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Home >> Mercedes Benz >> 2021 >> G63 AMG >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Brakes - Hydraulic & Mechanical System - 463 Chassis (2 Of 4) >> Testing & Repair >> Remove/Install Rear-Axle Brake Caliper >> Remove/Install Rear-Axle Brake Caliper - AR42.10-P-0080GW

Remove/Install Rear-Axle Brake Caliper - AR42.10-P-0080GW

Model 463 (except 463.234/255/270/271/274) as of model year 2013 up to model year 2019 

MODIFICATION NOTES

30.11.2017 Self-locking bolt, brake caliper support to rear axle tube Model 463.270/271/272/273 BA42.10-P-1003-17B
Fig 1: Rear-Axle Brake Caliper Components Location - Model 463, 2016 Up To Model Year 2019
G13668542Courtesy of MERCEDES-BENZ USA

Shown on model 463.272 

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
  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
  Brake fluid notes   AH42.50-P-0001-01A
  Notes on repairs to brake system   AH42.00-P-0003-01A
REMOVING
INSTALLING
Remove/install     
1
REFER TO MAINTENANCE
Detach rear complete wheels   AP40.10-P-4050G
2 Detach retaining spring from brake caliper If installed.  
3 Disconnect electrical connection from right rear brake wear sensor (S10/4) If installed.  
4 Detach right rear brake wear sensor (S10/4) from brake caliper (5) If installed and only when replacing brake caliper (5).  
    TORQUE SPECIFICATION Self-locking bolt, brake wear contact sensor to floating caliper *BA42.10-P-1004-17B 
5 Detach brake hose (6) from brake caliper (5) When replacing the brake caliper (5). AR42.10-P-0023GW 
6 Collect any escaping brake fluid using a suitable container    
7 Seal exposed connections with plugs SPECIAL TOOL Record plug Fig 2
8 Pry off and remove dust cap (3) from boots (4) Model 463 (except 463.234/255/270/271/274) as of model year 2013 up to model year 2016  
9 Remove guide pins TORQUE SPECIFICATION Bolt, pilot bushing/guide pin to brake caliper support *BA42.10-P-1002-17B 
10 Remove brake caliper (5) NOTES
Do not subject brake hoses (6) to tensile loads or kink. To relieve stress on the brake hose (6), fasten brake caliper (5) to vehicle free of tension.
Otherwise the brake hose (6) will be damaged.
 
11 Remove brake pads (1) IMPORTANT Only brake pads (1) approved by Mercedes-Benz may be installed, and only as complete sets.
INSTALLATION IMPORTANT Do not apply brake paste or lubricants to the brake linings (1) and brake caliper (5).
 
12 Unscrew screws/bolts securing brake caliper support (7) to rear axle tube and remove brake caliper support (7) TORQUE SPECIFICATION Self-locking bolt, brake caliper support to rear axle tube *BA42.10-P-1003-17B 
CLEAN Clean     
13 Clean contact surfaces of brake pads (1) in brake caliper (5) NOTES
While doing so, do not damage the dust boots on the brake piston. Do not use sharp-edged or pointy tools.
Otherwise the brake caliper (5) or brake caliper support (7) will be damaged.
 
14 Install in the reverse order    
15 Bleed brake system If brake hose (6) was previously removed. AR42.10-P-0010GW 
16 Depress brake pedal several times until brake pads (1) make contact with brake discs (2) and firm resistance is noticeable    
INSPECT Check     
17 Check brake system for leaks If brake hose (6) was previously removed. AR42.10-P-0015GW 
18 Carry out brake test on the test stand    
REAR AXLE FLOATING CALIPER

Number Designation Model 461
Model 463 (except 463.270/271/272/273) up to model year 2019
Model 463.270/271/272/273 up to model year 2019
BA42.10-P-1002-17B Bolt, pilot bushing/guide pin to brake caliper support Nm 30 28
REAR AXLE FLOATING CALIPER

Number Designation Model 461 Model 463 (except 463.270/271/272/273)
up to model year 2019
Model 463.270/271/272/273 up to model year 2019
BA42.10-P-1003-17B Self-locking bolt, brake caliper support to rear axle tube Stage 1 Nm 85 116
Stage 2 - -
REAR AXLE FLOATING CALIPER

Number Designation Model 461 Model 463 (except 463.270/271/272/273)
up to model year 2019
Model 463.270/271/272/273 up to model year 2019
BA42.10-P-1004-17B Self-locking bolt, brake wear contact sensor to floating caliper Nm 30 8
Fig 2: Identifying Record Plug (129 589 00 91 00)
G13668543Courtesy of MERCEDES-BENZ USA