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Home >> Mercedes Benz >> 2019 >> GLS450 >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Hydraulic & Mechanical System - 166 Chassis 1 Of 2 >> Testing & Repair >> Remove/Install Brake Disc - AR42.10-P-0220GZ

Remove/Install Brake Disc - AR42.10-P-0220GZ

Model 164, 166, 292 

MODIFICATION NOTES

03.11.2015 Method adapted AS 2.2  
01.06.2015 Method adapted AS 2.2  

Shown on model 164 

Fig 1: Brake Disc Components Location - Model 166 (Shown On Model 164)
G14238105Courtesy of MERCEDES-BENZ USA
DANGER Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective 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 
NOTES Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
REMOVINGINSTALLING Remove/install     
1 Release parking brake Only if removing brake disk (3) at the rear axle.  
2.1 Detach brake caliper (1) or brake caliper support from steering knuckle or wheel carrier on front axle When removing brake disk (3) on front axle.  
    NOTES Do not kink brake hose or subject it to tension and fasten brake caliper (1) free of tension at vehicle.
Otherwise the brake hose will be damaged. IMPORTANT Do not detach brake hose at brake caliper (1).
AR42.10-P-0070GZ 
2.2 Remove brake linings Model 166, 292
Only if removing brake disk (3) at the rear axle.
 
    NOTES Do not kink brake hose or subject it to tension and fasten brake caliper (1) free of tension at vehicle.
Otherwise the brake hose will be damaged. IMPORTANT Do not detach brake hose at brake caliper (1).
AR42.10-P-1700W
3 Reset parking brake on brake adjuster Model 164
Only if removing brake disk (3) at the rear axle.
 
    NOTES If the parking brake drums are run in, turn back the brake adjuster of the parking brake. Otherwise the parking brake shoes may be damaged. AR42.20-P-0540GZ
4 Unscrew bolt (2) iINSTALLATION IMPORTANT Replace bolt (2).  
    TORQUE SPECIFICATION Safety screw, brake disk to rear axle *BA42.10-P-1001-13B 
5 Remove brake disk (3) TORQUE SPECIFICATION Safety screw, brake disk to front axle *BA42.10-P-1001-11A 
INSPECT Check     
6 Check brake disk (3) for wear and condition    
REFER TO MAINTENANCE   Model 164 AP42.10-P-4258GZ
REFER TO MAINTENANCE   Model 166 AP42.10-P-4258GQ
    Model 292 If there are problems

Always replace brake disks in pairs
AR42.10-P-0120A
7 Check parking brake shoe for condition and lining thickness Model 164 Only if removing brake disk (3) at the rear axle. If there are problems

Replace parking brake brake shoes
 
      AR42.20-P-0530GZ
CLEAN Clean     
8 Clean contact surfaces and interference fit of brake disk (3)    
9 Lightly grease interference fit of brake disk (3) Paste, hot lubrication 1 kg, DBL 6879.20 *BR00.45-Z-1005-06A 
10 Install in the reverse order    
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 the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system. AS42.50-Z-0002-01A 
11 Operate brake pedal several times until brake linings (3) rest against brake disks IMPORTANT Firm resistance should be noticeable at the brake pedal.  
12 Check fluid level in the brake fluid reservoir, correct if necessary    
REFER TO MAINTENANCE     AP42.10-P-4210GZ
13 Adjust parking brake Model 164
Only if removing brake disk (3) at the rear axle.
 
      AR42.20-P-0540GZ
14 Check function and effectiveness of brake system    
REFER TO MAINTENANCE     AP42.00-P-4290BA
FRONT AXLE BRAKE DISKS

Number Designation Model 164.1/8 Model 166
BA42.10-P-1001-11A Safety screw, brake disk to front axle Nm 10 10
FRONT AXLE BRAKE DISKS

Number Designation Model 292
BA42.10-P-1001-11A Safety screw, brake disk to front axle Nm 10
REAR AXLE BRAKE DISKS

Number Designation Model 164.1/8 Model 166
BA42.10-P-1001-13B Safety screw, brake disk to rear axle Nm 10 10
REAR AXLE BRAKE DISKS

Number Designation Model 292
BA42.10-P-1001-13B Safety screw, brake disk to rear axle Nm 10
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1005-06A Paste, hot lubrication 1 kg, DBL 6879.20 A 000 989 76 51