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

MODEL 220 with CODE (979) Special protection version with CODE (Z07) Top protection 

Fig 1: Identifying Brake Bleeding Operation

	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
	Notes on handling brake fluid		AH42.50-P-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	The brake fluid expansion reservoir must not be completely drained to ensure that air does not enter the system. If the brake fluid reservoir is completely emptied, the entire bleeding procedure must be repeated. The brake system can only be bled with two people attending.
1	Remove wiper arms		AR82.30-P-6100M
2	Remove water repellent	Fastened with 4 expansion rivets.
			Pre-ventilation
3	Switch off ignition
4	Reduce pressure in pressure reservoir	Fully depress brake pedal 30 times.
5	Unscrew brake circuit closure cap (10c) on brake circuit expansion reservoir and fill expansion reservoir when unpressurized	Do not connect the filling and bleeding unit yet.
6	Connect filling and bleeding device to plug of expansion reservoir and switch on	Pay attention to manufacturer's operating instructions. Brake fluid changer, see GOTIS http://gotis.aftersales.daimlerchrysler.com  Bleed pressure approx. 2 bar.
7	Perform the bleed procedure at all brake calipers	Start at the brake caliper with the longest feed line. At each brake caliper allow approx. 80 cm3 brake fluid to escape free of bubbles  . If necessary close the bleed screw once or twice in the process in order to create a short-term pressure build-up to force out any hidden air pockets.
		Bleed screw to brake caliper	*BA42.10-P-1002-10G
		Bleed screw to brake caliper	*BA42.10-P-1002-12G
8	Bleed brake booster hydraulic unit via the brake circuit bleed screw (11b)	Allow approx. 80 cm3 brake fluid to escape free of bubbles  . If necessary close the bleed screw once or twice in the process in order to create a short-term pressure build-up to force out any hidden air pockets.
		Brake circuit bleed screw (11b)	*BA42.50-P-1001-01B
9	Switch off filling and bleeding device and remove cap on brake circuit
	Bleeding booster circuit
1	Unscrew booster circuit closure cap (10d) and fill booster circuit expansion reservoir when not pressurized	Do not connect the filling and bleeding unit yet.
11	Connect filling and bleeding device to booster circuit expansion reservoir and switch on	Pay attention to manufacturer's operating instructions. Bleed pressure approx. 2 bar.
12	Switch on ignition and simultaneously switch off filling and bleeding unit	The booster circuit pump starts up.
13	When the booster circuit pump has been switched off, fully depress the brake pedal approx. 10 times	Booster circuit pump starts up again.
14	After switching off the hydraulic unit booster circuit pump again, bleed via booster circuit bleed screw (11a) with brake pedal pressed down	Carefully open bleed screw (high pressure). Secure bleed hose to prevent it from slipping.
15	Close booster circuit bleed screw (11a) again and slowly ease off brake pedal	Repeat this procedure until brake fluid emerges free of bubbles  (approx. 80 cm3 ).
		Booster circuit bleed screw (11a)	*BA42.50-P-1001-01B
16	Switch off ignition
		Bleeding brake circuit
17	Connect filling and bleeding device to brake circuit plug and switch on	Pay attention to manufacturer's operating instructions. Bleed pressure approx. 2 bar.
18	Switch on ignition	The booster circuit pump starts up. Wait for the pump to cut out: do not switch off the ignition.
19	Bleed brake calipers at the rear axle	Start at the brake caliper with the longest feed line. Exert pressure on brake pedal and open bleed screw while fully depressing the brake pedal. Close bleed screw again and gradually release brake pedal. Repeat this procedure until brake fluid emerges free of bubbles  .
		Bleed screw to brake caliper	*BA42.10-P-1002-12G
20	Bleed brake calipers on front axle	Start at the brake caliper with the longest feed line. Exert pressure on brake pedal and open bleed screw while fully depressing the brake pedal. Close bleed screw again and gradually release brake pedal. Repeat this procedure until brake fluid emerges free of bubbles  (approx. 80 cm 3 ).
		Bleed screw to brake caliper	*BA42.10-P-1002-10G
21	Bleed brake booster hydraulic unit via the brake circuit bleed screw (11b)	Exert pressure on brake pedal and open brake circuit bleed screw (11b) while fully depressing the brake pedal. Close brake circuit bleed screw (11b) again and gradually release brake pedal. Repeat this procedure until brake fluid emerges free of bubbles  (approx. 80 cm3 ).
		Brake circuit bleed screw (11b)	*BA42.50-P-1001-01B
22	Switch off ignition
23	Switch off and disconnect filling and bleeding unit
24	Reduce pressure in reservoir by fully depressing brake pedal up to 30 times	While pressing the brake pedal, check the fluid level in the expansion reservoir; stop pressing brake pedal and extract brake fluid, if necessary.
25	Correct brake fluid level in expansion reservoir of booster circuit	Fill booster circuit up to "MAX" mark. The fluid level may drop below the "MIN" mark when the ignition is switched on.
26	Correct brake fluid level in expansion reservoir of brake circuit	Fill brake circuit to between the "MAX" and "MIN" marks depending on the condition of the brake disks and linings.
27	Screw on cap

FRONT AXLE BRAKE CALIPER

REAR AXLE BRAKE CALIPER

BRAKE SYSTEM HYDRAULICS