What does this piece do that came with my disc brake?

Question

I recently ordered hydraulic Shimano disc brakes with rotors and they came with a bunch of hardware, including this piece: enter image description here

It looks like it would fit under the screws that secure the rotor to the hub: enter image description here

Does anyone know what I should do with it or what its function is?

score 14 · Accepted Answer · answered Apr 03 '15 at 01:12

14

These things are called tightening plates or lock washers. Your suggestion was righ in where it goes, here's an exploded diagram and installed photo: enter image description here

answered Apr 03 '15 at 01:12

Klaster_1 Нет войне

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It seems the OP is missing two of them then (the photo shows three) as well as the flange. – RoboKaren Apr 04 '15 at 14:28
I guess he'll have to contact the seller in this case. – Klaster_1 Нет войне Apr 04 '15 at 15:41
These are brand new disc brakes that I installed myself. I have 6 of those pieces, 3 for each disc brake. I just wan't sure what it was, so I showed one of them in the photo. Thanks for your help! – Josh Sherick Apr 05 '15 at 22:07
Can a source for the exploded view be provided? – Maic López Sáenz Apr 07 '15 at 20:55
I just found it on mtbr using image search. Judging by overall style, it looks like a screenshot from one of Shimano PDF docs, but I don't know which one. – Klaster_1 Нет войне Apr 08 '15 at 00:39
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@LopSae Official Shimano exploded views: Rear Disc Brake. Front Disc Brake – Stainy Apr 14 '15 at 20:05

What does this piece do that came with my disc brake?

1 Answers1