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flywheel to hub alignment
Hi, basic question here. Does the 0 on the flywheel match to the (smeared) 0 on the hub?
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Yes it does.
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Thanks! Kind of makes sense but I'm not an A or P (yet) :D
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Aren't the some of the holes and studs different sizes also for proper fit / alignment? For some reason I have it in the back of my head they were.
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Some props have different recesses for the prop flange, but the ring gear will fit any way.
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Looking at the Lycoming SI for the bushings the index bushing fits a hole in the crank that is about .031" larger than the other 5. http://www.yeeles.com/Lycoming_Refer...ns/SI1098G.pdf I know that on both of my O-360's ( -A4K and -A1A) the flywheel will only fit when the "O" marks line up. |
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Larry |
I did a condition inspection on a 6-A that had the flywheel mounted one hole off (with constant speed). Rather than pull it off and mount it right, whoever did it just used a felt tip pen to place new timing marks.....ya sure do find a lot of strange things.:rolleyes:
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The hole in the crank flange is 0.031 larger diameter. The non-index bushing would not be a friction fit. See link in post #8. However, with a big enough hammer I'm sure someone could make the flywheel fit in any orientation. :D |
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Larry |
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