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Home >> Mercedes Benz >> 2021 >> C63 AMG 2D Convertible >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Pneumatic System -- 205 Chassis >> Testing & Repair >> Remove/Install Brake Booster - AR43.10-P-0350LW

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

Model 205 

Model 213 

Model 253 

MODIFICATION NOTES

12.09.2017 Nut, upper struts to firewall Model 205 BA62.30-P-1002-02K
12.09.2017 Nut, upper struts to firewall Model 213 BA62.30-P-1002-02K
G14814909Courtesy of MERCEDES-BENZ USA

Shown on model 205 

G14814910Courtesy of MERCEDES-BENZ USA
CAUTION 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 externally invisible brake fluid loss   AH42.10-P-9406-02A
Topical note  Brake fluid notes   AH42.50-P-0001-01A
Topical note  Notes on repairs to brake system   AH42.00-P-0003-01A
REMOVINGINSTALLING 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) TORQUE SPECIFICATION Nut, upper struts to firewall *BA62.30-P-1002-02K 
    TORQUE SPECIFICATION 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) TORQUE SPECIFICATION Screw/bolt, lower strut to firewall *BA62.30-P-1004-02K 
    TORQUE SPECIFICATION Screw/bolt lower strut to suspension strut tower mounting bracket *BA62.30-P-1003-02K 
7 Cover painted surfaces in the repair area NOTES 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) NOTES 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
SPECIAL TOOL Record plug		 Fig 1
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 Clean     
15 Clean master brake cylinder (6) in area of brake line (12) connections NOTES 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.
IMPORTANT Do not use any compressed-air for cleaning when the brake system is open. Use clean, lint-free rag only.
Assembly cleaner		 *BR00.45-Z-1028-04A 
16 Mark brake lines (12) according to connections    
17 Remove brake lines (12) from master brake cylinder (6) NOTES Seal connection fittings at master brake cylinder (6).
Otherwise foreign objects can enter the master brake cylinder (6) and damage it.		 *BA42.10-P-1003-04P 
    TORQUE SPECIFICATION Model 213 except code B07 (AMG - ceramic brake system)
Model 213 with code B07 (AMG - ceramic brake system) Retaining screw, brake line to master brake cylinder
TORQUE SPECIFICATION Model 205 (except 205.086/087/286/287/387/487) Model 205.086/087/286/287/387/487 Model 253Retaining screw, brake line to master brake cylinder		 *BA42.10-P-1003-04O 
    SPECIAL TOOL Record plug Fig 1
    SPECIAL TOOL Box wrench bit Fig 2
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) TORQUE SPECIFICATION Brake booster to brake pedal *BA43.10-P-1002-01J 
22 Unscrew nuts (14) from BAS brake booster (A7/7) TORQUE SPECIFICATION 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 NOTES Do not deform the brake lines (12). Otherwise the brake system may malfunction.
NOTES 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
INSPECT Check     
27
REFER TO MAINTENANCE		 Carry out brake test on the test stand   AP42.00-P-4290BA
BRAKE LINES, BRAKE HOSES

Number Designation Model 205 (except 205.086/087/286/287/386/387/486/487) Model 205.086/087/286/28 7/386/387/486/487
BA42.10-P-1003-04O Retaining screw, brake line to master brake cylinder Ø 4.75 mm Nm 18 18
Ø 6.00 mm Nm 18 18
Ø 8.00 mm Nm 24 24
BRAKE LINES, BRAKE HOSES

Number Designation Model 253
BA42.10-P-1003-04O Retaining screw, brake line to master brake cylinder Ø 4.75 mm Nm 16
Ø 6.00 mm Nm 16
Ø 8.00 mm Nm -
BRAKE LINES, BRAKE HOSES

Number Designation Model 213 except code B06/B07 Model 213 with code B06/B07
BA42.10-P-1003-04P Retaining screw, brake line to master brake cylinder Nm 16 16
PNEUMATIC BRAKE BOOSTER

Number Designation Model 205 Model 213
BA43.10-P-1001-01J Nut, brake booster carrier to front end Nm 22 22
PNEUMATIC BRAKE BOOSTER

Number Designation Model 253
BA43.10-P-1001-01J Nut, brake booster carrier to front end Nm 22
PNEUMATIC BRAKE BOOSTER

Number Designation Model 205 Model 213
BA43.10-P-1002-01J Brake booster to brake pedal Nm 22 22
PNEUMATIC BRAKE BOOSTER

Number Designation Model 253
BA43.10-P-1002-01J Brake booster to brake pedal Nm 22
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 205 Model 213
BA62.30-P-1001-02K Screw/bolt, upper struts to suspension strut tower mounting bracket Stage 1   Nm 50 35
Stage 2   Nm - 50
Stage 3 Loosen ∠° - 50
Stage 4   Nm - 50
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 253
BA62.30-P-1001-02K Screw/bolt, upper struts to suspension strut tower mounting bracket Stage 1   Nm 50
Stage 2   Nm -
Stage 3 Loosen ∠° -
Stage 4   Nm -
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 205 Model 213
BA62.30-P-1002-02K Nut, upper struts to firewall Nm 35 35
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 253
BA62.30-P-1002-02K Nut, upper struts to firewall Nm 23
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 205 Model 213
BA62.30-P-1003-02K Screw/bolt, lower strut to suspension strut tower mounting bracket Nm 50 50
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 253
BA62.30-P-1003-02K Screw/bolt, lower strut to suspension strut tower mounting bracket Nm 50
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 205 Model 213
BA62.30-P-1004-02K Screw/bolt, lower strut to firewall Nm 23 23
FROND END WITH FRONT REINFORCEMENT

Number Designation Model 253
BA62.30-P-1004-02K Screw/bolt, lower strut to firewall Nm 23
Fig 1: Identifying Record Plug (129 589 00 91 00)
G09975019Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Box Wrench Bit (000 589 75 03 00)
G07274453Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1028-04A Assembly cleaner A 000 986 56 01
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