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Remove/Install ETS/ASR/ESP(R) Hydraulic Unit - AR42.40-P-0816LW

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Model 205 

Model 213 

Model 238 

Model 253 

Shown on model 205 

Fig 1: ETS/ASR/ESP(R) Hydraulic Unit Components Location - Model 213 (Shown On Model 205)
G13746489Courtesy of MERCEDES-BENZ USA

Shown on model 205 

G13746490Courtesy 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 
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Brake fluid notes   AH42.50-P-0001-01A 
  Notes on repairs to brake system   AH42.00-P-0003-01A 
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Carry out commissioning of ESP® control unit (N30/4). When installing a new traction system hydraulic unit (A7/3).
IMPORTANT The Electronic Stability Program control unit (N30/4) is part of the traction system hydraulic unit (A7/3).		  
2 Switch off ignition and store transmitter key outside of transmission range (min. 2 m).    
3.1 Remove left and right wiper arm. Model 205 AR82.30-P-6100LW
3.2 Remove cover above brake fluid reservoir. Model 213, 238, 253
INSTALLATION IMPORTANT Install cover only after bleeding the brake system.		  
4 Remove air/water duct under left and right wiper arm. Model 205  
5 Unscrew nuts (1) and place engine fuse and relay module (K40/8) with connected electric lines to one side.    
CLEANING Clean     
6 Clean traction system hydraulic unit (A7/3) in the area of the brake line connections. NOTES Before opening the hydraulic system, the area surrounding the connecting points should be thoroughly cleaned.
Otherwise minute particles of dirt in the hydraulic components can result in malfunctions and total failure of the hydraulic system.
IMPORTANT Only use clean, lint free rags and cleaner free of mineral oil.
Do not use any compressed air for cleaning when the brake system is open. Assembly cleaner		 *BR00.45-Z-1028-04A 
7 Release and disconnect electrical connector (2) from ESP® control unit (N30/4). NOTES It is essential to follow the work instructions for disconnecting the electrical connector (2).
Otherwise the locking mechanism may be damaged.
NOTES The contacts on the electrical connection (2) on the Electronic Stability Program control unit (N30/4) must not be touched, deformed or damaged, and foreign objects, soiling or fluids must not penetrate into the electrical connection (2).
Otherwise, the Electronic Stability Program control unit (N30/4) may be damaged or it may malfunction.		 AR42.45-P-0820-02LW 
8 Mark brake lines (3) relative to the corresponding connection on the traction system hydraulic unit (A7/3).    
9 Detach brake lines (3) from traction system hydraulic unit (A7/3).
Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		   AH00.00-P-0015-01CW
NOTES Seal brake lines (3) and connections on traction system hydraulic unit (A7/3).
Otherwise the traction system hydraulic unit (A7/3) may be damaged by the entry of foreign objects.
INSTALLATION IMPORTANT Route the brake lines (3) such that they are free of tension and do not chafe against adjacent parts. Pay attention to marking.
TORQUE SPECIFICATION Model 205, 253Retaining screw, brake line to hydraulic unit		 *BA42.10-P-1004-04O 
TORQUE SPECIFICATION Model 213
except code B07 (AMG - ceramic brake system)
Model 213 with code B07 (AMG - ceramic brake system)
Model 238Retaining screw, brake line to hydraulic unit		 *BA42.10-P-1004-04P 
SPECIAL TOOL Torque wrench Fig 3
SPECIAL TOOL Record plug Fig 6
SPECIAL TOOL Box wrench bit Fig 4
SPECIAL TOOL Adapter coupling Fig 2
SPECIAL TOOL Box wrench bit Fig 5
10 Remove traction system hydraulic unit (A7/3) with ESP® control unit (N30/4) upwards and out of elastomer bearings (4). INSTALLATION IMPORTANT Make sure that the studs (arrows) of the bracket (5) are correctly seated in the elastomer bearings (4).  
INSPECT Check     
11 Check elastomer bearings (4) for wear and damage. If a problem arises
↓
Replace elastomer bearing (4).		  
12 Remove screw (6) and remove holder (5). When installing a new traction system hydraulic unit (A7/3).
TORQUE SPECIFICATION Screw/bolt, bracket to traction system hydraulic unit		 *BA42.45-P-1001-01M 
13 Install in the reverse order.    
14 Bleed brake system. Model 205, 253 AR42.10-P-0010LW 
Model 213, 238 AR42.10-P-0010LWE 
15 Read out and erase fault memory using the diagnostic system.    
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 205, 213, 253 AD00.00-P-2000-04B
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 238 AD00.00-P-2000-06LWO
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-1004-04O Retaining screw, brake line to hydraulic unit 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-1004-04O Retaining screw, brake line to hydraulic unit 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-1004-04P Retaining screw, brake line to hydraulic unit Nm 16 16
BRAKE LINES, BRAKE HOSES

Number Designation Model 238
BA42.10-P-1004-04P Retaining screw, brake line to hydraulic unit Nm 16
ELECTRONIC STABILITY PROGRAM (ESP®)

Number Designation Model 205 Model 213
BA42.45-P-1001-01M Screw/bolt, bracket to traction system hydraulic unit M8 Nm 18 18
M10 Nm 27 27
ELECTRONIC STABILITY PROGRAM (ESP®)

Number Designation Model 238 Model 253
BA42.45-P-1001-01M Screw/bolt, bracket to traction system hydraulic unit M8 Nm 18 18
M10 Nm - 27
Fig 2: Identifying Adapter Coupling (001 589 00 16 00)
G10251119Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Torque Wrench (001 589 87 21 00)
G07078939Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Box Wrench Bit (140 589 00 03 00)
G07449671Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Box Wrench Bit (000 589 75 03 00)
G07274453Courtesy of MERCEDES-BENZ USA
Fig 6: Identifying Record Plug (129 589 00 91 00)
G09975026Courtesy 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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