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Home >> Mercedes Benz >> 2019 >> GLC300 Base >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Brakes - Hydraulic & Mechanical Systems - 253 Chassis - 1 Of 2 >> Testing & Repair >> Remove/Install Front Axle Brake Caliper >> Remove/Install Front Axle Brake Caliper - AR42.10-P-0070LWA

Remove/Install Front Axle Brake Caliper - AR42.10-P-0070LWA

Model 205, 213 (except 213.061/261), 253, 293 

4-piston fixed-caliper brake 

Shown on model 205 on Brembo 4-piston fixed-caliper brake, on left side of vehicle 

G12939369Courtesy of MERCEDES-BENZ USA

Shown on model 205 Advics 4-piston fixed-caliper brake, on left side of vehicle 

G12939370Courtesy of MERCEDES-BENZ USA
  Risk of accident  when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work. Before starting the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system. AS42.50-Z-0002-01A 
CAUTION 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 on handling, transport and storage of composite brake disks   AH42.10-P-9406-12LF 
  Notes on threaded connections fastened using a tightening angle-based tightening process   AH00.00-P-0020-01A
  Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
  Brake fluid notes   AH42.50-P-0001-01A 
  Notes on repairs to brake system   AH42.00-P-0003-01A 
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Remove brakepads (2).   AR42.10-P-1610LWA 
2 Remove electrical connector of right front brakepad wear sensor from brake caliper (1). Only when removing right brake caliper (1).
TORQUE SPECIFICATION Model 205, 253
4-piston fixed-caliper brake
Model 293 Bolt, brake wear sensor to brake caliper
*BA42.10-P-1002-10W 
    TORQUE SPECIFICATION Model 213 (except 213.061/261)
4-piston fixed-caliper brake Bolt, brake wear sensor to brake caliper
BA42.10-P-1002-10X
3 Remove brake hose (4). INSTALLATION IMPORTANT : Bleed brake system only after installing brakepads (2). AR42.10-P-0013LW 
4 Unscrew bolts (3) and remove brake caliper (1). INSTALLATION NOTES : The new brake caliper (1) is shipped in prefilled condition and it may not be drained.
Otherwise the brake caliper (1) cannot be vented.
TORQUE SPECIFICATION Model 205, 253
4-piston fixed-caliper brake
Model 293 Bolt, brake caliper/brake caliper support to steering knuckle
*BA42.10-P-1001-10W 
    TORQUE SPECIFICATION Model 213 (except 213.061/261) 4-piston fixed-caliper brake Bolt, brake caliper/brake caliper support to steering knuckle BA42.10-P-1001-10X
INSPECT Check     
5 Check brake caliper (1) and dust boots of brake pistons for leak tightness and damage. In the event of a problem,

replace brake caliper (1).
 
6 Check brake disk for wear and condition.    
REFER TO MAINTENANCE   Model 205
except code B07 (Ceramic brake system)
4-piston fixed-caliper brake
AP42.10-P-4258EW
    Model 213 (except 213.061/261), 253, 293 4-piston fixed-caliper brake
In the event of a problem,

Replace brake disks.
AR42.10-P-0120LWG 
    Model 293 AR42.10-P-0230EQ
    Model 205, 213 (except 213.061/261), 253 4-piston fixed-caliper brake AR42.10-P-0220EWE 
7 Install in the reverse order.    
8 Bleed brake system. Model 205, 253
4-piston fixed-caliper brake Model 293
AR42.10-P-0010LW 
    Model 213 (except 213.061/261)
4-piston fixed-caliper brake
AR42.10-P-0010LWE
9 Operate brake pedal several times until the brakepads (2) make contact with the brake disks. IMPORTANT Firm resistance should be noticeable at the brake pedal.  
INSPECT Check     
10 Check and correct brake fluid level in brake fluid expansion reservoir.    
REFER TO MAINTENANCE   Model 293 AP42.10-P-4210F
REFER TO MAINTENANCE   Model 205 4-piston fixed-caliper brake AP42.10-P-4210CAA
REFER TO MAINTENANCE   Model 213 (except 213.061/261), 253 4-piston fixed-caliper brake AP42.10-P-4210B
11 Perform brake test on test stand.    
REFER TO MAINTENANCE     AP42.00-P-4290BA
FRONT AXLE BRAKE CALIPER

Number Designation Model 205 Model 253
BA42.10-P-1001-10W Bolt, brake caliper/brake caliper support to steering knuckle M12   Nm 120 120
M14 Stage 1 Nm 80 80
Stage 2 ∠° 45 45
FRONT AXLE BRAKE CALIPER

Number Designation Model 293
BA42.10-P-1001-10W Bolt, brake caliper/brake caliper support to steering knuckle M12   Nm -
M14 Stage 1 Nm 80
Stage 2 ∠° 45
FRONT AXLE BRAKE CALIPER

Number Designation Model 213 (except 213.061/261)
BA42.10-P-1001-10X Bolt, brake caliper/brake caliper support to steering knuckle M12   Nm 120
M14 Stage 1 Nm 80
Stage 2 ∠° 45
FRONT AXLE BRAKE CALIPER

Number Designation Model 205 Model 253
BA42.10-P-1002-10W Bolt, brake wear sensor to brake caliper Nm 8 8
FRONT AXLE BRAKE CALIPER

Number Designation Model 293
BA42.10-P-1002-10W Bolt, brake wear sensor to brake caliper Nm 8
FRONT AXLE BRAKE CALIPER

Number Designation Model 213 (except 213.061/261)
BA42.10-P-1002-10X Bolt, brake wear sensor to brake caliper Nm 8