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Rear Caliper Dust Boots Split

  #1  
Old 09-09-2009, 10:31 AM
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Rear Caliper Dust Boots Split

Anyone figured out a way to replace w/o removing caliper and extracting piston?
 
  #2  
Old 09-09-2009, 06:10 PM
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yes....MINI makes a specific tool for it in their rear brake service kit. I think you could do it without it though. The old boots will pop off with a small 6" screwdriver. The tool simply presses them back on, but if you worked them back on a little at a time, it should go on fine. No piston removal required.

BTW, I grab the boot and pull it sideways I(leaving a gap in between the piston and the boot). and spray some lube in there so that the boot will not try and spin with the piston when turning it back in.
 
  #3  
Old 09-09-2009, 06:52 PM
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Many thanks! You confirmed my suspicions. BTW, MINI's list price is $30+ just for the boot! I went on a search and found suppliers that sell the boot and piston seal for both front and rear calipers for about $5.00 ea.
 
  #4  
Old 09-10-2009, 10:48 AM
k-huevo
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Please share the source of the less expensive boot and also follow-up on the install. I've seen the torn rear boot before.
 
  #5  
Old 09-10-2009, 05:39 PM
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http://cpwstore.carpartswholesale.co...versal:0)&sv=0

Order in process. Have ordered 2 ea. front and rear kits. Will let you know when they arrive and if they are the same. If so, it's a huge savings!
 
  #6  
Old 09-11-2009, 07:17 AM
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Looking forward to hearing results, also need to replace one, TIA.
 
  #7  
Old 09-13-2009, 06:32 PM
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What about the front dust boots? Can they be replaced without a caliper rebuild?

Not to read too much into it, but in the Bentley manual it says to inspect the boot and if damaged replace it. It then says if leaks are found to replace the caliper. Hmmmm ... it makes it sound like the front dust boots could be replaced without a caliper rebuild.
 
  #8  
Old 09-16-2009, 02:12 PM
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Follow-up: I just received the re-build kits from the link referenced above. Both front & rear look like the real deal, boots, piston seals, etc., all for what MINI wants for one (1) rear boot! Will tackle the job when I replace rear pads (soon) and report on the install. BTW, folks, I know MINI wants to sell parts but FWIW, I've been rebuilding brake calipers for years. If the sleeves and pistons aren't scored, it's a simple matter to blow the piston out with compressed air via the bleed nipple. Keep your fingers clear and cushion the piston with a wood shim in the caliper. Relace seal, dust boot, re-install and bleed.
 
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Old 11-09-2009, 01:55 PM
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i just ordered the rear rebuild kits plus some cheap rotors and midway priced pads . i'll keep track of the wear etc. and post in future . but if i get just a couple years i gotta say thanks for info . the prices are looooooow .
 
  #10  
Old 01-18-2010, 03:57 PM
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Finally got around to replacing my rear pads in anticipation of the up-coming track season. After removing the old pads, the pistons are extended and make replacing the rear boots EZ. These inexpensive aftermarket ones fit fine and at a mere fraction of the OEM.
 
  #11  
Old 02-17-2011, 02:08 PM
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So, is there a seal inside the caliper on the rears? I have one rear caliper that has a torn dust boot. When I push on the boot I get a bit of fluid coming out. That says to me that the internal seal isn't seating properly or is worn. MINI doesn't even sell a rebuild kit for the rear, though they sell the boot. While I've done caliper rebuilds on other cars, I haven't on a MINI before. It'd be great if someone had photos of the parts and the process.

Thanks!
 
  #12  
Old 02-17-2011, 03:25 PM
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Originally Posted by DJC View Post
So, is there a seal inside the caliper on the rears? I have one rear caliper that has a torn dust boot. When I push on the boot I get a bit of fluid coming out. That says to me that the internal seal isn't seating properly or is worn. MINI doesn't even sell a rebuild kit for the rear, though they sell the boot. While I've done caliper rebuilds on other cars, I haven't on a MINI before. It'd be great if someone had photos of the parts and the process.

Thanks!
I think this covers the basics...(from above)


Originally Posted by NC TRACKRAT View Post
I've been rebuilding brake calipers for years. If the sleeves and pistons aren't scored, it's a simple matter to blow the piston out with compressed air via the bleed nipple. Keep your fingers clear and cushion the piston with a wood shim in the caliper. Relace seal, dust boot, re-install and bleed.
Parts from here....



