Topica Loopframe_Guzzi Archive


Subject: Re: My transmission

Author: Greg Field

Date: May 17, 2005, 9:43 AM

Post ID: 1718879775



On the left sode of the tranny, there'll be what looks like a big bolt
head with a hole in the middle or a bolt head with a hose nipple. Under
that is a spring that loads a plunger that indexes with notches in the
shift drum when you shift gears.

Pull the bolt head thing and spring and pull out the plunger with a
small screwdriver or whatever works.

It will have a semicircular shape to its tip. File or grind the tip to
a flatter profile (or pay $60 for the updated plunger). This makes it
so that it doesn't stick as deeply into the notches in the shift drum.
This reduces shifting effort.

I know nothing about the shift offset brackets, so someone else will
have to answer that one.

GF

On Tuesday, May 17, 2005, at 07:38 AM, Ted Ward wrote:

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Thanks Greg, I was thinking an air powered rattle gun would work, but
wasn't
sure if there would be enough resistance.
What exactly is a detent plunger? (if its in the manual I'll look it
up when
I get home)
And, as Greg B. pointed out I already removed my offset shift
adjuster, is
there a way to reinsert it and adjust it without opening the
transmission?

Ted

----- Original Message -----
From: "Greg Field" <gre-@gregfield.com>
To: <Loopfram-@topica.com>

The best way to remove that nut is with a 27mm deep, thinwall socket
and a rattle gun, either air or electric. Electric ones can be gotten
from Harbor Freight for about $30 on sale. With a rattle gun, you do
not need to hold the input.

For some reason, a lot of these 5-speeds have been grenading in Seattle
lately, so I've been getting lots of experience at this.

As for shimming, it works but is not worth a teardown just for it. More
effective and simpler is to pull out the detent plunger and flatten the
profile of the tip.

GF

 I thought about holding the transmission input gear, but was afraid
that
would hurt the internals. I guess they must be pretty tough to drive
the
bike in the first place.
I guess you made the decision for me. That was the offset shift
adjuster
(though it has a bolt top not a screwdriver tip). Does Pete's article
detail
how to reinstall that item?
I guess I was a little daunted by the 9 pages of instructions on how
to shim
the transmission. After looking it over I realized Pete goes into a
lot of
detail.

Ted Ward

----- Original Message -----
From: "Greg Bender" <gr-@thisoldtractor.com>

Hi Ted,

Here are my thoughts:
...

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