I'm puzzled over this abnormal brake wear pattern
Just look at this and tell me what's wrong. The passenger's side brakes are wearing wierd, like half of the pad isn't making contact. We put new Cobalt rotors and pads on them, bedded them according to directions (twice) and they're wearing as per the pictures. This is old hat for me, so I'm reaching out in my time of need.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wannabe_si »</TD></TR><TR><TD CLASS="quote">who did the installation???
maybe the pad isnt seated properly in the caliper?</TD></TR></TABLE>we did the install...cobalt rotors all around, cobalt pads in teh front, axxis pads in the rear...after the first night of driving and noticing the odd heat spots on this rotor during the bedding process, we pulled them off the next day, completely cleaned them, etc. and fully reinstalled them
maybe the pad isnt seated properly in the caliper?</TD></TR></TABLE>we did the install...cobalt rotors all around, cobalt pads in teh front, axxis pads in the rear...after the first night of driving and noticing the odd heat spots on this rotor during the bedding process, we pulled them off the next day, completely cleaned them, etc. and fully reinstalled them
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wannabe_si »</TD></TR><TR><TD CLASS="quote">who did the installation???
maybe the pad isnt seated properly in the caliper?</TD></TR></TABLE>
You don't seat the pad in the caliper, you seat it in the cradle and slide the caliper over it. There is nearly a zero % chance of installation failure where the pads are concerned. The only thing I can think of is that maybe the pads were machined wrong or the rotor is warped from the factory.
maybe the pad isnt seated properly in the caliper?</TD></TR></TABLE>
You don't seat the pad in the caliper, you seat it in the cradle and slide the caliper over it. There is nearly a zero % chance of installation failure where the pads are concerned. The only thing I can think of is that maybe the pads were machined wrong or the rotor is warped from the factory.
mine are doing the same thing, just the opposite.... wearing on the outside, not on the inside...
so bump for any other info... i'm puzzled as well
maybe the caliper needs to be rebuilt? i dunno... just throwing things out there
so bump for any other info... i'm puzzled as well
maybe the caliper needs to be rebuilt? i dunno... just throwing things out there
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MAV3RiCK478 »</TD></TR><TR><TD CLASS="quote">did you grease your caliper pins?</TD></TR></TABLE>
You're really not supposed to remove the pins from the caliper. The correct way is to remove the caliper mounting bolts from the knuckle/spindle and then install the pads. It's also a lot easier to do it this way.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Archidictus »</TD></TR><TR><TD CLASS="quote">You don't seat the pad in the caliper, you seat it in the cradle and slide the caliper over it. There is nearly a zero % chance of installation failure where the pads are concerned. The only thing I can think of is that maybe the pads were machined wrong or the rotor is warped from the factory.</TD></TR></TABLE>
How many miles are on the new pads and rotors?
You're really not supposed to remove the pins from the caliper. The correct way is to remove the caliper mounting bolts from the knuckle/spindle and then install the pads. It's also a lot easier to do it this way.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Archidictus »</TD></TR><TR><TD CLASS="quote">You don't seat the pad in the caliper, you seat it in the cradle and slide the caliper over it. There is nearly a zero % chance of installation failure where the pads are concerned. The only thing I can think of is that maybe the pads were machined wrong or the rotor is warped from the factory.</TD></TR></TABLE>
How many miles are on the new pads and rotors?
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonek9 »</TD></TR><TR><TD CLASS="quote">You're really not supposed to remove the pins from the caliper. The correct way is to remove the caliper mounting bolts from the knuckle/spindle and then install the pads. It's also a lot easier to do it this way.
</TD></TR></TABLE>
yes, this is what we did
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
How many miles are on the new pads and rotors?</TD></TR></TABLE>so far not many...maybe 100 or 200 total...we went through the bedding procedure and just noticed that one part of the rotor wasn't even getting contact...a copule days later it rained and then after driving in the rain you really notice the lack of contact since the rust spots stayed (as per the pics)
it just seems very odd that the rotors would wear like that
</TD></TR></TABLE>
yes, this is what we did
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
How many miles are on the new pads and rotors?</TD></TR></TABLE>so far not many...maybe 100 or 200 total...we went through the bedding procedure and just noticed that one part of the rotor wasn't even getting contact...a copule days later it rained and then after driving in the rain you really notice the lack of contact since the rust spots stayed (as per the pics)
it just seems very odd that the rotors would wear like that
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94hatchling »</TD></TR><TR><TD CLASS="quote">mine are doing the same thing, just the opposite.... wearing on the outside, not on the inside...
