' U270 Cummins 6CTA8.3

Re: Air filter change

Reply #26
Referencing the Beamalarm website details this is what I feel is good advice regarding air filter service:
http://www.beamalarm.com/Documents/know-your-air-cleaner.htm

Also somewhere in my memory I remember that on the Donaldson filter housing on my coach the filter minder hose fitting is mounted in the end cover. This provides a sealed area where the filter minder can read filter restriction. For this to happen there must be small, maybe 1/16", hole in the metal plate at the end of the air filter. If you have a filter that doesn't have this hole the filter minder won't ever read a restriction. There are filters out there that appear to be exactly like the OEM  filter but lack this hole required for the filter minder to work. I learned this the hard way.

Steve
Steve & Sandy
2003 U320 4220 WCDS, build#6160
Motorcade #17794
USMC '67-'71

Re: Air filter change

Reply #27
Has anyone looked into spraying a thin coat of oil on the new filter to close any potential gaps leading to dusting? Some high performance filters use this method, although, in gas engines, I imagine too much oil could damage exhaust sensors. It most likely would not harm a diesel. I will look into it, good thread.
'The strength of the effort is the measure of the result'
1995 U320SE
40'
#4740
#17648

Re: Air filter change

Reply #28
Has anyone looked into spraying a thin coat of oil on the new filter to close any potential gaps leading to dusting?

One would need to know a LOT about the chemistry of what oil would do to paper and resin that make up the filters.  I would not consider it.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Air filter change

Reply #29
Good thought Cube but it just will not work with the paper,that's one reason some of us use a by-pass oil filter,mine holds about
the same amount of oil as the stock filter and goes down to one micron.Years ago Amsoil sold the oil impregnated foam air filters
and about twenty years ago they switched to the blue material,if I were to do anything I would install one of the seperators if I
did'nt have one,we went on a 10k trip to Alaska last year and had some dusty roads and my filter did not look anything like Mr.
Beane's .
96 U270 BUILD 4810
85 380SL
Drummonds TN.

 

Re: Air filter change

Reply #30
Has anyone looked into spraying a thin coat of oil on the new filter to close any potential gaps leading to dusting? Some high performance filters use this method, although, in gas engines, I imagine too much oil could damage exhaust sensors. It most likely would not harm a diesel. I will look into it, good thread.
If you EVEN suspect there are any gaps, replace the filter. Anytime your gauge goes past your recommended restriction number, it's time to replace it. Blowing it off just makes a big mess and you have the potential of tearing the paper element. Replacing the $65 filter sure beats dusting the engine and a $20-$30K overhaul.

It really depends where the engine air intake is located on the body as to how fast it gets dirty. All our coaches are not the same.

Most Foretravels are rear engined and go through filters much faster than a front engine rig.

Pierce

Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)