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ISM02 fuel filter

I lost power coming up the mountains west of Roswell, NM. I changed the primary filter and completed the trip ~30 miles.  I crawled under to change the secondary filter today and it was a FS1212.  On the beamalarm.com website it shows a FS1282.  They appear the same only the FS1282 is noticeably shorter.  The FS1212 was installed by Cummins Southern Plains about 800 miles ago. I am assuming the FS1282 is just a lower capacity unit.  Since that is all I had as a spare I installed it.  Does anyone know the difference between the two filters other than capacity?
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: ISM02 fuel filter

Reply #1 –
Steve,

A quick look on the Wix cross reference site suggests that both those filters cross to 14 micron element Wix filters.

That is OK for a PRIMARY but most Cummins engines require a 5 micron SECONDARY element.

I would contact Cummins/Fleetguard to verify the correct SECONDARY filter for your engine.
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: ISM02 fuel filter

Reply #2 –
I went to RV and pulled out the original Foretravel manual.  It to says FS1282.  Since you say they are both the same Micron, I can only assume the FS1212 is just larger.
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: ISM02 fuel filter

Reply #3 –
Particularly with the water drain and course micron rating, that sure looks like it was designed as a PRIMARY filter.

On this, I would rely on Cummins advice over Foretravel's 12 year old advice.
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: ISM02 fuel filter

Reply #4 –
Seems like Cummins Southern Plains would have installed the correct filter.
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: ISM02 fuel filter

Reply #5 –
Mine is an 03 ism 450  primary wix 533621 30 microns. Secondary wix 533407 5 microns. Primary has screw on bottom plastic piece with drain. Secondary also has drain.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.
 

Re: ISM02 fuel filter

Reply #6 –
Finally received an email response from Cummins Tech Support.  The filter is supposed to be FS1000 or FS1282
Steve DeLange
2005 U320T 40'
Pearland, Texas