Brake Pads and Discs

[rorf]

New Pagid Brake Pads and Discs squealing

Have recently installed Pagid brake pads and discs on my SL320 V6 and boy do the front brakes squeal. The pads came with shims and I applied copper paste between shims, pads and the caliper pistons. These calipers are Brembos with the damper shim on the outside position. Have now removed all the shims and the copper paste as I note the back of the pads seems to have a rubberized backing and the squeal is now much less noisier but still there, especially when you come up to a slow stop. Get great looks when coming up to robots and stop streets

Has anyone got any suggestions - would really appreciate your coments

 

[Tinkerer]

I had this when I installed new discs and pads a few years back, it did eventually go away (after about 500 miles!). It now judders on heavy braking and I am thinking that all is caused by not seating the discs correctly on the hubs which causes them to wobble and heat the pads & disc up during normal driving giving rise to the squeal on braking. Did you clean the hub face before refitting the new discs?

 

[rorf]

Yes I did clean the hubs spotlessly - luckily I do not have to contend with rust here

 

[rorf]

Have just completed the 10 stop trick (pads and tyres heated up nicely and no fade at all) and the squeal has hopefully disappeared - lets hold thumbs

 

[chanyboi]

I'm about to do the rears on my CLK, whats this 10 stop trick you're on about?

 

[rorf]

The squealing is much less than before so will do the 10 stop again and possibly time will also assist.

Chanyboi the 10 stop is a method of bedding the pads and discs in - find a quiet road, from 100kph apply your brakes firmly to slow down to about 25 kph then accelerate up to 100kph and repeat the process 10 times then drive a few kms to allow the brakes to cool down.

This process heats up the pads and supposedly deposits some of the friction material onto the disc brake. It is important not to come to a full stop with the brakes left on as this will leave a high spot of material on the disc. You should be able to smell the brakes overheating for the process to be effective.