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Home >> Mercedes Benz >> 2017 >> GLS450 >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Hydraulic & Mechanical System - 166 Chassis 2 Of 2 >> Testing & Repair >> Remove/Install Electric Parking Brake Actuator Motor - AR42.20-P-0600W

Remove/Install Electric Parking Brake Actuator Motor - AR42.20-P-0600W

Model 166, 172, 292 

Fig 1: Left/Right Electric Parking Brake Actuator Motor Components Location - Model 166 (Shown Model 172.457)
G14268428Courtesy of MERCEDES-BENZ USA

Shown model 172.457 

WARNING 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
Notice Notes on repairs to brake system   AH42.00-P-0003-01A
Notice Notes on self-locking nuts and bolts   AH00.00-P-0001-01KOA
REMOVINGINSTALLING Remove/install     
1 Switch off ignition and keep transmitter key at a location beyond transmitter range (at least 2 m)    
2 Detach corresponding complete wheel    
REFER TO MAINTENANCE   Model 166 AP40.10-P-4050EW
REFER TO MAINTENANCE   Model 172 AP40.10-P-4050V
    Model 292 AR40.10-P-1100GQC
3 Unhook electrical line (3) on retaining frame (1) Model 172  
4 Unclip retaining frame (1) from left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2) Model 172  
5 Disconnect electrical connector (4) on left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2)    
6 Unscrew bolts (2) TORQUE SPECIFICATION Model 166, 292Screw/bolt, actuator motor for parking brake to brake caliper *BA42.10-P-1006-12L 
    TORQUE SPECIFICATION Model 172Bolt, actuator motor to brake caliper *BA42.10-P-1005-12J 
7 Remove left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2) INSTALLATION IMPORTANT Sealing ring (5) must be replaced.  
8 Install in the reverse order    
9 Carry out brake test on the test stand    
REFER TO MAINTENANCE     AP42.00-P-4290BA 
REAR AXLE BRAKE CALIPER

Number Designation Model 172
BA42.10-P-1005-12J Bolt, actuator motor to brake caliper Nm 12
REAR AXLE BRAKE CALIPER

Number Designation Model 166 Model 292
BA42.10-P-1006-12L Screw/bolt, actuator motor for parking brake to brake caliper Nm 12 12