1955KH wrote:Hello Dave,
Parts books do not show the fine points, in this case that the Oil Separator Bush is a 2-part item, the inner flanged brass bit is held into the outer bush by two tabs bent into slots in the outer but allowing it to slide. The spring sits on the other 4 tabs and presses the flange against the drilled generator drive gear, and with negative crankcase pressure stops any flow in the breather tube. With positive pressure the flanged bush lifts off and venting takes place.
Michael.
Michael,
You guys down there in the Antipodes really know your stuff! The piece you describe would certainly give the spring a reason for being. And the whole setup then makes sense! I just popped the generator off my 54 KH, and I now see how it looks. Duh, perhaps I should have done that before.
Here are the photos you sent me via email - maybe they'll help others. Also, I found the Seal ring, oil deflector is sold separately as 25270-52
http://www.nosparts.nl has them.
HOWEVER, this setup is designed for generator gears with the oil singer. My understanding is that 1958-1962 generators used a plain 13 tooth gear - no slinger. So the Seal ring would have nothing to ride against. One person told me that the seal ring and spring were just not used on these years. I'm starting to suspect this might be the case, although it leaves the breather area wide open.
My understanding is that in 1963, the gear case cover changed, and the generator used a plain 14 tooth gear with a large washer - and a different "Deflector, oil separator". The large washer would give a place for the spring loaded seal ring to ride against. I can't see (from the parts book) that any of the gears changed in 63 except the generator gear and washer, so maybe the generator area is the only difference between the 57-62 and 63-up gear case covers. ???
This just keeps getting murkier and murkier!
Dave
P.S. Does anyone have a parts book from the 1958 to 1962 era? It would be interesting to see the gearcase and generator sections.