so bump for any other info... i'm puzzled as well
maybe the caliper needs to be rebuilt? i dunno... just throwing things out there
</TD></TR></TABLE>
it's a 2002 and the caliper/brakes were fine previously...i really don't think the caliper needs to be rebuilt
so bump for any other info... i'm puzzled as well
maybe the caliper needs to be rebuilt? i dunno... just throwing things out there
</TD></TR></TABLE>it's a 2002 and the caliper/brakes were fine previously...i really don't think the caliper needs to be rebuilt
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MAV3RiCK478 »</TD></TR><TR><TD CLASS="quote">did you grease your caliper pins?</TD></TR></TABLE>
The RSX doesn't have caliper pins that you can remove. They have fully threaded bolts that were well greased before being reinstalled.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonek9 »</TD></TR><TR><TD CLASS="quote">You're really not supposed to remove the pins from the caliper. The correct way is to remove the caliper mounting bolts from the knuckle/spindle and then install the pads. It's also a lot easier to do it this way.</TD></TR></TABLE>
Yup.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">How many miles are on the new pads and rotors?</TD></TR></TABLE>
Under 100.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ECAhatch »</TD></TR><TR><TD CLASS="quote">but i'd suggest bleeding your lines</TD></TR></TABLE>
We bled them three times. It's not like I'm some noobie who hasn't already troubleshot this to the best of his ability. If it was something that I had originally overlooked it would have been fixed by now.
The RSX doesn't have caliper pins that you can remove. They have fully threaded bolts that were well greased before being reinstalled.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonek9 »</TD></TR><TR><TD CLASS="quote">You're really not supposed to remove the pins from the caliper. The correct way is to remove the caliper mounting bolts from the knuckle/spindle and then install the pads. It's also a lot easier to do it this way.</TD></TR></TABLE>
Yup.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">How many miles are on the new pads and rotors?</TD></TR></TABLE>
Under 100.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ECAhatch »</TD></TR><TR><TD CLASS="quote">but i'd suggest bleeding your lines</TD></TR></TABLE>
We bled them three times. It's not like I'm some noobie who hasn't already troubleshot this to the best of his ability. If it was something that I had originally overlooked it would have been fixed by now.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ECAhatch »</TD></TR><TR><TD CLASS="quote">pics no workie....
but i'd suggest bleeding your lines</TD></TR></TABLE>
pics work fine...they might take a little while to load, but they are defenitely active
and all 4 corners have been bled twice
but i'd suggest bleeding your lines</TD></TR></TABLE>
pics work fine...they might take a little while to load, but they are defenitely active
and all 4 corners have been bled twice
Do you guys know what the recommended break-in period is? I haven't had a chance to upgrade the rotors and pads on my car, so I'm not sure what the break-in period would be.
EDIT: I think it would be more than 100 miles, right?
EDIT: I think it would be more than 100 miles, right?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonek9 »</TD></TR><TR><TD CLASS="quote">
You're really not supposed to remove the pins from the caliper. The correct way is to remove the caliper mounting bolts from the knuckle/spindle and then install the pads. It's also a lot easier to do it this way.
</TD></TR></TABLE>
whered you ever get that idea....?
You're really not supposed to remove the pins from the caliper. The correct way is to remove the caliper mounting bolts from the knuckle/spindle and then install the pads. It's also a lot easier to do it this way.
</TD></TR></TABLE>
whered you ever get that idea....?
i dunno about RSX, but no other honda car i know shows removing the caliper completely to replace the brake pads in the factory shop manual.
http://www.honda.co.uk/owner/C...6.pdf
Modified by Tyson at 2:17 PM 7/20/2005
http://www.honda.co.uk/owner/C...6.pdf
Modified by Tyson at 2:17 PM 7/20/2005
somethings obviously not fit or made properly. could be the pads, or the rotors, even the piston might be cocked in the caliper and reading how you repalce the pads backwards by completely removing the caliper, maybe you didnt bolt the caliper straight.
take everything apart, by now itll be obvious if the pad is not square if thats the case. try to put everything together again and see if it helps. simple troubleshooting man. what are you waiting for anyone to say?
take everything apart, by now itll be obvious if the pad is not square if thats the case. try to put everything together again and see if it helps. simple troubleshooting man. what are you waiting for anyone to say?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">i dunno about RSX, but no other honda car i know shows removing the caliper completely to replace the brake pads in the factory shop manual.
http://www.honda.co.uk/owner/C...6.pdf
Modified by Tyson at 2:17 PM 7/20/2005</TD></TR></TABLE>
notice how we replaced the rotors and pads at the same time? you can't do this by leaving the caliper intact as per your pdf file
we did not remove the caliper all the way, only unbolted it (4 bolts) and put it off to the side
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">somethings obviously not fit or made properly. could be the pads, or the rotors, even the piston might be cocked in the caliper and reading how you repalce the pads backwards by completely removing the caliper, maybe you didnt bolt the caliper straight.
