Bedding in new brakes

Rich H · Post by **Rich H** » Mon Feb 05, 2007 9:22 pm

Discs will get some heat cycles in them and the old pads will wear to the discs quickly, then bed in the new pads to the freshly bedded discs. I read it in practical performance car and it sounded convincing.

Will look it out see if it says why....

mckeann · Post by **mckeann** » Mon Feb 05, 2007 9:42 pm

yup, i heard that too. when i replaced discs and pads at the same time, my new pads lasted next to no time, so it must work.

Tom · Post by **Tom** » Tue Feb 06, 2007 1:31 pm

read through the service notes and it says you can change the rear discs without removing the calipers. just remove the rear pads. i take it this is assuming that the disc hasn't rusted onto the hub which it will have and need a hammer to remove......

anyone actually managed to get a back disc off without removing caliper??

mac · Post by **mac** » Tue Feb 06, 2007 2:34 pm

I've never been able to change the rear pads without freeing off the top caliper mount - but once that's off it's easy to change the disc

HTH

Mac

alicrozier · Post by **alicrozier** » Tue Feb 06, 2007 3:19 pm

mac wrote:I've never been able to change the rear pads without freeing off the top caliper mount - but once that's off it's easy to change the disc

HTH

Mac

Is that not because you need access (past the disc) to wind back the piston? If you're also changing the discs maybe you don't need to move the caliper?

Oh, and ref:
http://elise-faq.info/index.php?title=Pad_change

mac · Post by **mac** » Tue Feb 06, 2007 3:24 pm

But if your changing both disc & pad then the combined thickness would be greater than that of what you have removed - so you would need to wind back.

Even if it's just the disc the new one should be thicker than the one you are replacing.

Mac

PS: Go on tell us what the weather is like with you?

alicrozier · Post by **alicrozier** » Tue Feb 06, 2007 5:46 pm

Yeah, but you can wind back without moving the caliper 'cos the disc isn't there!

Hamatan season here so dry but hazy (dust blown from the sahara). Still pretty warm though...34 deg...

Rich H · Post by **Rich H** » Tue Feb 06, 2007 6:41 pm

My disc just sliped out when I removed the pads. As mac says you'd have to wind it back a bit anyway. I thought you could get the outer pad out then the disc then the inner pad, but I can't remember....

Tom · Post by **Tom** » Tue Feb 06, 2007 11:15 pm

sweet, will try

Victor Meldrew · Post by **Victor Meldrew** » Thu Feb 08, 2007 1:14 am

shooomer wrote:
RICHARDHUMBLE wrote: I thought you could get the outer pad out then the disc then the inner pad, but I can't remember....

What he says is right... but I'd already undone the bolt before I remembered that...

Oh... are they meant to smoke after you do the stop from 70ish to zero on the bedding in sequence??? stopped the judder though after I did that so must work ok.

Only worry is that the pax side wheel locks up early compared to the other one. Hopefully it is just tyre pressure imbalance but have not had a chance to check them yet. Very impressed so far with the pagids.

Michael · Post by **Michael** » Thu Feb 08, 2007 1:26 am

Bit late with this but I think a really easy uniform predictable way of bedding brakes would be to drive on a stretch of motorway with your left foot on the pedal for 3min intervals instead of the emergency stop and then foot held on the pedal malarchy.

Just be warned of the weird looks as you overtake people with your brake lights on