Hi All,
my 7 has now 35 hours on it and it seems my mechanical fuel pump (Tempest AF 15473) fails. the transparent nylon tube at the overflow outlet showed blue avgas-colour from the beginning. i wasn't aware that this is a problem until lately. i understand now there's only fuel at the overflow when the lower diaphragm leaks. well, the entire project took much longer than expected so the pump was sitting dry for ten years, maybe that caused the problem. i do have some questions...
1. i assume that this failure is very critical, although i have a electrical boost pump. would you ground the aircraft for now?
2. do i have to replace the whole thing or is there a solution by just to replace the diaphragms? i don't know if the diaphragms are supposed to be replaceable. el cheapo as i am it would be nice if that's possible.
at 20 hours my skyview went down the drain and now that. phase 1 doesn't run extremly smooth i would say.
any help is very appreciated.
Cheers
Kay
my 7 has now 35 hours on it and it seems my mechanical fuel pump (Tempest AF 15473) fails. the transparent nylon tube at the overflow outlet showed blue avgas-colour from the beginning. i wasn't aware that this is a problem until lately. i understand now there's only fuel at the overflow when the lower diaphragm leaks. well, the entire project took much longer than expected so the pump was sitting dry for ten years, maybe that caused the problem. i do have some questions...
1. i assume that this failure is very critical, although i have a electrical boost pump. would you ground the aircraft for now?
2. do i have to replace the whole thing or is there a solution by just to replace the diaphragms? i don't know if the diaphragms are supposed to be replaceable. el cheapo as i am it would be nice if that's possible.
at 20 hours my skyview went down the drain and now that. phase 1 doesn't run extremly smooth i would say.
any help is very appreciated.
Cheers
Kay