Carrying Out Bleeding Operation - AR42.10-P-0010-02MFA

Model 118, 167, 177, 243, 247 

	Risk of poisoning  from swallowing brake fluid. Risk of injury  from skin and eye contact with brake fluid	Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.	AS42.50-Z-0001-01A
Topical note	Notes on handling, transport and storage of ceramic brake disks		AH42.10-P-9406-13A
Topical note	Notes on handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
Topical note	Notes on repairs to brake system		AH42.00-P-0003-01A
Topical note	Brake fluid notes		AH42.50-P-0001-01A
	000 588 01 82 00 Filling unit		WS25.00-P-0016B

Courtesy of MERCEDES-BENZ USA

1. Adjust bleed pressure at filling unit to 2.0 bar.
2. Remove caps for bleed screws on brake calipers (1, 2, 3, 4).
3. Connect bleed hose of bleed bottle (7) to bleed screw of brake caliper (1).
4. Open bleed screw.
5. 1. To bleed the hydraulic system of the brake system after the hydraulic system has been opened for repair purposes.

      Fully depress brake pedal several times in succession until new brake fluid exits free of bubbles at the bleed screw.

      To bleed the brake system correctly it is absolutely essential to pump the brake pedal throughout the entire bleeding process.

      Otherwise, brake system malfunctions and a failure of the brake system may occur due to remaining residual air.

   2. When replacing the brake fluid, if the hydraulic system for the brake system was not opened beforehand for repair purposes.

      Keep bleed screw open until the brake fluid flows out.

      Pumping of the brake pedal is not necessary.

      Required total quantity of brake fluid: Approx. 0.75 l.

6. Close bleed screw. Model 167

   Model 118 with code U54 (Compound-link axle)

   Model 118 with code U55 (Multi-link axle)

   Model 177 with code U54 (Compound-link axle)

   Model 177 with code U55 (Multi-link axle)

   Model 243

   Model 247 with code U54 (Compound-link axle)

   Model 247 with code U55 (Multi-link axle)

7. Disconnect bleed hose of bleed bottle (7) from bleed screw (1) of brake caliper.

   Do not pump the brake pedal in a jerking manner but instead release it slowly.

   Otherwise, air will be drawn in.

   The bleed screw can remain open throughout the entire pumping procedure. Total quantity of brake fluid required: approx. 1.5 l.

   Aid of helper required.

8. Repeat operation steps 3 to 7 successively on the brake calipers (2 Model 167

   Model 118 with code U54 (Compound-link axle)

   Model 118 with code U55 (Multi-link axle)

   Model 177 with code U54 (Compound-link axle)

   Model 177 with code U55 (Multi-link axle)

   Model 243

   Model 247 with code U54 (Compound-link axle)

   Model 247 with code U55 (Multi-link axle)

   3 Model 167

   Model 118

   Model 177

   Model 243

   Model 247

   and 4 Model 118

   Model 177

   Model 243

   Model 247

   Model 167 )

9. Fit caps for bleed screws on brake calipers (1, 2, 3, 4).