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Home >> Mercedes Benz >> 2011 >> ML450 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - 164 Ml Class - 1 Of 2 >> Testing & Repair >> Remove, install brake line from stepped tandem brake master cylinder to hydraulic unit - AR42.50-P-0002GZ

Remove, install brake line from stepped tandem brake master cylinder to hydraulic unit - AR42.50-P-0002GZ

MODEL 164 

Fig 1: Identifying Stepped Tandem Brake Master Cylinder To Hydraulic Unit Remove/Install Components
G10116664Courtesy of MERCEDES-BENZ USA
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. Pour brake fluid only 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 All models AH42.50-P-0001-01A
NOTES Notes on externally invisible brake fluid loss Model 164 AH42.10-P-9406-02GZ
NOTES Notes on repairs to brake system All models AH42.00-P-0003-01A
1 Open engine hood and raise to vertical position   AR88.40-P-1000GZ
2 Unscrew union nuts from pressure circuit brake line and secondary brake circuit brake line (1) from tandem master brake cylinder (2) 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 Figure
SPECIAL TOOL Set of stop plugs Figure
3 Unclip pressure circuit brake line and secondary brake circuit brake line (7) IMPORTANT Clips (3, 4).  
4 Unscrew union nuts from pressure circuit brake line and secondary brake circuit brake line (5) from hydraulic unit (6) NOTESRisk of confusion!  Before unscrewing, mark the brake line in relation to the appropriate connection.
NOTES Plug brake line and connections with blind plugs to prevent brake fluid flowing out.
INSTALLATION IMPORTANT When screwing on the brake lines, observe markings applied. Do not mix up brake lines.
 
TORQUE SPECIFICATION *BA42.45-P-1002-01J 
SPECIAL TOOL Box wrench bit Figure
SPECIAL TOOL Set of stop plugs Figure
5 Remove pressure circuit brake line and secondary brake circuit brake line (7) NOTESRisk of confusion!  Label brake lines.  
6 Install in the reverse order    
7 Bleed brake system   AR42.10-P-0010GZ 
BRAKE LINES, BRAKE HOSES

Number Designation Model 164.1/8
BA42.10-P-1003-04J Brake pipe to master brake cylinder Nm 18
ELECTRONIC STABILITY PROGRAM (ESP)

Number Designation Model 164.1/8
BA42.45-P-1002-01J Union nut, brake line to ESP hydraulic unit Nm 18
Fig 2: Identifying Box Wrench Bit (140 589 00 03 00)
G07449671Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Set Of Stop Plugs (129 589 00 91 00)
G07742724Courtesy of MERCEDES-BENZ USA