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 So where has this come from?

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sidrat
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PostSubject: So where has this come from?   Mon Jan 02, 2017 9:57 am

So i have taken the swing arm off and applied grease to all of the bearings in the suspension and swingarm, took the shock off and cleaned it up, a job i have put off since i bought the bike a couple of years ago. While i was taking the swing arm off, this bush dropped on the floor. I had the two footrest plates off, the rear wheel, disconnected the rear brake and the torque arm, as you can see from the bottom photo.

i have now put most of it back together, thinking that it will be obvious where it fits as its a large bush, but i have not found a home for it.

Can someone shed some light?

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Guzzi Cat
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 11:44 am

Not sure, but it looks like a back wheel spacer bushing (cant remember for sure), its been a while since I had the swing arm off,

Someone will be along shortly with a definitive Exclamation
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fredfrenzy
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 12:43 pm

Shock pivot bush, I think.
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Pete Roper
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 12:53 pm

Good call. What's the ID? And the OD of the spigot?
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sidrat
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 1:12 pm

Pete Roper wrote:
Good call. What's the ID? And the OD of the spigot?

ID 10mm OD 16mm
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sidrat
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 1:13 pm

fredfrenzy wrote:
Shock pivot bush, I think.

top or bottom? would there not be two?
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sidrat
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 1:14 pm

Guzzi Cat wrote:
Not sure, but it looks like a back wheel spacer bushing (cant remember for sure), its been a while since I had the swing arm off,

Someone will be along shortly with a definitive Exclamation

Now that is interesting as i thought it fell out when i moved the wheel, but cannot see where it would fit?
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sidrat
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 1:15 pm

The manual i have does not show a good parts explosion, anyone have one?

thanks for the help
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 1:27 pm

OK so found some parts diagrams here

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going through them now
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 1:32 pm

found it!!!

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Number 10!
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fredfrenzy
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 1:54 pm


Yes fits in the swing arm.

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sidrat
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 2:13 pm

fredfrenzy wrote:

Yes fits in the swing arm.

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looks like i will be taking some of it apart again!

many thanks
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Pete Roper
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 2:18 pm

Win! Nasty if you left that out!
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fredfrenzy
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PostSubject: Re: So where has this come from?   Mon Jan 02, 2017 2:53 pm

Pete Roper wrote:
Win! Nasty if you left that out!

Better to find it now ....
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avgpetro
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PostSubject: Re: So where has this come from?   Tue Jan 03, 2017 3:54 am

Hi, just in case that you haven't put everything together yet, can you please measure the diameter of the bush that holds the swing arm axis? The one that has the 4 ingots - also how wide those ingots are?

I'll also take off the swingarm to grease the joints, I'm thinkng of making a "special tool" for this, by grinding a hex socket, having it ready would be nice. Thanks.
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PostSubject: Re: So where has this come from?   Tue Jan 03, 2017 8:01 am

avgpetro wrote:
Hi, just in case that you haven't put everything together yet, can you please measure the diameter of the bush that holds the swing arm axis? The one that has the 4 ingots - also how wide those ingots are?

I'll also take off the swingarm to grease the joints, I'm thinkng of making a "special tool" for this, by grinding a hex socket, having it ready would be nice. Thanks.

Hi, that wont need to come off to replace the bit i need to fit, sorry. I used a simple c spanner for the rear shock for mine :-)
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PostSubject: Re: So where has this come from?   Tue Jan 03, 2017 2:14 pm

Win! Nasty if you left that out! wrote:

What is the purpose of this T-bush? When I regreased my suspension needle bearings on my B11, the Guzzi dealer had place this on the OUTSIDE of the swingarm, acting like a washer for the bolt nut. (I'd had some warranty work done on the gearbox years before and they were the only ones who could have touched it).

Rode 50,000km without adverse affect!
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Pete Roper
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PostSubject: Re: So where has this come from?   Tue Jan 03, 2017 5:51 pm

Apart from the bottom shock mount being able to slide about on the bolt the bolt itself would be unsupported along a lot of its length. Big stress raiser on the bolt and a torsional stress on the swingarm boss.

Pete
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PostSubject: Re: So where has this come from?   Tue Jan 03, 2017 6:38 pm

avgpetro wrote:
Hi, just in case that you haven't put everything together yet, can you please measure the diameter of the bush that holds the swing arm axis? The one that has the 4 ingots - also how wide those ingots are?

I'll also take off the swingarm to grease the joints, I'm thinkng of making a "special tool" for this, by grinding a hex socket, having it ready would be nice. Thanks.

Petros, don't stress about the castellated nut torque setting or tightness, it is barely more than finger tight.
The 2 pinch bolts in the swingarm keep it in check. Overtighten the nut and you'll be stressing the tapered roller bearings.

At most a 'C' spanner will be the only "special" tool required.
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Pete Roper
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PostSubject: Re: So where has this come from?   Tue Jan 03, 2017 10:32 pm

Yup. The cast elated nut just preloads the tapered rollers. Do it the same as a trailer wheel bearing.

Pete
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PostSubject: Re: So where has this come from?   Wed Jan 04, 2017 2:52 am

Motoguzzimackers wrote:


What is the purpose of this T-bush?  When I regreased my suspension needle bearings on my B11, the Guzzi dealer had place this on the OUTSIDE of the swingarm, acting like a washer for the bolt nut. (I'd had some warranty work done on the gearbox years before and they were the only ones who could have touched it).  

Rode 50,000km without adverse affect!

It should be in the inside, the connecting block is offset in the swing arm and there is a larger gap on the exhaust side, which gets filled by the flange on the bush. If you remove the rear wheel and peer at the suspension you will see the gap. I would guess that you will just stress the swingarm with the bolt otherwise, as the bush is shorter than the thickness of the swingarm, and is used as the butt for the roller bearing internal spacer.

It was a nice tight fit, when i put it back in and all makes sense :-)
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PostSubject: Re: So where has this come from?   Wed Jan 04, 2017 5:05 pm

Thanks Sid and Pete. I'll go and check that I put it in the correct side.
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