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Home >> Mercedes Benz >> 2007 >> R320 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - 251 Chassis >> Testing & Repair >> Remove/install rear axle brake caliper - AR42.10-P-0080RT

Remove/install rear axle brake caliper - AR42.10-P-0080RT

MODEL 251 

Fig 1: Identifying Rear Axle Brake Caliper Remove/Install Components
G10120997Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
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 Notes on repairs to brake system All models AH42.00-P-0003-01A
1 Lift/jack up vehicle   AR00.60-P-1000RT
2 Remove rear wheels.    
REFER TO MAINTENANCE Remove/install wheels, rotate if necessary AP40.10-P-4050RT
3 Remove brake pads from floating brake caliper   AR42.10-P-0160RT 
4 Detach brake hose (2) from brake caliper (1) NOTES Seal brake hose (2) immediately with stop plugs. The brake fluid expansion reservoir must not run empty otherwise air gets into the brake system.  
REFER TO SYSTEM WIRING DIAGRAMS Notes on installing brake hoses AH42.10-P-9406-01RT
TORQUE SPECIFICATION *BA42.10-P-1001-14A 
SPECIAL TOOL Set of plugs Figure
5 Remove brake caliper (1)    
6 Unscrew bolts (3) and remove brake caliper support (4) INSTALLATION IMPORTANT Replace the bolts (3).  
NOTES Notes on self-locking nuts and bolts All models AH00.00-N-0001-01A
TORQUE SPECIFICATION *BA42.10-P-1002-12L 
7 Install in the reverse order    
8 Bleed brake system   AR42.10-P-0010RT 
BRAKE HOSES, BRAKE LINES

Number Designation Model 251
BA42.10-P-1001-14A Brake line to floating brake caliper Nm 22
REAR AXLE BRAKE CALIPER

Number Designation Model 251
BA42.10-P-1002-12L Self-locking bolt, brake caliper to steering knuckle Stage 1 Nm 60
Stage 2 ∠° 45
Fig 2: Identifying Set Of Stop Plugs (129 589 00 91 00)
G07742724Courtesy of MERCEDES-BENZ USA