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Home >> Mercedes Benz >> 2007 >> R63 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - 251 Chassis >> Testing & Repair >> Remove/install front axle brake caliper - AR42.10-P-0070RT

Remove/install front axle brake caliper - AR42.10-P-0070RT

MODEL 251 

Fig 1: Identifying Front Axle Brake Caliper Remove/Install Components
G10120995Courtesy 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 self-locking nuts and bolts All models AH00.00-N-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 the front 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 (3) from floating brake caliper (1) NOTES Seal brake hose (3) immediately with stop plugs. The brake fluid expansion reservoir must not run empty otherwise air gets into the brake system.  
IMPORTANT Notes on installing brake hoses AH42.10-P-9406-01RT
TORQUE SPECIFICATION Brake line to floating brake caliper *BA42.10-P-1001-14A 
SPECIAL TOOL Set of plugs Figure
5 Detach electrical feed line of front brake pad contact sensor (2) from floating brake caliper (1) INSTALLATION IMPORTANT Replace bolt.  
IMPORTANT Notes on installing brake pad wear sensor contact sensors AH42.10-P-0003-01RT
6 Remove floating brake caliper (1)    
7 Unscrew bolts (4) and remove floating caliper carrier (5) INSTALLATION IMPORTANT Install new bolts (4).  
IMPORTANT Self-locking bolt, caliper support to steering knuckle *BA42.10-P-1003-10L 
8 Install in the reverse order    
9 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
FRONT AXLE BRAKE CALIPER

Number Designation Model 251 except 251.077/177 Model 251.077/177
BA42.10-P-1003-10L Self-locking bolt, caliper support to steering knuckle Stage 1 Nm 80 80
Stage 2 ∠° 45 45
Fig 2: Identifying Set Of Stop Plugs (129 589 00 91 00)
G07742724Courtesy of MERCEDES-BENZ USA