Rear brake broken?

ChipToothy · 12-01-2019, 01:33 PM

Removed the rear brake caliper to pull the wheel to swap tires and now this morning the foot lever is floppy and the pads aren’t grabbing. I pulled the caliper off and put it back on hoping that would work but nothing changed. It’s got plenty of fluid and worked fine before I changed out the tire. Any guesses? I was hoping that maybe some water got in there and froze from when I gave it a wash and it just needs a thaw????

**I poured water over it all and it behaved normally for a couple of minutes so mystery solved. It’s too dang cold for this!

diyRdie · 12-02-2019, 02:31 PM

I was just out riding yesterday here and it was about 29°. But I make a habit to never wash my bike.

Frag2 · 12-05-2019, 04:18 AM

Most brake fluids ( Except for DOT 5 types ) are made from some type of glycol based compound. Most of those compounds have a freezing point of around -40 Deg C . That is from online search on brake fluid , Ive been out of bikes for while lot of changes since I owned 1. What remember if have fluid that's been there while it goes bad or is less effective -40 C is cold, if just wasted an had ice on it well. Hope not knowing much helps= Since ive been out of game long time

Mudflap · 12-05-2019, 04:43 AM

Probably just pushed the pistons into the calipers a bit. Pumping the brake peddle a bunch of times should return things to normal.

12-02-2019, 02:31 PM	#2
diyRdie Join Date: May 2019 Location: Rockford, IL Posts: 98	I was just out riding yesterday here and it was about 29°. But I make a habit to never wash my bike. __________________ Good judgment comes from experience, and often experience comes from bad judgment. MY BIKE'S THREAD
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12-05-2019, 04:18 AM	#3
Frag2 Join Date: Mar 2019 Location: Jefferson city Tenn Posts: 27	Most brake fluids ( Except for DOT 5 types ) are made from some type of glycol based compound. Most of those compounds have a freezing point of around -40 Deg C . That is from online search on brake fluid , Ive been out of bikes for while lot of changes since I owned 1. What remember if have fluid that's been there while it goes bad or is less effective -40 C is cold, if just wasted an had ice on it well. Hope not knowing much helps= Since ive been out of game long time
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12-05-2019, 04:43 AM	#4
Mudflap Join Date: Sep 2014 Posts: 1,894	Probably just pushed the pistons into the calipers a bit. Pumping the brake peddle a bunch of times should return things to normal.
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