Mercedes W123 Brake Caliper, Front Replacement - IFixit

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Introduction

The calipers on your car are what push the pads in to the rotors when you hit the brakes. Pretty important stuff! They are exposed to substantial heat, brake dust, dirt, water, and in certain climates road salt.

So it's important to check them when you replace your pads and pull them off to clean them, rebuild them, or replace them if needed.

Please note that when working with brake fluid that it is extremely corrosive to paint. If it gets any painted part on your vehicle be sure to rinse it thoroughly.

As you proceed through this guide be sure to collect any fluids in a suitable drip pan and also to dispose of old fluids properly.

What you need

1. Step 1 Drain the brake fluid

   

   • You will need to remove your wheels before you start.

   • Before beginning on removal of the calipers you should drain the brake fluid from them.

   • This is done through the bleed screw on each caliper.

   • Loosen this and let it drain in to a proper drain pan.

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