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Home >> Mercedes Benz >> 2007 >> R63 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - 251 Chassis >> Maintenance >> Replace brake fluid - AP42.00-P-4280RT

Replace brake fluid - AP42.00-P-4280RT

MODEL 251 

Fig 1: Replacing Brake Fluid
G10121036Courtesy of MERCEDES-BENZ USA
REMOVING Removing     
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
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 All models AH42.50-P-0001-01A
NOTES Notes on repairs to brake system All models AH42.00-P-0003-01A
1 Open engine hood and raise to vertical position    
REFER TO TESTING & REPAIR Opening engine hood, moving to upright position and closing AR88.40-P-1000RT
2 Unscrew cap (11) from brake fluid reservoir (10)    
3 Pump brake fluid out of the brake fluid reservoir (10)    
4 Pour in new brake fluid up to the "MAX" mark on the brake fluid reservoir (10) FLUID SPECIFICATION Brake fluid *BF42.10-P-1001-01H 
5 Connect brake fluid changing unit to brake fluid reservoir (10) IMPORTANT Follow the operating instructions for the brake fluid changing unit.
Brake fluid change unit
 
6 Raise vehicle with vehicle lift    
REFER TO TESTING & REPAIR Lift/jack up vehicle AR00.60-P-1000RT
  Replace     
7 Replace brake fluid IMPORTANT The new brake fluid must escape via the bleed hose free of bubbles.  
REFER TO TESTING & REPAIR Bleed brake system AR42.10-P-0010RT 
TORQUE SPECIFICATION *BA42.10-P-1001-10L 
TORQUE SPECIFICATION *BA42.10-P-1001-12L 
INSTALLING Install     
8 Lower vehicle    
REFER TO TESTING & REPAIR Lift/jack up vehicle AR00.60-P-1000RT
9 Detach brake fluid changing unit from brake fluid reservoir (10) Brake fluid change unit  
10 Correct fluid level in brake fluid reservoir (10) FLUID SPECIFICATION Brake fluid *BF42.10-P-1001-01H 
11 Screw cap (11) onto brake fluid reservoir (10)    
12 Close engine hood    
REFER TO TESTING & REPAIR Opening engine hood, moving to upright position and closing AR88.40-P-1000RT
FRONT AXLE BRAKE CALIPER

Number Designation Model 251 except 251.077/177 Model 251.077/177
BA42.10-P-1001-10L Bleed screw to brake caliper Nm 18 18
REAR AXLE BRAKE CALIPER

Number Designation Model 251
BA42.10-P-1001-12L Bleed screw to brake caliper Nm 7
BRAKE FLUID

Number Designation Model 251
BF42.10-P-1001-01H Brake fluid Filling capacity Liters ≈ 0, 8
Specifications for Operating Fluids Specification DOT 4. See GENERAL BRAKE FLUID
  Specification MB 331.0 brake fluid A 000 989 08 07