I have never changed a Racor Spin on fuel filter. There are three screw like things on top. One is metal, is that the bleeder valve? One is plastic that is a thumb and finger twist type and the third is a slotted screw type. What are they? If I drain the filter, will the fuel stop or do I need to turn off the fuel at the tank? Thanks. Paul
Racor Spin ON filter
- Thread starter Paul (Affinity C320)
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Racor filter
Turn the valve closed at the tank to prevent a loss of fuel while replacing the filter (and air will enter the line). Remember to open the valve after filter replacement, but before bleeding the fuel line and filter. A Pampers diaper placed under the filter will help to absorb any fuel spills. It does help when you "prefill" the new filter with fuel, with the bottom plastic cup attached, prior to screwing the filter on. Less pumping to do. I keep a small 1 gallon jug of diesel around just for prefilling the filter. The "slotted screw" sounds like the bleed hole. Loosen this prior to pumping air out of the filter (next). Remember to close this when you're done pumping and ready to continue bleeding the fuel lines. The "thumb and finger twist type" sounds like the bleed pump. When you twist this one, it will loosen a plunger that is used to "pump" fuel into the filter while air escapes out of the opening you made by loosening the slotted screw. You slowly pump until air no longer bubbles out of the opening and fuel beging to gush out while you pump. Prefilling the filter with fuel prior to attaching it will help to lessen the amount of pumping you have to do at this step. After you're sure the air is out, hand tighten the pump plunger closed, and tighen the slotted screw. Then you bleed the engine. The other opening on the top of the filter is probably for attaching a vacuum gauge. You can install a vacuum gauge in the top that help indicate when it's time to replace the filter.
Turn the valve closed at the tank to prevent a loss of fuel while replacing the filter (and air will enter the line). Remember to open the valve after filter replacement, but before bleeding the fuel line and filter. A Pampers diaper placed under the filter will help to absorb any fuel spills. It does help when you "prefill" the new filter with fuel, with the bottom plastic cup attached, prior to screwing the filter on. Less pumping to do. I keep a small 1 gallon jug of diesel around just for prefilling the filter. The "slotted screw" sounds like the bleed hole. Loosen this prior to pumping air out of the filter (next). Remember to close this when you're done pumping and ready to continue bleeding the fuel lines. The "thumb and finger twist type" sounds like the bleed pump. When you twist this one, it will loosen a plunger that is used to "pump" fuel into the filter while air escapes out of the opening you made by loosening the slotted screw. You slowly pump until air no longer bubbles out of the opening and fuel beging to gush out while you pump. Prefilling the filter with fuel prior to attaching it will help to lessen the amount of pumping you have to do at this step. After you're sure the air is out, hand tighten the pump plunger closed, and tighen the slotted screw. Then you bleed the engine. The other opening on the top of the filter is probably for attaching a vacuum gauge. You can install a vacuum gauge in the top that help indicate when it's time to replace the filter.
Fuel Filter
Paul Tom's right. There's a bit of a shortcut: don't bother with the hand (finger) pump on the filter housing. If you have an electric fuel pump, let that do the work. Much easier. Otherwise, everything was described very well. Also, a good idea to put the date of the change on filter body so you'll easily know when to replace ti again, or at least when you last did it! Stu
Paul Tom's right. There's a bit of a shortcut: don't bother with the hand (finger) pump on the filter housing. If you have an electric fuel pump, let that do the work. Much easier. Otherwise, everything was described very well. Also, a good idea to put the date of the change on filter body so you'll easily know when to replace ti again, or at least when you last did it! Stu
Racor
Thanks, that is what I needed. I did find that the slotted screw is a check valve -- this so the fuel isn't pumped back out of the filter. So, tomorrow I'll be changing that puppy. Paul
Thanks, that is what I needed. I did find that the slotted screw is a check valve -- this so the fuel isn't pumped back out of the filter. So, tomorrow I'll be changing that puppy. Paul
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