Originally Posted by NC TRACKRAT View Post
http://cpwstore.carpartswholesale.co...versal:0)&sv=0

Order in process. Have ordered 2 ea. front and rear kits. Will let you know when they arrive and if they are the same. If so, it's a huge savings!
 
  #13  
Old 02-24-2011, 03:00 PM
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Um, actually that didn't answer my question at all. I've done quite a bit of searching on this site and haven't yet found a thread or blog that gives any detail about the internals for the caliper. I bought the kit, which has the dust boot, a seal, an o-ring and some other ring that someone in one thread postulated was a seal that went inside the piston, IIRC. What I am looking for is a diagram or photos of the caliper and piston and instructions on disassembly and re-assembly that are reasonably detailed. In other words, I'm trying to avoid having to reinvent the wheel.

Thanks. I hope someone here has actually taken one apart before.
 
  #14  
Old 02-24-2011, 03:13 PM
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There are four things in the kit. Just take apart the old one, look where things are, and put the new ones it their place. You are making this harder than it is.

Mini calipers are just like every other caliper....

Look here and see if it helps....

http://www.google.com/search?q=how+t...+brake+caliper
 
  #15  
Old 10-26-2015, 01:54 PM
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Originally Posted by chadtoolio View Post
yes....MINI makes a specific tool for it in their rear brake service kit. I think you could do it without it though. The old boots will pop off with a small 6" screwdriver. The tool simply presses them back on, but if you worked them back on a little at a time, it should go on fine. No piston removal required.

BTW, I grab the boot and pull it sideways I(leaving a gap in between the piston and the boot). and spray some lube in there so that the boot will not try and spin with the piston when turning it back in.
Do you know what this tool is or the part number? I need one!
 
  #16  
Old 10-27-2015, 12:02 PM
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https://www.northamericanmotoring.co...r-caliper.html




You can work them off and on.


Believe the full tool kit is this: 83300494003

https://www.ecstuning.com/Search/SiteSearch/83300494003/
 
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Old 10-27-2015, 12:09 PM
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Thanks for the reply! I checked the site and unfortunately no pictures. Do you have a listing of all of the components? I already have a caliper tool.
 
  #18  
Old 10-27-2015, 12:22 PM
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Yea, no pics as of yet, most of the MINI special tools are very hard to find. I have a listing and it looks like its just the piston tool , not the tool to remove the dust gasket.

I will see if I can find it separately.
 
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  #19  
Old 10-28-2015, 03:31 PM
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Originally Posted by ECSTuning View Post
https://www.northamericanmotoring.co...r-caliper.html




You can work them off and on.


Believe the full tool kit is this: 83300494003

https://www.ecstuning.com/Search/SiteSearch/83300494003/
I'm working on a solution to this issue! I have a prototype that works GREAT!!!
 
  #20  
Old 10-29-2015, 05:35 AM
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Nice !
 
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  #21  
Old 04-10-2019, 04:19 PM
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Sorry to revive an old thread but I'm not able to get the dust boot to seat on the inner edge. Is there any way to do it without taking off the piston?

 
  #22  
Old 04-10-2019, 05:57 PM
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Take a broad chisel or lunch and gently tap it down by the edge as you slowly work your way around the edge. Or find something round like a piece of pipe that will fit over the seal and tap it with that. The punch method will work though. Just tap a little at a time as you work around the edges don’t get it severely cocked on one side or it will possibly bend it out of shape. Sometimes you have to McGyver it when working on vehicles.
 
  #23  
Old 04-10-2019, 06:01 PM
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Thanks! The issue is it keeps popping out if I press in one side, idk if a chisel would work. I'll see if I can find a pipe that fits 😄
 
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Old 04-10-2019, 06:25 PM
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been there done that. Just be patient and give light fast taps as you go back and forth from one side to the other. You just have to get it to stick in place then you can start tapping it in place. Try some grease around the edge.
 
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  #25  
Old 04-11-2019, 03:42 AM
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was finally able to get it on there. Its a bit crooked coz I think we hammered it a bit too much. Either that or the bit on the bottom is not completely on there. I had to ask a friend to use 2 chisels while I held the bottom of the dust boot on using small screwdrivers. Thanks for the chisels suggestion!
 
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