Brake caliper. What the heck are these?

[Simon Davey]

So tonight I stripped and cleaned my rear brake caliper. 

I thought the previous "bell end" has put the pistons in up-side-down. 

These plastic things just seem to rattle about in the pistons, but appear to be pointless. 

Are they some kind of gimmick for reducing noise? 

I'm inclined not to put them back when I reassemble tomorrow night. 

Thanks in advance. 

[KiwiBob]

I don't know if this is the same as yours but it shows those plastic  bits.

 

 

[husoi]

I would check sites like cmsnl or partzilla and check the diagrams.

It should tell you if that's part of the assembly 

[AstronautNinja]

Something to reduce the air volume possibly? 

[Simon Davey]

Thanks people, I think they're to reduce noise. 

I'm check the handbook tomorrow. 

[AstronautNinja]

A quick Google seems to indicate they're for heat dissipation / heat soak prevention 

[Stu]

Anti squeel shims 

 

They stop metal to metal contact 

 

Shouldn't be loose though 

[Simon Davey]

8 minutes ago, Stu said:

Anti squeel shims 

 

They stop metal to metal contact 

 

Shouldn't be loose though 

 

Ah right, maybe they're worn. 

Seems strange to have them on the back, and not the front. 

Cheers Stu.