Flush them in accordance with Service Bulletin #60 and you should be good.
Flush them in accordance with Service Bulletin #60 and you should be good.
paul , maybe youve seen this picture already but this is what i got out of the tank doing the three rinses . the tank wasnt installed yet so it wasnt too bad . if i had to do it on the airplane , id probably remove the finger filter and install a barbed fitting with a hose . this crap would never get past the filter . i havent had a chance to play with the acetone i did the rinse with yet but it smells like resin . good luck .
chuck
kitfox IV 1050
912ul warpdrive
flying B , yelm, wa
I hate to be dumb but what is a finger filter? The fuel filter?
I purchase a sump fuel tank drain fiting from Aircraft spruce, I plan on installing it on the header tank. It will allow me to use a hose, and lock the sump drain open so I can drain the tank without worring about getting the acetone on the paint.
Paul Zimmermann
LSRM-A
Garland, Texas
Ahhhh Finger strainers, aka tank filters! Good Idea, when I replace the hose for the sight gage, I will pull them!
Paul Zimmermann
LSRM-A
Garland, Texas
yes , the tank filter/strainer . course screen , keeps the big chunks from leaving the tank and going down the fuel hose .
chuck
kitfox IV 1050
912ul warpdrive
flying B , yelm, wa
Well, I have replaced the Header tank, I have gotten a new fuel filter in from Summit Racing, 703KA had a Earls' 25 micron filter so am replacing it with the same. I had a little bit of a Fuel leak.
Picture #1 - Oops a little Fuel Leaking, my better half was complaining about the smell of fuel! I wonder why??
Picture #2 - The two fitting that were causing the leak, as installed.
Picture #3 - I Replaced fitting and got rid of one pipe thread reducer (the Blue pipe thread fitting)
Picture #4 - Added a back flow valve, per John McBean, to prevent fuel from flowing back up to engine in case of Fire!
Picture #5 - Earl's Fuel Filter, I took the old one out, after cleaning and reinstalling it, because it did not have a Flow direction indicator on it, so I ordered a new one! I will replace it next!
Next up is to put some fuel in the header tank to assure it doesn't leak!
Hopefully over the Christmas Holidays, I can finish the tanks and fuel lines up so I can flush the tanks. All, just in time to get it's annual done. I need to talk to Steve Quiones my A&P about doing the Annual!! I also need to do my BFR Flight Review!
Paul Zimmermann
LSRM-A
Garland, Texas
Just to add more to the conversation - I recently received a new set of tanks for my model 4. I did the rinse last week and got a lot of those flakes as well. I think the flakes are resin(uncured) that dropped down during the joining process and fell onto a previously cured part(like the baffles) that had mold release on it. The acetone rinse then removed the mold release and worked its way under the newly cured drops of resin and lifted them as flakes. After all of my rinses i filled my tanks with water several times and released the water quickly and the flakes flushed through. What got stuck in the drain holes I just pulled through with tweezers.
Just a theory.