Remove/Install Brake Booster - AR43.10-P-0350LW

Model 205 

Model 213 

Model 253 

Courtesy of MERCEDES-BENZ USA

Shown on model 205 

Courtesy of MERCEDES-BENZ USA

	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
	Notes on externally invisible brake fluid loss		AH42.10-P-9406-02A
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Remove/install
1	Reduce vacuum in BAS brake booster (A7/7) by depressing brake pedal several times
2	Remove left and right wiper arms		AR82.30-P-6100LW
3	Remove cover on left and right suspension strut tower in engine compartment
4	Remove air-water-duct under the wiper arms	Model 213 Model 253
5	Remove strut (10)	Nut, upper struts to firewall	*BA62.30-P-1002-02K
		Screw/bolt, upper struts to suspension strut tower mounting bracket	*BA62.30-P-1001-02K
6	Remove bolts (2, 8) and take off strut (3)	Screw/bolt, lower strut to firewall	*BA62.30-P-1004-02K
		Screw/bolt, lower strut to suspension strut tower mounting bracket	*BA62.30-P-1003-02K
7	Cover painted surfaces in the repair area	Protect painted surfaces from brake fluid. Damage can otherwise be caused by escaping brake fluid.
8	Unscrew cap (4) and remove sieve from brake fluid reservoir (5)	Before opening, clean the areas surrounding the cap (4) thoroughly. Otherwise minute particles of dirt in the hydraulic components can result in malfunctions and total failure of the brake system.
		Assembly cleaner	*BR00.45-Z-1028-04A
9	Suction off brake fluid from the brake fluid reservoir (5)
10	Detach hose from brake fluid reservoir (5) and seal openings using suitable stop plugs	Model 205, 213, 253 with transmission 716
		Record plug	Fig 2
11	Seal brake fluid reservoir (5)
12	Disconnect electrical connection (9) from brake fluid level switch
13	Unscrew nuts (7) of engine fuse and relay module (K40/8)
14	Place engine fuse and relay module (K40/8) with connected lines to one side
	Clean
15	Clean master brake cylinder (6) in area of brake line (12) connections	Before opening the brake system, the area around the separating point must be cleaned thoroughly. Otherwise minute particles of dirt in the hydraulic components can result in malfunctions and total failure of the brake system. Do not use any compressed-air for cleaning when the brake system is open. Use clean, lint-free rag only.
		Assembly cleaner	B1R00.45-Z-1028-04A
16	Mark brake lines (12) according to connections
17	Remove brake lines (12) from master brake cylinder (6)	Seal connection fittings at master brake cylinder (6). Otherwise foreign objects can enter the master brake cylinder (6) and damage it.
		Model 213 except code B07 (Ceramic brake system) Model 213 with code B07 (Ceramic brake system) Retaining screw, brake line to master brake cylinder	BA42.10-P-1003-04P
		Model 205 (except 205.086/087/286/287/387/487) Model 205.086/087/286/287/387/487 Model 253 Retaining screw, brake line to master brake cylinder	*BA42.10-P-1003-04O
		Record plug	Fig 2
		Box wrench bit	Fig 1
18	Pull vacuum line (13) out of brake booster (A7/7)
19	Detach electrical connection (11) from brake vacuum sensor (B64/1)
20	Remove panel under instrument panel on driver side	Model 213	AR68.10-P-1501LWE
		Model 205 Model 253	AR68.10-P-1500LW
21	Remove guide pin (15) from brake pedal (16)	Brake booster to brake pedal	*BA43.10-P-1002-01J
22	Unscrew nuts (14) from BAS brake booster (A7/7)	Nut, brake booster carrier to front end	*BA43.10-P-1001-01J
23	Push brake lines (12) carefully to one side and remove BAS brake booster (A7/7) from engine compartment	Do not deform the brake lines (12). Otherwise the brake system may malfunction. Do not damage boot during removal/installation of BAS brake booster (A7/7). Otherwise the BAS brake booster (A7/7) may malfunction.
24	Remove master brake cylinder (6)	When replacing the BAS brake booster (A7/7).
			AR42.10-P-0300LW
25	Install in the reverse order
26	Bleed brake system	Model 213	AR42.10-P-0010LWE
		Model 205 Model 253	AR42.10-P-0010LW
	Check
27	Carry out brake test on the test stand
			AP42.00-P-4290BA

Fig 1: Identifying Box Wrench Bit (000 589 75 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA