Summershandy

Master Brake Cylinder/brake switch

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Today I tackled my master. When I removed the block holding the switch, I noticed the bolt has a hole through it. Of course I didn't notice the orientation but I'm thinking, if you needed to change the switch maybe you'd back off the bolt and tilt the block thus plugging the hole as not to get air in the system? I think the tricky part will be making sure the hole faces the switch when I reinstall. Pretty neat if that's the case. Oh, the block doesn't seem brass either as I was warned not to crack them, they might be hard to come by. This one is really stained and dirty. 

 

 

IMG_6897.JPG

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No wait, that doesn't make sense as I look closer at the picture. The hole is in a groove around the bolt so turning wouldn't seal it. New question, does the orientation of the hole matter or is it just there to allow fluid pressure to reach and operate the switch? 

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5 hours ago, Summershandy said:

New question, does the orientation of the hole matter

 

No, orientation of the bolt doesn't matter.  The groove allows fluid to flow from the bolt into the block.

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