Often Missed Maintenance Item - Fuel Pump Filter

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Feb 6, 1998
11,760
Canadian Sailcraft 36T Casco Bay, ME
Changing The Internal Filter in A Facet Interrupter/Gold-Flo Fuel Pump

This is a Facet "Interrupter" or Gold-Flo fuel pump. They are found on many vessels especially those that shipped with Westerbeke or Universal engines.

The Facet "round" pumps are reliable, this one is over 27 years old, but many owners miss a key maintenance item, the pumps internal filter.



Open The Base
To access the pumps internal filter a 7/8" wrench is used. The pumps base twists off in a counter clock wise rotation.




Base Off
In this photo you can see the sealing gasket, still in the base, and the filter still in the pump housing.





The Gasket Is Usually The Weak Link
As you can see this gasket should have been replaced long ago. Owners who do know about these filters often assume that because most of these pumps were installed after the primary fuel filter that changing the internal filter is not necessary.

This pump leaked due to a failed gasket and made a mess of the boat it had been in. It was also badly rusted and as such a decision was made to install a new one due to age and condition.

I cleaned it and painted it and now use it as a portable fuel transfer pump. If it fails I will know about it and it won't fill an owners bilge with fuel...




Clean The Base
Here's the base with the gasket removed. Clean all the "varnish" and sludge out and get the surface as smooth as can be. This picture is after I wiped it out but before I cleaned with the some wet sand paper..



The Filter
With the base removed the filter will come out with some wiggling.

This was actually the end that faced the gasket and we can see evidence of water infiltration. The previous pictures show the filter inserted for illustrative purposes only and it was upside down from the way it actually came out. Despite being down stream from a Racor primary fuel filter the pump still had some water in it. This was likely due to a failed 0-ring on the boats fuel fill.

Facet no longer uses metal/paper filters in these pumps, this one was 27 years old, and they are now just a simple 74 micron screen.



Top Of Filter
The top of the filter shows no water damage and no rusting.



Filter Not Too Bad
For 27 Years of use the filter is not too bad. This means the Racor, that was down stream, did a decent job of protecting it. This is a very large particle capture rate at 74 micron so you would not expect it to be too bad as the primary filter should be getting most of it.

If it had been located on the fuel tank side of the primary filter it would likely look considerably worse.

As I mentioned it is often the gasket the is the weak link.



The Check Valve
Many of these pumps use a check valve to prevent drain back if the pump is located higher than the tank..

Don't forget to clean the inside of the pump too..



The Filter & Gasket Kit
Here's an insider tip. You DO NOT need to pay $50.00+ dollars for this filter and gasket from a "marine" supplier.

NAPA sells this Facet filter and gasket kit, under their own part number, as a 610-1086, as seen, for under $10.00. Cheap insurance.



Coat The Gasket
Before installing the gasket coat it lightly with some motor oil on both sides so that it closes nicely without "binding" between the base and pump body.



Insert The Filter
Slide the new filter into the housing as shown. The new filters are asymmetrical and the small hole end faces AWAY from the gasket.



Re-Install The Base
Once the gasket is coated and the filter in place simply re-install the base in the opposite manner you removed it..

You should be done in under 10 minutes, even with poor access... Easy!!!!
 

MSter

.
Apr 12, 2010
131
Sabre 38' MK II Oriental, NC
Main,
On our new to us 1988 Sabre with Westerbeke 33A engine the fuel pump has a ground wire on the bottom of the housing were you show the 7/8 hex. I had a devil of a time getting the cap off. I suspect it had never been removed as the red paint was not scarred or damaged. I found the filter pleats completely filled with black / gray junk with the consistency of toothpaste. We had started to find the engine getting fuel starved and started looking for reasons. I had changed the Racor and smaller secondary filter earlier but not the fuel pump as it was so difficult to remove. Is there an easier way to remove with this ground wire ?
Thanks for your input.
Regards MSter
 

RichH

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Feb 14, 2005
4,773
Tayana 37 cutter; I20/M20 SCOWS Worton Creek, MD
Good discussion, Maine!

