Topica Loopframe_Guzzi Archive


Subject: Re: Guzziology on Rear Drive Oil Migration

Author: John Chicoine

Date: Jun 1, 2005, 2:00 PM

Post ID: 1718958046



Hi Keith:

I just pulled a three apart this past weekend and it took a little doing.

Basically I used a utility knife and gently, but firmly hammered the blade
between the steel pinion housing and the aluminum drive housing, working
around its outside, to break the gasket. Once the gap opened up I carefully
worked it out further with a flat screw driver, then something thicker like
the end of a wrench.

The key is to NOT damage the aluminum face by forcing something. Take your
time. One came free right away. Another took prying all the way past the
studs. Work evenly from side to side on all 4 sides.

John C.


----- Original Message -----
From: "Keith Ruff" <klru-@comcast.net>
To: <Loopfram-@topica.com>
Sent: Wednesday, June 01, 2005 3:39 PM
Subject: RE: Guzziology on Rear Drive Oil Migration


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The more I think of it, perhaps I can just pull the rear wheel and drive
and check to see if the flat spots are aligned. If not, I can realign
and close it all back up after putting all new gaskets in. Perhaps this
will stop the mass migration and I may not have to pull the swingarm to
change the new split boot to the OEM style.

How do I "pull the end of the drive shaft out" after the rear drive is
off? Just it just slide out or does something else have to be removed
to free it up?

Keith Ruff
70 Cafe Racer Ambo
Manahawkin, NJ

Paul P. Linn wrote:
 
Keith,

When you remove the rear drive to replace the two gaskets and the
o-ring,
you will need to pull the end of the drive shaft out. On this piece you
will
see the two flat spots and if you look into the hole on the casing, you
will
see where they need to line up. I have a drive that's apart right now so
I
will take some pictures of this for you. Might be a good idea for Greg
Bender to post them on his site also.

Paul

-----Original Message-----
From: Keith Ruff [mailto:klru-@comcast.net]
Sent: Tuesday, May 31, 2005 11:26 PM
To: Loopfram-@topica.com
Subject: Guzziology on Rear Drive Oil Migration


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Was just reading Guzziology and stumbled upon something interesting
about oil migration. Book reads as follows:

"I have 2 clues as to the cause of the problem. One involves the
carrier for the pinion bearings, which on all but the earliest big twins

has little flat spots on the circumference that are supposed to align
with the slots in the rear-drive casting. If you look for them they are

quite apparent. Their purpose is to route lubricant forward to the
pinion bearings then back to the rear drive....

I have once been handed just the rear drive from a bike that was
experiencing fluid migration just since that rear drive had been
installed by the customer. I found that the pinion carrier was
installed incorrectly-the little slots weren't in alignment. After that

problem was rectified the bike suffered no further problems with
lubricant migration."

Now, I'm not sure what all of this stuff is as I have never been inside
the swing arm/rear drive, but I wonder if that is what the problem is
with my Ambo? The previous owner removed all of the rear drive sidecar
gearing and re-installed the original gears. Perhaps he did not align
these slots on the pinion carrier?

Keith Ruff
70 Cafe Racer Ambo
Manahawkin, NJ

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lifestyle news you can't afford to miss, all at a price you can afford
to
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