Brake problems again. Sticking calipers

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ShadowRanger

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I'm sorry that I'm just seeing your responses. Thank you so much for them. Mine is a 2011. The caliper in question is a rear one. I plan to pull the wheel back off again soon and inspect the caliper to try and determine if it's OEM or not. I'll take pictures.

I'll also look at Rock Auto; thanks.

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ShadowRanger

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What about replacing the entire caliper?

Is that a big expense?

I got my dealer to do it (warranty) and haven’t had a problem with the new ones.
These caliper bolts range from $10-$40 per set, whereas replacing the entire caliper would be hundreds of dollars. Given that I successfully got the bolt removed, I don't see it fit to replace the caliper at this point. And at 8+ years old and 175,000 miles, warranty replacement will not be an option.

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ktm525

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Clean out the holes on the caliper and install new pins. The ones from Carlson on ZRock Auto are $5. They key is to use a ceramic/silicone based lube and use lots and often (yearly).
 

howardduff

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Looking at the diagram from the workshop manual on the first page of this post. I am confused. The circled note says to make sure the bushed pin is in the lower hole. When I changed my brakes last week the bushed pin was in the upper hole and this is the first time the brakes were changed. I therefore replaced them the way they came out. I did check the fit of the bushed pin and seemed to fit the same in either hole, I have a 2015 MY LR4.
 

Frank8

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They replaced a caliper because the pins were frozen?

Yes. 2016 with about 15k on it as I recall. Front calipers were seizing intermittently and I could smell them. Nearest dealer is one hr+ and they’re anuses. It was easier for my indie to free up the pins which he did three times. I’d go a few hundred or thousand miles and they’d freeze again.

There had to be a defect in the caliper. LR didn’t want to correct it until I pointed out that this isn’t a problem with door lights, it’s a brake problem that’s intermittent and dangerous and do they want to assume the liability.

They put new calipers on the front and everything has been fine. So far.
 

ktm525

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The pistons were seizing or the caliper pins were seized in the caliper? Two different issues here.
 

Frank8

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The pistons were seizing or the caliper pins were seized in the caliper? Two different issues here.

It seemed to be both.
The last time I took it to my indie the pins were ok but the brakes had been smokin.

Can excessive heat cause a pin to jam?
 

ktm525

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All of my stuck pins have been the bushed ones. The bushing gets beat up a little and can stick. 99% of the time it is due to "synthetic" brake lube that causes the bushing to swell (regardless of what the lube packaging says). My yearly use of ceramic/silicone lube has cured the sticking.

Stuck pins will transmit vibration to the steering wheel (front) or ass (rear) under light high speed braking as the caliper cannot float with the rotor. It will not overheat brake.

Stuck piston will not retract and will overheat the brake/wheel.

I imagine excessive heat from a stuck piston would "cook" the caliper pin lube causing it to stick too.
 

Quijote

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All of my stuck pins have been the bushed ones. The bushing gets beat up a little and can stick. 99% of the time it is due to "synthetic" brake lube that causes the bushing to swell (regardless of what the lube packaging says). My yearly use of ceramic/silicone lube has cured the sticking.

Stuck pins will transmit vibration to the steering wheel (front) or ass (rear) under light high speed braking as the caliper cannot float with the rotor. It will not overheat brake.

Stuck piston will not retract and will overheat the brake/wheel.

I imagine excessive heat from a stuck piston would "cook" the caliper pin lube causing it to stick too.

I've started to notice that. Hmmm.
 

ktm525

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What you are feeling is disc runout either from uneven pad material transfer or actually warping of the disc itself (metal finding it's happy place). If the calipers are unable to float and track this then you will begin to notice the vibration. If the runout becomes too bad then it doesn't matter if the calipers can float.
 

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