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Topic: Re: 1999 M11 Fuel/Water Separator Help (Read 624 times) previous topic - next topic - Topic derived from Re: 2001 U320 brake l...

Re: 1999 M11 Fuel/Water Separator Help

Could someone please school me on what I have to do to swap out the new fuel/water Separator filter? This will be the first time I physically am doing it myself. Last year MOT did it. I assume I will have to undo the bottom fitting and electrical plug then spin off??  What about the plastic cylinder next to it? Is there some type of maintenance required for this also? What is it and what function does it do?

Re: 1999 M11 Fuel/Water Separator Help

Reply #1 –
Yes you just spin off the the bottom part and the filter. The plastic cylinder is a precleaner before the filter with a screen inside it.
If it is clean I don't do anything and if it is dirty it needs to be taken apart and cleaned. In my last coach I took it apart and clean
it and I remember it was tricky to get apart. Maybe someone will tell you how to get at it.

Re: Re: 1999 M11 Fuel/Water Separator Help

Reply #2 –
Thumb screw on top of the screen housing releases the screen. No need to remove if there is no junk visually in it. If you press the purge button the fuel running in will move any junk around. There are four o-rings of two sizes. Two of each top and bottom. I just purchased 50 each and will post numbers Below. Like 12 cents each and 15$ shipping. If you remove you can clean with soap and water. Just thoroughly dry before you install.
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...

Re: Re: 1999 M11 Fuel/Water Separator Help

Reply #3 –
Ok, thank u