2017 V7 III Stone Rear Brake parts function

[bmw111]

I'm wondering what purpose do the two parts highlighted in the attached image serve? I was looking at the rear brake to see if I can adjust the lever down a bit (apparently not) and the o-ring (11 on the fiche page) fell off the shaft into my hand. So I looked at the fiche but not sure the exact purpose of that o-ring and how it interacts with the "gear selector fork clips" piece (13 on the fiche page).

 

[Vagrant]

I just finished adjusting mine Sunday. 13 snaps over 12 to keep it in place and then the O ring goes over it just to be safe. If you remove 13 then 12 is threaded onto the shaft and will give you some adjustment. #4 is some engineers wet dream. It should be a bolt with an adjustable nut to adjust the brake light switch. But, it is all one piece so on the assembly line they just screw it in tight and hope for the best. Sometimes best is not good enough. I went to the hardware store and got a slightly longer bolt and a nut, then installed them with lock tite. IT IS A BITCH TO DO! Make sure you use some waterproof grease on the #13 pin.

 

[bmw111]

So #11 o-ring just rides on top of #13 pin "just in case?" That pin is on the shaft pretty tight (at least on my bike) and I think any force required to pop that pin off the shaft would easily snap the o-ring. Strange setup but this is my first Guzzi.

 

[Vagrant]

13 has a 3/4 diameter metal strip that snaps down on the shaft. The O ring goes over it to hold it just in case. You just roll it forward to remove 13 then roll it back. Clear as mud, right?

 

[bmw111]

Got it. I'm thinking a small zip tie there would provide the same security until I decide to remove/adjust everything.

 

[Vagrant]

I was thinking the same thing. However, because your life could depend on the brake a small hose clamp might be smarter.

 

[Bill Meyer]

The lack of adequate brake lever adjustment is stupid. I made a drop link from some T6 strap. A 20 minute task that does the trick.

 

[bmw111]

The lack of adequate brake lever adjustment is stupid. I made a drop link from some T6 strap. A 20 minute task that does the trick.View attachment 32526

Nice. Good idea.

 

[sib]

...The O ring goes over it to hold it just in case....

Or to keep it from rattling.

 

[bmw111]

Or to keep it from rattling.

Mine's on there so tight I'll need a tool to pry it loose. Maybe after removing it a few times for "adjustment" it loosens up? Strange piece of engineering. Never seen anything like it on all the other bikes I've had.