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 Crack at the middle of brake pads

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dwRK
post Oct 4 2020, 03:13 PM

the consummate chartist
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QUOTE(kkk8787 @ Oct 4 2020, 12:53 PM)
It's not a straight line but rather a zig zag line . I assume it's not. 
The model number is 04465-YZZE2
Some are telling its fake parts? Bought from fortune auto which prides themselves in original toyot parts
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when new the pad is thick and straight line gap is big...but the gap is actually joined together near the base plate... you wear the pad away so much already you don't see the straight line anymore...now just showing the zigzag crack line where it's originally joined...the crack is normal since its weakest part when the pad is new

This post has been edited by dwRK: Oct 4 2020, 03:30 PM
dwRK
post Oct 4 2020, 06:35 PM

the consummate chartist
*******
Senior Member
6,247 posts

Joined: Jun 2006


QUOTE(kkk8787 @ Oct 4 2020, 05:01 PM)
Wait I think im getting u. U mean the pad is actually 2 pieces joining together rather than 1 single piece so when u use it till the end u can see the joint. But somehow the joint is zig zag
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actually it started life as 1 piece...it's stuck to the plate, then a groove is cut into it about 80% deep... this is the line you see on new pads

the bottom of the groove is a stress concentration point...over time, it develops this crack you're seeing now... so it's correct the crack is zigzag a bit but follows the big groove line

correct...you use past this 80% depth, you'll just see this crack line

 

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