'84 300SD Front Brake Pad Replacement Instructions - PeachParts Mercedes-Benz Forum

braverichard · #1 11-10-2004, 06:59 PM

I can't seem to find the instructions for replacing the front brake pads on the M-B W126 Service CD. Can anyone tell me where to find it on the CD? Or is it just not there? Thanks.

braverichard · #2 11-11-2004, 07:00 AM

Anyone with instructions for replacing these front brake pads? Anyone? Thanks.

#3 11-11-2004, 08:12 AM

Richard:

I don't know specifically about a W126... I have a 97 C230 and the front brakes were the easiest I've ever done.. very straightforward...

[obviously] secure the car on jackstands > there were two bolts secureing the top part of the caliper > remove and rest the caliper on top> the pads were then exposed > remove the old pads > insert the new ones > you'll probablly have to compress the caliper piston back into the caliper >> I used a large C-clamp for this > make sure the brake resivoir top is open and that hte fluid does not overflow.. insert new pads . secure the top part of the caliper > and done.. >> and seat the pads before driving >> pump the brakes..

KCampbell · #4 11-11-2004, 09:34 AM

A couple of little details I would suggest:

Crack open the bleed nipple and attach a hose leading to a bottle/jug before pushing back the calipers. No need to force all that nasty, dirty fluid back through the system, especially if you have ABS. The valve bodies really don't like this stuff.

To remove the pads you will need to remove the retaining clips that pass through a small hole in the end of the caliper pins, make sure the floor around your work area is nice and clean so that you can find this when you drop it.

You will probably need a punch/drift to remove the caliper pins, they tend to take root once in there. When they are out it wouldn't hurt to clean them up a bit before reinstalling.

Take a good look at your flex hoses. Flex them to open up the inside radius of their natural bends - see any cracking in the rubber? These hoses really aren't expensive, and bleeding the system isn't tough, so think about replacing them while you're at it.

Examine the disks for wear. If there is a substantial lip around the edge of the disk it's probably time for a new one. If the disk is coming off you may as well take a look at the wheel bearings and the grease seal while you're in there.

The basic job of replacing pads is pretty straightforward, but it often leads into other opportunities! I started out to replace my pads a week ago and ended up with 4 new disks, two rebuilt calipers up front, all new flex hoses, and of course all new pads.

As a side observation the WorldPac ATE calipers appear to be junk, very sloppy reconditioning on several samples I've seen. Missing plugs, dents from being dropped.

Kevin