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Remove/install brake booster - AR43.10-P-0350GZ

MODEL 164 

Fig 1: Identifying Brake Booster Remove/Install Component (1 Of 4)
G10116687Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Brake Booster Remove/Install Component (2 Of 4)
G10116688Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Brake Booster Remove/Install Component (3 Of 4)
G10116689Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Brake Booster Remove/Install Component (4 Of 4)
G10116690Courtesy of MERCEDES-BENZ USA
MODIFICATION NOTES

1.9.10 "Perform brake test on test bench" reference changed Test sequence augmented/revised  
REMOVINGINSTALLING Remove/install     
DANGER 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 Brake fluid notes   AH42.50-P-0001-01A
NOTES Notes on repairs to brake system   AH42.00-P-0003-01A
NOTES Notes on externally invisible brake fluid loss   AH42.10-P-9406-02GZ
1 Move wiper arms to end position    
2 Turn key in ignition lock to position "0" IMPORTANT On vehicles with Keyless-Go, code 889: Press keyless go start/stop button repeatedly until ignition is switched off  
3 Eliminate vacuum in BAS brake booster (A7/7) IMPORTANT Reduce vacuum by depressing the brake pedal several times.  
4 Remove left cover below dashboard   AR68.10-P-1500GZ
5 Remove securing clamp (1) and pull out pin (2).    
6 Unscrew nuts (3) of BAS brake booster (A7/7) TORQUE SPECIFICATION *BA43.10-P-1001-01G 
7 Open engine hood and raise to vertical position   AR88.40-P-1000GZ
8 Detach rubber seal (4) in the area of the section, left partition wall (7)    
9 Remove bolt (5)    
10 Unclip left partition wall section (7) from clips (6).    
DANGER Risk of injury caused by moving parts that can pinch, crush or, in extreme cases even sever extremities.  Always remove ignition key when working on windshield wiper mechanism. AS82.30-Z-0001-01A
11 Remove wiper arms   AR82.30-P-6100GZ
12 Remove water deflector over wiper system   AR83.25-P-1406GZ
13 Disconnect release switch connector (8).    
14 Disconnect BAS diaphragm travel sensor connector (9)    
15 Remove wiper link rod (10).    
16 Unscrew union nuts, pressure circuit and secondary brake circuit (11) from tandem master brake cylinder NOTESRisk of confusion!  Before unscrewing, mark the brake line in relation to the appropriate connection.
NOTES Plug connections with blind plugs to prevent brake fluid flowing out.
 
TORQUE SPECIFICATION *BA42.10-P-1003-04J 
SPECIAL TOOL Box wrench bit Fig 5
SPECIAL TOOL Set of stop plugs Fig 6
17 Disconnect connector from brake fluid reservoir (12).    
18 Disconnect vacuum line (13) from BAS brake booster (A7/7).    
19 Disconnect EPS pressure sensor connector (14).    
20 Take out BAS brake booster (A7/7) INSTALLATION NOTES Do not damage boot when installing BAS brake booster (A7/7) as this will cause leaks.
INSTALLATION IMPORTANT Install new gasket
 
21 Unscrew nuts (17) from tandem brake master cylinder. IMPORTANT Check rear primary piston of tandem brake master cylinder for leaks.
INSTALLATION IMPORTANT Install new O-ring.
 
TORQUE SPECIFICATION *BA42.10-P-1001-05H 
22 Install in the reverse order    
23 Bleed brake system   AR42.10-P-0010GZ
INSPECT Checking     
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.
AS00.00-Z-0005-01A
24 Check brake system for leaks   AR42.10-P-0100-01GZ
DANGER Risk of death  caused by limbs being caught  or crushed  by rotating parts when performing tests on the brake test stand Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY STOP switch to shut down test stand. AS42.00-Z-0001-01A
25 Carry out brake test on the test stand   AP42.00-P-4290BA
BRAKE BOOSTER

Number Designation Model 164.1/8 outer model 164.195
BA43.10-P-1001-01G Nut, brake booster carrier to front end Nm 20
BRAKE LINES, BRAKE HOSES

Number Designation Model 164.1/8
BA42.10-P-1003-04J Brake pipe to master brake cylinder Nm 18
MASTER BRAKE CYLINDER

Number Designation Model 164.1/8
BA42.10-P-1001-05H Nut, brake master cylinder to brake booster Nm 10
Fig 5: Identifying Box Wrench Bit (140 589 00 03 00)
G07449671Courtesy of MERCEDES-BENZ USA
Fig 6: Identifying Set Of Stop Plugs (129 589 00 91 00)
G07473018Courtesy of MERCEDES-BENZ USA