brake wobble or shudder

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disco dickie

disco dickie

Active Member
Posts
241
Location
napier, new zealand

brake shudder
hi guys, I changed my brake pads and noticed a wobble on the steering wheel when braking from 50 mph.
I took the pads back off and noticed the outer edges of the braking area had a bit of rim to it. it looks as if the rusty part of the disc (the part that the business piece sits in) rubs it slightly. this part is a mil or so higher than the actual disc.I filed the edges of pads slightly, refitted them but the wobble is still there. Any help with this would be appreciated.
 
Was the wobble there before you did the work?

Personally, I change discs when I change the pads. Could be a warped disc and and the pads bounce off the highs and lows as the disc rotates. :D
 
didnt notice it before i changed pads but you dont notice it till you brake from 50 and you cant go over 30 localy. it was only when we drove to aukland when we were on the state highways that i noticed.
I dont really know too much about these things, i just bolt new bits on. but i was thinking it might be warped disks
 
Sometimes brake pads need 'bedding in' it depends on the quality of the pads used I believe. You will have to search what's involved, but it's something like hard braking from 50mph a few times.

I've never had to do it, I only use Genuine parts or EBC pads which I think are a bit better then genuine.
 
Last edited:
I had the same trouble a few weeks ago, I striped the front brakes down disc's were thin replaced them. checked calipers one piston was slightly leaking stipped down calipers relaced pistons and seals new pads now runs and stops perfectly at all speeds.
 
Bought an axle set of discs and pads from paddocks for £70. No bedding in or ineffective time, just worked properly from the installation. Not worth buggering about with anything less or cheaper IMHO.

Dave
 
Make sure the floating parts of your caliper are free as well.Thats the rods on the caliper carrier with the gaitors on that the hydraulic part bolts into .I had one siezed and one free which caused the caliper to rock slightly.It felt like a warped disc.
 
not done my td5 yet but have done loads on motorbikes. i imagine similar.
i pump the brakes to get the pistons out. if doing 2 calipers dont let the pistons come all the way out until both pistons extended. often leaving 1 pad in the caliper will stop the piston coming all the way out. keep an eye on brake fluid level. if using new pistons and seals then all you really need is some brake grease, normally red. then just a case of reconnecting calipers and bleeding.
 
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