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Home >> Mercedes Benz >> 2003 >> C32 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes -- Testing & Repair -- 203 Chassis >> Testing & Repair >> Remove/install brake disc - AR42.10-P-0220P

Remove/install brake disc - AR42.10-P-0220P

MODEL 203, 209.316 /341 /342 /343 /361 /365 /372 /375, 209.376 up to 23.4.04, 209.441 /442 /461 /465 /472 /475, 209.476 up to 23.4.04 

Fig 1: Identifying Brake Disc Remove/Install Components
G04713718
MODIFICATION NOTES

17.12.02 Notes on safety for brake fluid, included for the first time   AS42.50-Z-0001-01A
17.12.02 Check version of pedal assembly, added Step 7.1 BT42.20-P-0510-01A
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  to skin and eyes caused by handling hot or glowing objects. Wear safety gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
NOTES Notes on repairs to brake system   AH42.00-P-0003-01A
1 Remove wheels    
REFER TO MAINTENANCE Remove/install wheels, rotate if necessary   AP40.10-P-4050Z
2 Release parking brake When removing the brake disks (61) on the rear axle  
INSPECT Checking     
3 Check brake lining thickness and brake disks (61) IMPORTANT Only replace brake pads and brake disks (61) in complete sets if necessary.  
REFER TO MAINTENANCE Inspect condition of brake disks Model 203 AP42.10-P-4258BP
REFER TO MAINTENANCE   Model 209 AP42.10-P-4258BQ
REFER TO MAINTENANCE Check brake lining thickness NOTES If the brake pads have worn down to beyond the wear limit, the bar between the sealing groove and dust cap may be damaged; therefore: ↓ AP42.10-P-4253A
    Check brake system for leaks with pressure tester. AR42.10-P-0015A 
4 Remove brake caliper (31) NOTES Do not detach brake hose (51), instead attach brake caliper (31) to vehicle so that it is free of tension. Do not kink or tension brake hose (51), as otherwise it will be damaged.  
  At the front axle:
    Model 209.376 /476 as of 24.4.04,
Model 209.377 /477
AR42.10-P-0070AC
    Model 203 except code 949 EVOLUTION sport package, except code 950 EVOLUTION AMG sport package,
Model 203 except 203.018 /065 /076 /218 /265 /276 /718,
Model 209.316 /341 /342 /343 /361 /365 /441 /442 /461 /465
AR42.10-P-0070P 
    Model 203 with code 949 EVOLUTION sport package, with code 950 EVOLUTION AMG sport package,
Model 203.065 /265 /018 /218 /076 /276 /718,
Model 209.372 /375 /472 /475,
Model 209.376 /476 up to 23.4.04
AR42.10-P-0070PF 
    Model 209.308/ 320/ 354/ 356/ 420/ 454/ 456
At the rear axle:
 
    Model 203,
Model 209.316/ 341/ 342/ 343/ 361/ 365/ 372/ 375/ 441/ 442/ 461/ 465/ 472/ 475
Model 209.376 /476 up to 23.4.04
AR42.10-P-0080P 
    Model 209.376 /476 as of 24.4.04,
Model 209.377 /477
Model 209.308/ 320/ 354/ 356/ 420/ 454/ 456
AR42.10-P-0080AC
5 Unscrew locking bolt (64) and remove brake disk (61) NOTES With run in parking brake drums, turn back slack adjuster of parking brake otherwise parking brake shoes will be damaged:  
    See Adjust parking brake. AR42.20-P-0540A 
    IMPORTANTInstallation:  Always replace brake disks (61) in pairs. Grease the machined seat of the brake disk (61) lightly with MB long-life grease.
IMPORTANTInstallation:  Replace securing bolt (64)
 
    TORQUE SPECIFICATION *BA42.10-P-1001-06A 
    TORQUE SPECIFICATION *BA42.10-P-1002-06A 
    Long-life grease *BR00.45-Z-1001-06A 
6 Install in the reverse order    
INSPECT Checking     
7 Check version of pedal assembly After removing brake disk (61) from rear axle  
REFER TO COMPONENT MODIFICATIONS Parking brake pedal assembly modified   BT42.20-P-0510-01A
8 Adjust parking brake After removing brake disk (61) from rear axle AR42.20-P-0540A 
DANGER 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 engine, actuate brake pedal several times until the pressure is built up and maintained in the brake system. AS42.50-Z-0002-01A
9 Operate the brake pedal several times until brake pads make contact with the brake disks (61) IMPORTANT A firm resistance must be noticeable at the brake pedal.  
INSPECT Checking     
10 Check brake fluid level, correct if necessary    
REFER TO MAINTENANCE Brake system - inspect fluid level   AP42.10-P-4210Z
TORQUE SPECIFICATION BRAKE DISCS, BRAKE COVER PLATE

Number Designation Model 203 Model 209
BA42.10-P-1001-06A Locking bolt of rear axle brake disk Nm 10 10
BA42.10-P-1002-06A Locking bolt of front axle brake disk Nm 10 10
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1001-06A Long-life grease A 000 989 63 51