Zenith Aircraft Builders and Flyers
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15 hour maint checklist
UL 350 iS Herman advised me to check all six head bolts on each cylinder ; turned out to be good advice !! fuel pressure is a little higher with both pumps running at same time ; the banjo fittings on the fuel pumps seeped at the higher pressure ( both pumps on ) any body else dislike the banjo fittings ?
Replies to This Discussion
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Permalink Reply by Jim MacWilliams
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Craig, is there more to this story? Why did Herman advise checking the six head bolts? I just checked ULPower service bulletins and there is no such advice there. Were you having some issue?
WRT the banjo fittings on the fuel pumps, I have not had any problems with them, but I did just replace the hoses feeding the fuel pumps - they were overdue for replacement.
What kind of fuel pressures are you reading?
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Herman did not state a specific reason , I was already thinking that if it was important to check the torque on the four easy to get to head bolts then they all needed checked , therefore his encouragement sealed the deal . Fuel pressure in flight 51 psi ? in the middle of the green bar on Dynon as prescribed by UL Power
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