Actually and especially if the pump is 'before' the system filters your really should consider to apply a 75-100µM 'strainer' before the pump. This would apply to applications where you use a LOT of fuel yearly. The function of the 'upstream' strainer or integral pump strainer is to protect the pump valves.
 
Feb 6, 1998
11,760
Canadian Sailcraft 36T Casco Bay, ME
Good discussion, Maine!

Actually and especially if the pump is 'before' the system filters your really should consider to apply a 75-100µM 'strainer' before the pump. This would apply to applications where you use a LOT of fuel yearly. The function of the 'upstream' strainer or integral pump strainer is to protect the pump valves.
Installing a per-strainer if the pump is on the tank side of the primary filter is a MUCH easier task than changing the internal Facet filters. The "cube" style facets use an external "threaded on" filter...

Still, one can't completely ignore these as the gaskets can eventually fail. I've also seen "growth colonies" inside the Facet even down stream of the primary filter, especially when the primary is a 30 micron... With 10 micron I rarely see any plugging of the Facet 74 mic screen...

How do these "growth colonies" get past a 30 mic filter????
 

RichH

.
Feb 14, 2005
4,773
Tayana 37 cutter; I20/M20 SCOWS Worton Creek, MD
Easy! The fungal, etc. spores that cause/'seed' all this 'mess' can be in the size range of 3-5µM. Plus most of the common 'biologicals' that thrive in diesel, etc. oil are soft and deformable and can be 'extruded' through such large retention filters as are used in fuel systems ... thats where LARGE surface area filters become important ... less psi across the filter media; hence, less potential of 'extrusion'. Many fungals will regenerate from small/broken 'filaments'.

Thats why a high capacity / high 'turnover' recirculation-polisher on the tank contents is important ... constantly removes the 'spores' and 'agglomerating' (sticking together) of smaller particles into progressively larger and larger particles ... removes these 'growing' particles before they get to the distribution system.
 
Feb 6, 1998
11,760
Canadian Sailcraft 36T Casco Bay, ME
Thats why a high capacity / high 'turnover' recirculation-polisher on the tank contents is important ... constantly removes the 'spores' and 'agglomerating' (sticking together) of smaller particles into progressively larger and larger particles ... removes these 'growing' particles before they get to the distribution system.

That's what I have now...:) 72GPH pump, dedicated supply & return to the tank that filters down to 2 micron. I would probably use a 10 mic or more but it is still turning the tank at nearly twice per hour.. So far have not seen any signs of crud, growth or anything but beautiful red clean fuel. In three years I have not captured anything visible in my Racor 500 primary or my engines 15-17 micron secondary filter.
 
Apr 8, 2010
2,238
Ericson Yachts Olson 34 28400 Portland OR
Main,
On our new to us 1988 Sabre with Westerbeke 33A engine the fuel pump has a ground wire on the bottom of the housing were you show the 7/8 hex. I had a devil of a time getting the cap off. I suspect it had never been removed as the red paint was not scarred or damaged. I found the filter pleats completely filled with black / gray junk with the consistency of toothpaste. We had started to find the engine getting fuel starved and started looking for reasons. I had changed the Racor and smaller secondary filter earlier but not the fuel pump as it was so difficult to remove. Is there an easier way to remove with this ground wire ?
Thanks for your input.
Regards MSter
Here's a photo of the Facet pump installation for our M25XP. Notice the Neg ("ground") wire to a mounting tab.
Also, some might find this thread interesting concerning a voltage dropout problem I found and fixed.
http://www.ericsonyachts.org/infoex...tric-Fuel-Pump-trouble-shooting&referrerid=28

LB
 

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Oct 3, 2008
325
Beneteau 393 Chesapeake Bay
That's what I have now...:) 72GPH pump, dedicated supply & return to the tank that filters down to 2 micron. I would probably use a 10 mic or more but it is still turning the tank at nearly twice per hour.. So far have not seen any signs of crud, growth or anything but beautiful red clean fuel. In three years I have not captured anything visible in my Racor 500 primary or my engines 15-17 micron secondary filter.
I am looking for a fuel pump for a similar setup. Which one do you have?
 
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