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

Model 463 as of model year 2013 up to model year 2016

FRONT AXLE FIXED BRAKE CALIPER

Number	Designation		Model 461 (except 461.339) Model 463 up to model year 2019
BA42.10-P-1001-02B	Bleed screw at front axle fixed brake caliper	Nm	14

REAR AXLE FLOATING CALIPER

Number	Designation		Model 461 Model 463 (except 463.270/271/272/273) up to model year 2019	Model 463.270/271/272/273 up to model year 2019
BA42.10-P-1001-17B	Bleed screw on rear axle floating caliper	Nm	15	17

REAR AXLE FLOATING CALIPER

Number	Designation		Model 463 as of model year 2019
BA42.10-P-1001-17B	Bleed screw on rear axle floating caliper	Nm	11

Courtesy of MERCEDES-BENZ USA

Set bleeding pressure on filling and bleeding unit to 2 bar.
Remove caps of bleed screws (A, B, C) from brake calipers (1, 2, 3, 4).
Mount bleeder wrench and bleed hose onto bleed screw (C) on brake caliper (1).
Open bleed screw (C) on brake caliper (1).
1. 5.1 Hydraulic system of brake system was opened for repair purposes.
  When bleeding hydraulic system of brake system, fully depress brake pedal several times in succession until new brake fluid exits free of bubbles at bleed screw (C).
  
  To bleeding 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 can occur due to remaining residual air.
  
  To prevent air from being drawn in, do not pump the brake pedal in a jerking manner but instead release it slowly.
  
  The bleed screw (C) can remain open through the entire pumping procedure.
  
  Required total quantity of brake fluid: approx. 1.5 l.
  
  To renew brake fluid, keep bleed screw (C) open until new brake fluid flows out.
  
  Pumping the brake pedal not required.
  
  Required total quantity of brake fluid: approx. 0.75 l.
2. 5.2 Hydraulic system of brake system was not previously opened for repair purposes.
Close bleed screw (C).
Repeat procedure at brake calipers (2, 3, 4).
The brake caliber numbering (1, 2, 3, 4) indicates the opening sequence.

For vehicles with 2 bleed screws (A, B) each brake caliper must also adhere to the following bleeding sequence:

↓
1. Inner bleed screw (A).
2. Outer bleed screw (B).
Detach bleed hose and bleeder wrench.
Attach caps of bleed screws (A, B, C) to brake calipers (1, 2, 3, 4).