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Topic: U320 fuel screen (Read 738 times) previous topic - next topic

U320 fuel screen

Anyone know part number and seal numbers to the inlet screen on the fuel filter housing?.
Thank Scott
Scott and Kim Davidson
If you're going to be dumb, you got to be tough.
DEGOIWKY
Don't ever get old, it will kill you
June 30, 2020
2001 U320 3610 Barn find
Build 5834

Re: U320 fuel screen

Reply #1 –
Picture
Scott and Kim Davidson
If you're going to be dumb, you got to be tough.
DEGOIWKY
Don't ever get old, it will kill you
June 30, 2020
2001 U320 3610 Barn find
Build 5834

Re: U320 fuel screen

Reply #3 –
It's cleanable and I'm sure you have an O ring set to match what comes off.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: U320 fuel screen

Reply #4 –
Thank you Dan
Scott
Scott and Kim Davidson
If you're going to be dumb, you got to be tough.
DEGOIWKY
Don't ever get old, it will kill you
June 30, 2020
2001 U320 3610 Barn find
Build 5834

Re: U320 fuel screen

Reply #5 –
Yellowed. Old. Probably original.  Everything thing else is fresh, time for it too.
Scott
Scott and Kim Davidson
If you're going to be dumb, you got to be tough.
DEGOIWKY
Don't ever get old, it will kill you
June 30, 2020
2001 U320 3610 Barn find
Build 5834

Re: U320 fuel screen

Reply #6 –
I just carry a new spare and leave the yellow one on until it gives up. I'm sure mine is original too.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: U320 fuel screen

Reply #7 –
I also have a new spare. If (when) it gets clogged up with black flakey stuff it is algae.  Better here than in your filters. 

Try to get to a safe place. Remove the screen pre-filter carefully and keeping the hoses tied up high to minimize spills. Empty any fuel from the screen filter and dispose of it properly. Wash the filter in soapy water until it is clean, the screen does not come out but the flakes inside will.  Rinse it well and shake put any water. Put your finger over one end and pour in some alcohol at the other end. Shake it around and dump that out.  It will dry fairly quickly, the alcohol gets wit of any water.  Reinstall it taking care with the end o-rings. A bit of left over fuel as a lube will help. It is a snug fit, let the thumb screw finish it up.  Use the air purge button on the box at the top of the engine bay opening. Push it, it runs for a minute or more. Do it 2 or three times.  Then start the engine, run on high idle for 3 minutes as I recall what the instructions say. 

This pre-filter catches most of the gunk.  You can see it as it collects. At some point in the near future When you are in a safe place change the other two filters as well.  Carry a couple of each of this as well.

This is something you can do yourself and may have to at some inopportune time in not the best of locations.  Someday when you are in a safe place with tools at hand do it as practice.  When you have to do it, it won't be the first time.

There are replacements for the whole setup.  Some have had issues with leaks, mostly o-ring problems I suspect.  I installed this one after we got the coach about 9 years ago.  It has never leaked a drop and has worked at minus 30 degrees.  I like being able to see the filter.  My choice.

Re: U320 fuel screen

Reply #8 –
I know that some here disagree with me, but I believe it's wise to replace the old Winn system with with a modern system such as the Parker Racor 790R30. https://ph.parker.com/us/en/spin-on-filter-pump-systems/790r30-12v-dc-pump

The original Winn system in our 1995 U320 developed air leaks when in temperatures below roughly 40 degrees preventing engine starting and I was never able to correct the issue. Replacement with the newer system was straightforward and solved my problems. I'm no longer concerned about being stranded as I was with the Winn system. An added bonus is that filter replacement is more straightforward with the 790R30 system. 
David and Carolyn Osborn
1995 U320C SE 40' Build 4726 Feb 1995
FMCA 147762
Motorcade 17186

Re: U320 fuel screen

Reply #9 –
Quote from: D.J. Osborn –
The original Winn system in our 1995 U320 developed air leaks when in temperatures below roughly 40 degrees preventing engine starting and I was never able to correct the issue.
I had the same problem. It's the "O" rings on either end of the strainer. I like the idea of a strainer, upstream of the primary filter, it stops all the big stuff before it hits a filter and provides a visual indicator of a problem.

Tim
Tim Dianics
Pam Sapienza
Vader PupZilla Labrador Canine (AKA Pup)
Columbia, MO
1996 U320 4000

Re: U320 fuel screen

Reply #10 –
Realized I never posted o-ring part numbers.
Scott


Item ID:  O-ring AS568-114
AS568-114 - O-ring



Standard Dash Size AS568 -114 B70 (NBR) Buna O-rings 50 Count Orings Bulk | eBay

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Item ID:  O-ring AS568-208
AS568-208 - O-ring
EAI AS568 O'RING Seal #208 (20PCS) ID 5/8" CS 1/8" NBR Oring 5/8"x7/8"x1...[/url
Scott and Kim Davidson
If you're going to be dumb, you got to be tough.
DEGOIWKY
Don't ever get old, it will kill you
June 30, 2020
2001 U320 3610 Barn find
Build 5834