Topica Loopframe_Guzzi Archive


Subject: RE: Eldo Project started - Tranny reshimming - help with input shaft

Author: Greg Bender

Date: Feb 21, 2005, 4:40 PM

Post ID: 1718431173



Hi Tom,

I can't help you with the shift forks, but as for the hardened washer, I
think the only thing really special about it is that it isn't available
seperately from Moto Guzzi. I'd run down to your local hardware store
and find a washer with the right ID and the grind/file it to the right
OD. You might even find a stainless steel one that will be a bit harder
than regular washers. Then, just pop it in and forget about it. If you
really want to have fun, right down the odometer reading and then check
the washer again every 10,000 miles or so. Concours, no. But I bet it'll
run a long, long, long time that way.

Tom Christian wrote:
 
Went to reshim the drum this evening and took a closer
look at the shift forks - at least one of them is toast -
a very nice deep arc groove machined into it by the clutch
dogs. One other similar but not as bad. I'm also missing
the hardened washer underneath the speedo drive.

Does anyone have a source for used shift forks (new
they're $160.00 from MG!) and perhaps a hardened washer
laying around they'd part with? Mark?

Thanks -tom.

On Mon, 21 Feb 2005 13:16:59 -0500
tom christian <tchri-@gmpexpress.net> wrote:
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I have the old nut, it was staked, but difficult to tell
how well oringnally as it did unwind as it chewed
through, raising the "stake" up.

On Mon, 21 Feb 2005 18:10:41 +0000
Greg Bender <gr-@thisoldtractor.com> wrote:
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Hi Tom,

I suppose that is one possibility. Looking at the nut,
were you able to
see where it was staked? I would think that a lack of
staking - or a
failed staking - would be the most likely culprit.

Tom Christian wrote:
 
Thanks for the hints guys - put it up on blocks, a good
whap or 3 and it was out. Just too chicken to hit it
hard
enough the first time.

Interesting find though in the disassembly, the rear
cover
had been put on with no gasket, and the rear layshaft
nut
came off pretty easily, as did the Clutch Boss nut.

Everything I've read says shim w/o the gasket, then add
the gasket on final assembly as this allows for heat
expansion. Could this have been the cause of the
original
issue with the layshaft retainer nut - heat expansion
causing it to rub against the case?

-tom

On Mon, 21 Feb 2005 06:45:37 -0800
Greg Field <gre-@gregfield.com> wrote:
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Oddly, the one that I fixed had an input shaft that
took
 a few good whacks to get out. Makes sure all fastenings
are off, putt down some padding, set the tranny on the
flange for the rear cover, and whack it with a plastic
hammer.

GF

On Monday, February 21, 2005, at 04:50 AM, tom
christian
 wrote:

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Any thoughts on why the input shaft is being so
stubborn?

On Sun, 20 Feb 2005 17:03:03 -0800
Greg Field <gre-@gregfield.com> wrote:
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 >If it shifted OK before, no need to reshim the
shafts.
 
 >I repaired one just like you describe (hole punched
through case)
last fall. Just tighten everything well, and it
should
 
 >work if it was
working. In your case, the nut on the aft end of the
shaft may also
have been loose, causing the crunchy shifting. Take
out
 
 >the output
shaft and make damn sure you have the front, ccw
tightening, nut
fully seated. Use red loctite on it and punch it
thoroughly to
prevent loosening. Then shim the drum.
GF
On Sunday, February 20, 2005, at 02:52 PM, tom
christian
 
 >wrote:
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about
 
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Rad
 
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>
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 >>
> The long story as short as possible - last spring I
>bought my '74
> disc Eldo Police and after a few miles the forward
>layshaft nut
> chewed through the tranny case (last year). I tried
the
 
 >>quick fix -
> attaching a new nut through the chewed hole and
sealing
 
 >>the hole up
> with scrap aluminum and JB Weld - and the tranny
made
 
 >>godawful
> noises when shifting up from first as it
transitioned
 
 >>neutral - so I
> put it away.
>
> Just getting around to starting the project now -
so,
 
 >>using Pete
> Ropers DIY article from guzzitech on shimming as a
>reference I
> pulled the tranny apart today - and it all looks
brand
 
 >>spanking new.
> Nothing broken, no metal bits. The input shaft is
not
 
 >>coming out,
> even after a few taps. Before I go wailing on it, I
>thought I'd
> check to see if there's something I missed - it
feels
 
 >>like its still
> "locked" in place - I removed the nut, tang washer
and
 
 >>Boss. Also
> interesting, I only found one hardened washer under
the
 
 >>pegnut on
> the speedo, not under the drive itself?
>
> If anyone has any hints on what to look for, and
>reshimming the 3
> shafts (not just the drum), certainly appreciated.
>
> Thanks, -tom
>
> Your free subscription is supported by today's
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Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender

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Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender

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