Topica Loopframe_Guzzi Archive


Subject: Re: NON-GUZZI TRANNY OIL PLUG

Author: Robert Hawkes

Date: Nov 30, 2001, 6:30 PM

Post ID: 1709039279


Stephen,
Thanks for all the information. I may take you up on your offer but I may
try a self-tapping "Piggy-Back Plug" I saw last night at a local auto store
as one of the guys on the list mentioned it as pretty good. Thanks again.
Bob Hawkes
----- Original Message -----
From: stephen brenton <sbre-@williamstech.com>
To: <Loopfram-@topica.com>
Sent: Friday, November 30, 2001 9:08 AM
Subject: RE: NON-GUZZI TRANNY OIL PLUG


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Bob,
I agree with Ian.
I had such a plug in the 77 BMW trans when I bought it 2 years ago. It
held up fine but I did repair the stripped hole as soon as I found time.
I work in a transmission remanufacturing factory, we do >12,000
automatic transmissions a month. We see lots of stripped holes in
Aluminum cases. Typically for fluid boundary joints (like a drain plug)
we will TIG weld the hole closed, drill and re-tap to the original
threads. (This is a nice service to have available when you only own
older bikes.)
I have noticed the drain plug and the level plugs on my Eldo have very
little thread length (maybe 3-4 threads). When you add a thick fiber
washer even fewer threads are engaged. This doesn't seem adequate and
can lead to stripped threads in the Alum cases. As an alternative I
"found" an plug that we use which has long enough threads to engage all
the thread in the case AND it has a magnet built-in. It is the same
thread size (10mm x 1.75) so it fits in both the drain and the level
plug locations. Let me know off-line if you want one.
stephen.

Ian Adkins wrote:
 Bob,
Best to get the plug hole fixed properly...in my opinion. I would tap to
a larger size...same pitch if possible.

Regards...Ian

I need sage advice. As some of you remember I the tranny oil plug
on my
 
 Ambo stripped when I changed the oil this past weekend. Went to the
auto parts store and bought a rubber/metal replacement drain plug.
This
 
 thing shoves into the drain hole and then one just turns an adjuster
underneath it which pulls a metal rod down through the rubber plug
and
 
 the thing grips the hell out of the drain hole. Opinions on this
are
 
 welcome. It sure beats rethreading. But does it work? Thanks.
Bob Hawkes

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