take everything apart, by now itll be obvious if the pad is not square if thats the case. try to put everything together again and see if it helps. simple troubleshooting man. what are you waiting for anyone to say? </TD></TR></TABLE>
we have taken everything apart...this isn't a common problem which is why we decided to post here for answers...i'd appreciate it if you could drop the high and mighty attitude...both of us have been working on cars for most of our lives and we have plans to open a shop soon...if this was a common issue or an install problem, we would know it, but it is not...other people have apparently had this problem so we are here looking for them to give us reccomendations on how to fix it, not for people like yourself to tell us to take it off and do what we already have yet another time
if this was simple troubleshooting, it would be fixed by now...this is what we do
http://www.honda.co.uk/owner/C...6.pdf
Modified by Tyson at 2:17 PM 7/20/2005</TD></TR></TABLE>
notice how we replaced the rotors and pads at the same time? you can't do this by leaving the caliper intact as per your pdf file
we did not remove the caliper all the way, only unbolted it (4 bolts) and put it off to the side
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">somethings obviously not fit or made properly. could be the pads, or the rotors, even the piston might be cocked in the caliper and reading how you repalce the pads backwards by completely removing the caliper, maybe you didnt bolt the caliper straight.
take everything apart, by now itll be obvious if the pad is not square if thats the case. try to put everything together again and see if it helps. simple troubleshooting man. what are you waiting for anyone to say? </TD></TR></TABLE>
we have taken everything apart...this isn't a common problem which is why we decided to post here for answers...i'd appreciate it if you could drop the high and mighty attitude...both of us have been working on cars for most of our lives and we have plans to open a shop soon...if this was a common issue or an install problem, we would know it, but it is not...other people have apparently had this problem so we are here looking for them to give us reccomendations on how to fix it, not for people like yourself to tell us to take it off and do what we already have yet another time
if this was simple troubleshooting, it would be fixed by now...this is what we do
The pad is crooked in the caliper, for whatever reason, be it a pin, or something stuck in there. Take the pads out and take a look at them. Do they have clips on them? If so are you putting them on the right side, etc.
I'd wager money that is has nothing to do with rotors.
I'd wager money that is has nothing to do with rotors.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo »</TD></TR><TR><TD CLASS="quote">The pad is crooked in the caliper, for whatever reason, be it a pin, or something stuck in there. Take the pads out and take a look at them. Do they have clips on them? If so are you putting them on the right side, etc.
I'd wager money that is has nothing to do with rotors.</TD></TR></TABLE>these are on the fronts so no clips...all four pads are identical...i just ordered a k-pro so whenever the shipping box gets here (hopefully by tomorrow) my car will be down for a few days...we will check this out then
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris »</TD></TR><TR><TD CLASS="quote">Crud on the hub/backside of the rotor...?</TD></TR></TABLE>
everything is ridiculously clean...we even took them off and recleaned them and made sure not to even get simple fingerprints on the rotors when putting them back
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">if the rotor was not seated properly, the wear would not be even around the rotor.</TD></TR></TABLE>good point...the wear seems to be even around the entire rotor so this is most likely a pad issue...hopefully what el pollo diablo said above is the solution...
I'd wager money that is has nothing to do with rotors.</TD></TR></TABLE>these are on the fronts so no clips...all four pads are identical...i just ordered a k-pro so whenever the shipping box gets here (hopefully by tomorrow) my car will be down for a few days...we will check this out then
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris »</TD></TR><TR><TD CLASS="quote">Crud on the hub/backside of the rotor...?</TD></TR></TABLE>
everything is ridiculously clean...we even took them off and recleaned them and made sure not to even get simple fingerprints on the rotors when putting them back
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson »</TD></TR><TR><TD CLASS="quote">if the rotor was not seated properly, the wear would not be even around the rotor.</TD></TR></TABLE>good point...the wear seems to be even around the entire rotor so this is most likely a pad issue...hopefully what el pollo diablo said above is the solution...
did you torque the 2 bolts to spec? i think they are 17mm if i remember the 2 big bolts that bolts the caliper to the knuckle. 80 foot pounds
Most liekly pad issue. My bro's Hawk HPS do this on his rears of his 94 civic sedan ex abs, but only on one sid; its the passanger outboard pad.
I think it has something to do with how the caliper piston rests on the shims on the backing plate of the pad.
I think it has something to do with how the caliper piston rests on the shims on the backing plate of the pad.



