p6x Posted Monday at 06:50 PM Author Posted Monday at 06:50 PM 2 hours ago, gstallons said: These 0-rings are nothing more than dust shields to keep out "bad stuff" and the wave washer or spring keeps the side (in & out) motion to a minimum . You are correct. I took the shift lever off the holding sleeve, and by looking into it, I can confirm those o'rings have no other purpose than preventing dirt from entering. The external diameter of the shift lever axe is 16mm exactly. I only found one o'ring, so mangled that I can't get any cross section measurement. So I ordered the ones from AF1racing which I will measure when they get to me. I took some photos just for the record. Both bushing are inserted. As you can see the clamping part of the gear lever does not return to unstressed position. That 7mm play is there to stay.
p6x Posted Monday at 06:53 PM Author Posted Monday at 06:53 PM 2 hours ago, gstallons said: Morse = ? are you referring to the splines ? Sorry for the franglais. I am trying to point at the claw of the gear lever, that you tight up to clamp down on the shift lever spline. In French the two sides of a vice grip are called the morses.... ignore please, I thought I was speaking english. 1
gstallons Posted Monday at 07:09 PM Posted Monday at 07:09 PM I would get prices and availability on these two parts. If these are a crazy #s , I would grind a gap in the clamping area and tighten it down to verify it will hold and go back together . You can (after you get finished) drill and pin it w/a roll pin to keep it from slipping . 1
gstallons Posted Monday at 07:22 PM Posted Monday at 07:22 PM Moto Guzzi prices on the two shift parts are around $100 . Take your stuff to a machinist and get their opinion . You may want to go together w/new stuff
p6x Posted Monday at 10:11 PM Author Posted Monday at 10:11 PM @gstallons My current plan, once I get the o'rings, is to install ring shims to make up for lateral play. 7mm of free play seems to be way too much. I wish I could find a Quota owner to compare. I will shim before the spline, so the wave washer is slightly compressed. This should help. I will also put a shim in front of the wave washer, to keep the o'ring inside.
p6x Posted Thursday at 06:16 PM Author Posted Thursday at 06:16 PM (edited) I received the o'rings this morning: The size is ID=15mm x CS=1.5mm. Therefore, any O'ring GU90706141 is it; I paid 18 dollars for two o'rings.... Edited Thursday at 06:18 PM by p6x
p6x Posted Thursday at 06:21 PM Author Posted Thursday at 06:21 PM On 3/3/2025 at 6:25 PM, gstallons said: Yes ' replace them as a safeguard . I am not reinstalling the wave washer, as it did not serve any purpose. I have shimmed the shift lever properly, and it no longer has any lateral play. 1
gstallons Posted Thursday at 06:41 PM Posted Thursday at 06:41 PM Good , you got all the parts ? Do fill this bushing cavity w/grease when you go back together. The wave washer is there to take up slack .
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