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Sticking calipers

Old 10-28-2017, 04:09 PM
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Default Sticking calipers

So last week my right caliper started sticking. It has done it before maybe 5 months ago but just briefly. Anyhow, I decided to
Put a new one in and problem solved. Now a week later the left one is sticking. What are the odds of both failing around the same time? Is it even a caliper issue or maybe a master issue? Also I notice it is more likely to happen when I drive more than half an hour. In short drives it seems like it doesn't happen
Old 10-28-2017, 06:54 PM
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Bump. need help. gotta fix this for tomorrow
Old 10-28-2017, 07:12 PM
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What do the pad slides look like on the knuckle?
Old 10-28-2017, 07:13 PM
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Originally Posted by roninofako
What do the pad slides look like on the knuckle?
My first thought/question aswell
Old 10-28-2017, 07:53 PM
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Not too familiar with what you mean. can you explain. the right caliper was replaced last week. the left caliper is maybe 3 years old
Old 10-28-2017, 08:06 PM
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The pad slides on the knuckle, the portion where the brake pads rest on.

These can become grooved and cause sticking issues.

Like this:

Sticking calipers-20160507_170328.jpg

Sticking calipers-20160507_170332.jpg
Old 10-28-2017, 08:08 PM
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Originally Posted by samhain
Also I notice it is more likely to happen when I drive more than half an hour. In short drives it seems like it doesn't happen
Is/was the brake fluid clean & clear? Are the flex lines swollen?
Old 10-28-2017, 08:13 PM
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Gotcha. the pad slides look fine and the fluid looks clear. I inspected the lines and they look fine and not collapsed or ballooned. I blew the brakes quite a bit so most of the fluid is fresh. how likely is it that both calipers can start to stick in a matter of a week. I'll replace the caliper tomorrow but I'd hate to throw parts at it and find out its something else
Old 10-28-2017, 08:18 PM
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If the fluid was not changed regularly it absorbs moisture and can rot the seals so they can no longer retract the piston.
Old 10-28-2017, 08:26 PM
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Right like I said most of the fluid had been replaced because I bled the brakes quite a bit and I don't dump it back in. I only add fresh fluid. am I being paranoid that it can be something like the booster or proportioning valve? or just a weird coincidence that they both failed within a week of each other

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