Subject: RE: NON-GUZZI TRANNY OIL PLUG
Author: stephen brenton
Date: Nov 30, 2001, 6:08 AM
Post ID: 1709032851
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 |