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Last time I did a brake job I noticed my rear caliper dust boot had a small tear. Also earlier this year I saw this post, searched the forums and no pics/DIY.
https://www.clublexus.com/forums/gs-...w-caliper.html @WBenz Problem:
Torn dust boot cover. If you don't replace it dirt can build up inside and potentially/eventually damage the piston seal and cause it to leak(it will take a long time before that happens), but better to fix it asap.
Solution:
This DIY will show you how incredibly easy it is to replace the dust boot even with the piston pushed all the way back. I bought a used caliper on eBay for $40 to practice with before attempting this on my actual calipers, since this was my first time replacing the dust boot. When you do this on your actual vehicle make sure you clean the area under the dust boot and lube the piston/new dust boot prior to reinstalling.
1: Pic of the rubber caliper dust boot I'm going to replace. I pushed the piston all the way back to show how easy this job is with the most unrealistic circumstance. So you can easily replace with the caliper on the car.
2: Insert a small flat head screw driver between the edge of the caliper and the dust boot angle it inwards.
3: Then move the flat head screw driver outwards to pry/pop the dust boot out of the groove.
4: Dust boot is free from the inside of the caliper, but attached to the piston.
5: Then pull it off.
6: What the piston looks like without the dust boot. At this point you would use brake cleaner to remove dirt/debris. Then put lube/grease.
7: Lexus/Toyota has the metal retainer integrated inside the bust boot. This is makes install/removal much easier that the old school covers that had the metal retainer separate.
8: To reinstall push the inside of the dust boot out.
9: Now you install the inside part of the dust boot onto the groove on the piston.
10: Dust boot fully installed on the piston. You can inspect to verify it's fully seated.
11: Now just push the rest of the dust boot down to fully seat it into the groove on the inside of the caliper. Run your fingers in a circle around the edges of the dust boot.
12: Success!
Last edited by peasodos; Oct 27, 2022 at 10:31 PM.
Yes no need to replace caliper, rebuild caliper, remove caliper from the vehicle, remove piston, disconnect brake lines.
The OEM part number for the rear caliper repair kit is 0447930580, it costs about $58 with shipping with clublexus discount code CL5 from mylparts. Or If you check rock auto and buy the rubbers aftermarket for a few dollars.
You'll spend more time jacking the car up and removing the wheel than doing this DIY
Last edited by peasodos; Oct 27, 2022 at 10:59 PM.
Oh what grease did u use for this? Any brake grease is good?
Brake Fluid. This was a $40 used eBay practice caliper, it didn't have any damage so already greased up. I haven't changed the caliper dust cover on my car yet, just ordered the new parts. The pic of the torn boot from my original post was from another CL member that had this problem. I found the tear/cut/crack in my boot last time I did brakes, only resolving it now lol. Honestly it could have been like this for a long time, don't normally inspect the caliper boot dust cover that closely.
I actually bought the oem caliper rebuild kit and it came with a packet of original Toyota rubber grease, it was 10x price of aftermarket, but had to keep it oem.
Easy DIY: Torn/Damaged Caliper Dust Boot Replacement
