rear caliper piston boot torn
#1
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rear caliper piston boot torn
I have a 2011 rx350 and the rubber boot that covers that covers or slides in and out with piston is torn. Can this be fixed? If so, would it be through an aftermarket vendor, because I'm either searching wrong or Lexus doesn't make one. Any help or part number or proper vernacular would be appreciated so I can search more efficiently. Thanks, fingers crossed.
Last edited by hippt; 09-28-18 at 05:44 AM. Reason: clarification
#2
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The fix is a new caliper. You have to remove and rebuild the caliper to replace the boot. The labor is not worth it and no one does it anymore unless a shade tree mechanic doing their own work. Everyone else will just replace it. If all else is good, just put it back together and replace the caliper next time you need brakes or if it starts having issues due to all the road salt in MN.. I assume you noticed it when replacing your own pads as that is the only way to see it.
#3
You can replace it by retracting caliper piston all the way into the bore. Then you can get to the grove, dust seal is in and pull it out.
I wouldn't be paying much attention to that though. I drove cars that literally had none of it left and was not a problem. You may apply thick coat of some quality grease along the piston exposed edge, then press it in with C clamp, to spread it. I feel it's more of fiddling, than necessity.
I wouldn't be paying much attention to that though. I drove cars that literally had none of it left and was not a problem. You may apply thick coat of some quality grease along the piston exposed edge, then press it in with C clamp, to spread it. I feel it's more of fiddling, than necessity.
#4
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I agree with Ukrkoz. It is just a dust boot. I have ignored torn ones for years on other vehicles back when I was much younger. Every time I replaced pads I would see the tear, then clean and compress the piston back in and move on.
#5
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Just to give a different perspective ...
Torn/ripped boots can compromise proper working of the brakes.
Now if you drive in an environment that there is never any grime or dirt or mud, yes you can do without boots.
The slave cylinder is exposed without boots and as the piston moves out [not during braking] as the pads wear out, the hydraulic action is happening in the area which was previously exposed.
My drive to to DIY is making sure the job is done right. I do enjoy the work and save a lot of money but I do not skimp on things.
Since I do my own work, I have never had a ripped boot. It generally happens when the a screw driver is used to lever in/out the pads or when pads are inserted without care.
Tip: Before pushing back the pads, make sure you clean the piston area [you dont want to push junk past the boot]
ps: Boots should be in stock at the dealership.
Salim
Torn/ripped boots can compromise proper working of the brakes.
Now if you drive in an environment that there is never any grime or dirt or mud, yes you can do without boots.
The slave cylinder is exposed without boots and as the piston moves out [not during braking] as the pads wear out, the hydraulic action is happening in the area which was previously exposed.
My drive to to DIY is making sure the job is done right. I do enjoy the work and save a lot of money but I do not skimp on things.
Since I do my own work, I have never had a ripped boot. It generally happens when the a screw driver is used to lever in/out the pads or when pads are inserted without care.
Tip: Before pushing back the pads, make sure you clean the piston area [you dont want to push junk past the boot]
ps: Boots should be in stock at the dealership.
Salim
#6
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Just to give a different perspective ...
Torn/ripped boots can compromise proper working of the brakes.
Now if you drive in an environment that there is never any grime or dirt or mud, yes you can do without boots.
The slave cylinder is exposed without boots and as the piston moves out [not during braking] as the pads wear out, the hydraulic action is happening in the area which was previously exposed.
My drive to to DIY is making sure the job is done right. I do enjoy the work and save a lot of money but I do not skimp on things.
Since I do my own work, I have never had a ripped boot. It generally happens when the a screw driver is used to lever in/out the pads or when pads are inserted without care.
Tip: Before pushing back the pads, make sure you clean the piston area [you dont want to push junk past the boot]
ps: Boots should be in stock at the dealership.
Salim
Torn/ripped boots can compromise proper working of the brakes.
Now if you drive in an environment that there is never any grime or dirt or mud, yes you can do without boots.
The slave cylinder is exposed without boots and as the piston moves out [not during braking] as the pads wear out, the hydraulic action is happening in the area which was previously exposed.
My drive to to DIY is making sure the job is done right. I do enjoy the work and save a lot of money but I do not skimp on things.
Since I do my own work, I have never had a ripped boot. It generally happens when the a screw driver is used to lever in/out the pads or when pads are inserted without care.
Tip: Before pushing back the pads, make sure you clean the piston area [you dont want to push junk past the boot]
ps: Boots should be in stock at the dealership.
Salim
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