300E brakes sqeeking? - PeachParts Mercedes-Benz Forum

04 Diesel · #1 06-15-2009, 12:17 PM

I have a 1986 300E that the back pasanger side brakes squeek untill I put pressure on the brake peddle.The pads are in great shape, could it be something else? When I am driving down the road you here squeek squeek squeek squeek, put alittle pressure on the brake peddle and it stops. Any ideas?

pawoSD · #2 06-15-2009, 12:33 PM

Rust on the rotors, or worn pads. Take off the wheels and inspect them!

04 Diesel · #3 06-15-2009, 12:37 PM

Quote:

Originally Posted by pawoSD

Rust on the rotors, or worn pads. Take off the wheels and inspect them!

There is no rust, what parts would be worn?

TX76513 · #4 06-15-2009, 12:39 PM

When the pads where replaced did you put shims or brake goop on the pads?

pawoSD · #5 06-15-2009, 12:39 PM

Quote:

Originally Posted by 04 Diesel

There is no rust, what parts would be worn?

Did you check both sides of the rotors? Sometimes a caliper piston can lock up and then one side of the rotor rusts....I just had this happen.

I agree, if there was no goop put behind the pads, then they may squeak.

04 Diesel · #6 06-15-2009, 12:44 PM

Quote:

Originally Posted by TX76513

When the pads where replaced did you put shims or brake goop on the pads?

The p.o. had shoes put on, so I dont know. What are you talking about when you say brake goop?

brewtoo · #7 06-15-2009, 01:03 PM

Brake goop is something (paste or spray) that you put on the BACK side of the pads to prevent squeaking.

04 Diesel · #8 06-15-2009, 01:06 PM

Quote:

Originally Posted by brewtoo

Brake goop is something (paste or spray) that you put on the BACK side of the pads to prevent squeaking.

Can I use grease? Just so I dont get it in the brakes.

TX76513 · #9 06-15-2009, 01:15 PM

Quote:

Originally Posted by 04 Diesel

Can I use grease? Just so I dont get it in the brakes.

No grease or oils This is sort of a plastic coating that dries and keeps the pads from vibrating, which is your squeal.

04 Diesel · #10 06-15-2009, 01:20 PM

Thanks, I will get some today.

04 Diesel · #11 06-15-2009, 03:46 PM

Quote:

Originally Posted by TX76513

No grease or oils This is sort of a plastic coating that dries and keeps the pads from vibrating, which is your squeal.

I got the same stuff from Autozone today, I guess I have to take the rotors off to put this stuff on?

TX76513 · #12 06-15-2009, 03:48 PM

Quote:

Originally Posted by 04 Diesel

I got the same stuff from Autozone today, I guess I have to take the rotors off to put this stuff on?

I have not done brakes on your car but would think all should be pretty close. Compress pistons, knock out retaining pin, remove clips and pads. Goop them up, allow to dry and reverse.

04 Diesel · #13 06-15-2009, 04:07 PM

Quote:

Originally Posted by TX76513

I have not done brakes on your car but would think all should be pretty close. Compress pistons, knock out retaining pin, remove clips and pads. Goop them up, allow to dry and reverse.

How do you compress the pistons without taking caliper off? Do you have a picture of the pin? Sorry, I allways take the caliper off to change brakes, not sure how to do your way.