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Topic: Cummins fuel filter on enegine (Read 845 times) previous topic - next topic

Cummins fuel filter on enegine

Had a fuel leak, and found the small spin on fuel filter mounted on the passengers side of the 8.3 Cummins was the culprit. I looked in the service records and they were current. Problem is, a mechanic that doesn't know it's there only changes the main filters. This was so old, the drain valve was crystalized from heat. I ordered one from Napa and it's now fine. It's tough to see. I found the best way to replace it is from the top with the bed up. Just a heads up. It started leaking in my garage so I can't bitch! Bought 3 of them with shipping from Fleetfilter.com for $37.55 shipped
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #1 –
Quote from: dans96u295ft –
Had a fuel leak, and found the small spin on fuel filter mounted on the passengers side of the 8.3 Cummins was the culprit.

Welcome to the forum.

I started where you are now, with knowledge of my U295.  This forum was and is how I learned.  If you update your signature it will be both a benefit to you and other forum members.

Picture?  Link to or part number?
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
Samsung Residential #RF20HFENBSR,
Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
Extreme Full Body Pt w/hdlmps, new furn/floor, 4 down Lexus 2004 GX470 AWD curb weight 4,740 lbs
Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
"Don't criticize what you can't understand" Bob Dylan

Re: Cummins fuel filter on enegine

Reply #2 –
If a tech only knew of the single filter, there is an extremely high likelihood that you have the WRONG MICRON FILTER.

If only a single filter, it must be of the micron rating speced by the engine manufacturer for that fuel system.

If two filters, you would never use the same micron primary followed by the same micron secondary (the one on the engine) filter.  The primary would be courser (think of it as the "rock catcher") and the secondary the fine filter.

Suggest you post the PN for both primary and secondary fuel filter or if you have access to the info, verify that you have the correct course, followed by fine filter elements.
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: Cummins fuel filter on enegine

Reply #3 –
Napa Gold 3777 or Wix  33777 on the engine. 1996 cummins 8.3, 300 hp
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #4 –
That's a 10 micron filter so is fine.
Regards,
Brett

'99 42' Foretravel Xtreme
'14 Brown Motorsports Stacker
'05 Chevy SSR
'02 BMW R1150R

Re: Cummins fuel filter on enegine

Reply #5 –
And the primary filter element??

10 micron secondary is a little on the course side-- many use a 5 micron secondary.

Cummins or your manual should be able to tell you their requirement on how fine a filter (secondary filter) they recommend.
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: Cummins fuel filter on enegine

Reply #6 –
Ok. Thanks guys. I'll stay with the 10 micron for now.  I'm not full time and put 2500 miles a year on average.
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #7 –
Dan,

When you get a chance, DO post the PN for your primary filter (the one mounted to the chassis, not the engine).

We just want to make sure both are "compatible".  Said another way, if it turns out to be a 10 micron, followed by a 10 micron secondary, it is NOT correct.
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: Cummins fuel filter on enegine

Reply #8 –
Ok. Just hung up with Cummins, 1-800-286-6467 and here is what they require for micron filtration
fuel spin on FF-5052= 10 microns
fuel-water separator spin on FF-1280=  20 microns
Oil filter LF-9009=  30 microns
That number can be called 24-7 and it's free
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #9 –
And........What primary filter did the tech who did not know about the secondary filter put on there???
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: Cummins fuel filter on enegine

Reply #10 –
I always double check any source for parts with this.  Enter engine serial number from engine plate, and you are on your way.

Genuine Cummins Parts

https://catalog.cumminsfiltration.com/catalog/CatalogSearch.do?_locale=en&_region

https://play.google.com/store/apps/details?id=com.cummins.filtration

Cummins lists my Part Number 3843760, FS 1251, 20 micron, for fuel water seperator.  I have a 97 cummins 6C8.3 325 hp.

Beamalarm shows my orig filter to be Racor B32002, it was and still is avaiable at 30 micron. When I purchased my U295 with 6C8.3 it had Baldwin BF5813 which is 25 micron, also has water drain built in.  20 to 30 will be ok.
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
Samsung Residential #RF20HFENBSR,
Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
Extreme Full Body Pt w/hdlmps, new furn/floor, 4 down Lexus 2004 GX470 AWD curb weight 4,740 lbs
Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
"Don't criticize what you can't understand" Bob Dylan

Re: Cummins fuel filter on enegine

Reply #11 –
I haven't got to the main filter yet. It's 14 degrees here. That will be next and then I should have the correct filtration for fuel.
Thanks for all the help and suggestions
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #12 –
The parts I listed are for a 1996 Cummins 8.3 by the serial number to Cummins help line
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #13 –
Looked at the primary filter-water separator and it is the correct filter! Thankful and good to go!
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #14 –
Jack L, Looks like the Racor B32002 includes the sight bowl and is a 30 micron. The Baldwin is the cheapest for the filter only. I'll order a Racor. Looks like the Cadillac of filters
Thanks for the info
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #15 –
It is a 3442 fleetguard with a 30 micron level
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #16 –
Quote from: dans96u295ft –
It is a 3442 fleetguard with a 30 micron level

Perfect.  A 30 primary followed by a 10 secondary is a good "stair step" from course to fine.
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: Cummins fuel filter on enegine

Reply #17 –
All fuel filters with the see-thru water bowl I've found are 30 micron. Cummins recommends  20 microns.  With a 10 micron on the engine and since it has a 30 on it and runs fine, I would say I'm good with a 30. Any thoughts
1996 U295-36, Cummins 300hp, 8.3. Build number 4864. Vin number 1F97D536XTNO54271. Purchased October 31, 2019.

Re: Cummins fuel filter on enegine

Reply #18 –
30-10 is just fine.
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