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> 'Nuther Q - Just pulled the front fan hub from the crank
Gint
post Apr 29 2008, 06:28 PM
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Mike Ginter
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What's to prevent oil from leaking from the back side of the hub through the bolt hole?
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Cap'n Krusty
post Apr 29 2008, 07:54 PM
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It's a precision taper fit, and damn tight, once the bolt is torqued to a mere 18 ft/lbs. The o-ring behind the hub seals the joint between the crank and the hub, the radial seal between the hub and the case. if your hub was loose, I'd REALLY carefully inspect the surfaces of both the crankshaft and the hub. use a bright light and magnification if necessary. Also look at the key and the keway in the crankshaft. Perfection is a must here, anything less can cause the hub and crank to separate during operation, and that's something you REALLY don't want to happen.

The Cap'n
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turtleturtle
post May 2 2008, 07:01 AM
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QUOTE(Cap'n Krusty @ Apr 29 2008, 07:54 PM) *

if your hub was loose, I'd REALLY carefully inspect the surfaces of both the crankshaft and the hub. use a bright light and magnification if necessary. Also look at the key and the keway in the crankshaft. Perfection is a must here, anything less can cause the hub and crank to separate during operation, and that's something you REALLY don't want to happen.

The Cap'n


Yeah, make sure the hub is not damaged at all, because if it is, your wood drift key will never last.
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Posts in this topic
Gint   'Nuther Q - Just pulled the front fan hub from the crank   Apr 29 2008, 06:28 PM
type47   ? the bolt hole on the tip of the nose of the cran...   Apr 29 2008, 06:46 PM
SLITS   Whaaaaaaaaat? 3 fastners hold the fan to the hub....   Apr 29 2008, 06:54 PM
ejm   O ring #4   Apr 29 2008, 07:10 PM
SLITS   While the hub on the crank is not an interference ...   Apr 29 2008, 07:10 PM
Gint   Ed, I believe that oil ring #4 is actually the fr...   Apr 29 2008, 07:41 PM
Cap'n Krusty   It's a precision taper fit, and damn tight, on...   Apr 29 2008, 07:54 PM
turtleturtle   if your hub was loose, I'd REALLY carefully i...   May 2 2008, 07:01 AM
Cap'n Krusty   [quote name='Cap'n Krusty' post='1026331' dat...   May 2 2008, 09:55 AM
ejm   :agree: seal is #13   Apr 29 2008, 09:00 PM
Gint   I'll be damned. Good thing I asked. Thanks...   Apr 29 2008, 09:27 PM
Cap'n Krusty   Odd size, and size is critical. Remind me in the ...   Apr 29 2008, 09:30 PM
Gint   That'd be great John. Would it be the same as...   Apr 29 2008, 09:33 PM
ejm   Pelican lists it right below the fan with the same...   Apr 29 2008, 09:39 PM
brer   18 ft/lbs? I coulda sworn the factory manual said...   Apr 30 2008, 11:33 AM
Cap'n Krusty   What do I know, I put it on with air ................   Apr 30 2008, 02:01 PM
Racer Chris   I'm sure I have a few in my box of engine gask...   Apr 30 2008, 04:16 PM
Gint   Whatever.... Pelican says "not available anyw...   Apr 30 2008, 05:34 PM
Demick   I suspect an oil leak from behind the fan. Anyone...   May 1 2008, 08:41 PM
Gint   My motor is on the floor and 30 minutes ago I just...   May 1 2008, 10:39 PM


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