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Remove/Install Master Brake Cylinder - AR42.10-P-0300SR

MODEL 453 

G12096921Courtesy 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 Notes on repairs to brake system   AH42.00-P-0003-01A 
NOTES Brake fluid notes   AH42.50-P-0001-01A 
REMOVINGINSTALLING Remove/install     
1 Reduce vacuum in brake booster (4) by depressing brake pedal several times IMPORTANT The engine must be switched off.  
2 Remove brake fluid reservoir   AR42.10-P-0301SR 
3 Identify brake lines (2) at the corresponding connections    
4 Detach brake lines (2) from master brake cylinder (1) and seal connections INSTALLATION IMPORTANT : Observe marking of the brake lines (2).
TORQUE SPECIFICATION Retaining screw, brake line to master brake cylinder
*BA42.10-P-1003-04SR 
SPECIAL TOOL Record plug Figure
5 Unscrew nuts (3) TORQUE SPECIFICATION Nut, brake master cylinder to brake booster *BA42.10-P-1001-05M 
6 Pull out master brake cylinder (1) directly forward out of brake booster (4) NOTES
Do not tilt master brake cylinder (1).
The push rod will otherwise be pressed out of its axial position.
NOTES
Collect brake fluid which runs out with an absorbent rag.
Otherwise the vehicle paint may be damaged.
INSTALLATION IMPORTANT : Replace the seal between the brake booster (4) and master brake cylinder (1).
 
7 Install in the reverse order    
MASTER BRAKE CYLINDER

Number Designation MODEL 453
BA42.10-P-1001-05M Nut, brake master cylinder to brake booster Nm 21
BRAKE LINES, BRAKE HOSES

Number Designation MODEL 453
BA42.10-P-1003-04SR Retaining screw, brake line to master brake cylinder Nm 14
Fig 1: Identifying Record Plug (129 589 00 91 00)
G11065549Courtesy of MERCEDES-BENZ USA