Bleed brake system - AR42.10-P-0010RT

MODEL 251 

Fig 1: Identifying Bleed Brake System Components - Shown On Vehicle With Airmatic

Courtesy of MERCEDES-BENZ USA

Shown on vehicle with AIRmatic (air suspension with level adjustment and adaptive damping system ADS), code 489 

	Bleeding
	Risk of poisoning  caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes.	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
	Brake fluid notes	All models	AH42.50-P-0001-01A
	Notes on repairs to brake system	All models	AH42.00-P-0003-01A
	Notes on externally invisible brake fluid loss		AH42.10-P-9406-02RT
1	Open engine hood and raise to vertical position		AR88.40-P-1000RT
2	Unscrew cap (5) from brake fluid reservoir (6)
3	Connect filling and bleeding device	Pay attention to manufacturer's operating instructions. Bleeding pressure must be 2 bar.
		Brake fluid Brake fluid change unit	*BF42.10-P-1001-01H
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
4	Lift/jack up vehicle		AR00.60-P-1000RT
5	Adjust bleeding pressure on filling and bleeding unit to 2 bar
6	Remove breather dust caps
7	Connect hose of bleed bottle on bleed screw on right rear axle floating brake caliper (1)
8	Open bleed screw on right rear axle floating brake caliper (1) and allow 80 cm3 of brake fluid to flow out free of bubbles  , then tighten to the correct torque	Bleed screw to brake caliper	*BA42.10-P-1001-12L
9	Repeat bleeding process at the other floating brake calipers	Sequence when bleeding: Bleed screw on right rear axle floating brake caliper, bleed screw on left rear axle floating brake caliper, bleed screw on right front axle floating brake caliper, bleed screw on left front axle floating brake caliper.
		Bleed screw to brake caliper	*BA42.10-P-1001-10L
		Bleed screw to brake caliper	*BA42.10-P-1001-12L
10	Detach filling/bleeding device
11	Attach bleeder dust caps and screw cap
	Checking
12	Check fluid level in brake fluid reservoir, and correct if necessary	Brake fluid	*BF42.10-P-1001-01H
13	Check brake system for leaks		AR42.10-P-0100-01RT
14	Check fluid level in the brake system
	Brake system - inspect fluid level		AP42.10-P-4210RT