MAVIC 825 thumbshifters: am I missing some parts?

foxb13

Senior Retro Guru
Hi,

I bought a pair of these thumbshifters to a fellow RBer years ago. But it was only today that I started cleaning and servicing them. The left shifter was really hard to shift so I disassembled it to have a look at what could be going wrong. Inside, there were grease residues but... no parts, so don't know what the grease was supposed to lubricate. However, it seems to me that there are tiny holes for a "retrofriction" spring, in Simplex parlance.

P1030740.webp

So, am I missing this spring (and perhaps other parts: spacer, washer, ...) as can be seen [1] in the first iteration [2] of MAVIC 825 shifters or does the second (and last) version [3] come without anything inside?

Thanks!

[1]
[2] https://bikerecyclery.com/nos-mavic...r-bar-870-paris-gao-dakar-group-black-silver/
[3] https://velobase.com/ViewComponent.aspx?ID=ff107652-0fe8-4519-aa40-107202896b3a&Enum=104
 
From the parts diagram the springs do look a lot like cantilever springs, but without them in hand it´s hard to jugde what the size is. Failing to find fitting ones you could try your hand in making them yourself?

 
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