davyw
Seasoned Trail Rider
Posts: 154 
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Post by davyw on Jan 30, 2021 18:25:37 GMT -5
At the end of my last ride I noticed my brake pedal was getting very soft like it was out or low on fluid.... I checked the master cylinder today to check the fluid level and had plenty to fluid but I noticed the bladder in the cap was full of brake fluid. I thought the bladder was suppose to be empty of fluid and only contain air..... Thoughts anyone and if I need a new bladder were or how the best way to replace?
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Post by David B on Jan 31, 2021 18:03:37 GMT -5
Ck your brake pads
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Post by Bob T on Jan 31, 2021 18:23:04 GMT -5
I don't think fluid should be above the bladder. I think it is to fill the void when you press the pedal and fluid goes down. It is a barrier between the air and fluid. You don't want moist air mixing with fluid. I don't follow it but they say to not use fluid out of an opened can.
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Post by Randy_R on Jan 31, 2021 19:00:17 GMT -5
They say don’t use open brake fluid since it’s hygroscopic. I still use it since the container is open for short periods and I ain’t a race car driver.
The soft feeling is likely needing pads. If it’s a Popo weird crap can happen when pads wear out. I’ve seen several Popos kick a backing pad out and fully extend caliper causing fluid loss. Caused me to drive back to Hilltop from Sophia with zero brakes.
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davyw
Seasoned Trail Rider
Posts: 154
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Post by davyw on Jan 31, 2021 23:50:59 GMT -5
I checked and the front pads were completely gone so I replaced them but I still have the soft pedal....I will check the rear tomorrow but I just replaced them about 6 months ago. I changed the front last spring but will check the rear tomorrow....
The bladder in the cap looks terrible. i have never noticed but I thought the bladder was sealed and would not contain any fluid........
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Post by Randy_R on Feb 1, 2021 16:40:55 GMT -5
My memory is the bladder just snaps inside the cap. It just takes up some air room. After you change the pads bleed the brakes. That should do it.
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Post by Bob T on Feb 1, 2021 18:41:14 GMT -5
I just checked mine. The rubber bladder separates the brake fluid from atmosphere. The plastic washer between the cap and bladder has grooves that allow air into the bladder. When your brakes wear and it takes more fluid to press them in all the way and the bladder will expand to fill the void. My bladder was full of muddy water where I drove though deep water or got stuck in it.
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Post by Allen S on Feb 1, 2021 21:27:25 GMT -5
My rzr 800s done the same thing you’res did. I just cleaned it up and rode on.. my brakes on it always sucked.
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Post by Randy_R on Feb 1, 2021 22:35:55 GMT -5
To be honest my X3 brakes aren’t rock solid. They work but brakes are one of the most common complaints.
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davyw
Seasoned Trail Rider
Posts: 154
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Post by davyw on Feb 2, 2021 9:22:01 GMT -5
The rear pads were not completely worn out but I changed anyway and the pedal feels normal again..... thanks everyone for the input...it made me feel better when Bob had muddy water in his cap and Allen had the same problem with his 800...
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