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aadamson(at)highrf.com
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 Posted: Thu Aug 07, 2008 3:59 pm Post subject: SD-20 repairable? |
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I had a secondary buss failure in the last couple of day. Tracked it back to the alternator and SD-20. After some simple debugging, I decided to see if I could see anything move inside it when I turned the engine over by hand. While the ratio is pretty small, I could detect no movement. Further I found that the cooling fins that I could see where moveable with a simple small pointy tool inserted in the back of the unit while it was still attached to the engine.
Long story short, after removal, I found that the input spline shaft was intact (all of it's teeth there), but it freely spins and it's obvious that it's not attached to the central armature of the SD-20 any longer.
Are these things serviceable? I called B&C, but no tech people until Monday due to travel back from OSH.
Thot I'd ask here?
Thanks in advance,
Alan Adamson
Atlanta, Ga
[quote][b]
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nuckolls.bob(at)cox.net
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| Posted: Fri Aug 08, 2008 9:41 am Post subject: SD-20 repairable? |
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At 07:55 PM 8/7/2008 -0400, you wrote:
| Quote: | I had a secondary buss failure in the last couple of day. Tracked it back
to the alternator and SD-20. After some simple debugging, I decided to
see if I could see anything move inside it when I turned the engine over
by hand. While the ratio is pretty small, I could detect no
movement. Further I found that the cooling fins that I could see where
moveable with a simple small pointy tool inserted in the back of the unit
while it was still attached to the engine.
Long story short, after removal, I found that the input spline shaft was
intact (all of it's teeth there), but it freely spins and it's obvious
that it's not attached to the central armature of the SD-20 any longer.
Are these things serviceable? I called B&C, but no tech people until
Monday due to travel back from OSH.
|
It sounds like the shear section on your spline shaft
has opened up. Yes, that's imminently repairable.
Bob . . .
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