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Home >> Mercedes Benz >> 2021 >> GLS450 >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Brakes - Hydraulic & Mechanical System - 167 Chassis (1 Of 2) >> Testing & Repair >> Remove/Install Brake Hose At Rear Axle - AR42.10-P-0023ME

Remove/Install Brake Hose At Rear Axle - AR42.10-P-0023ME

Model 167 

MODIFICATION NOTES

17.05.2019 Brake hose to brake caliper Model 167 BA42.10-P-1001-04J
Fig 1: Brake Hose At Rear Axle Components Location - Model 167
G14790965Courtesy of MERCEDES-BENZ USA
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 
WARNING 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 
Topical note  Notes on externally invisible brake fluid loss   AH42.10-P-9406-02A 
Topical note  Notes on handling, transport and storage of composite brake disks   AH42.10-P-9406-12LF 
Topical note  Notes on repairs to brake system   AH42.00-P-0003-01A 
Topical note  Brake fluid notes   AH42.50-P-0001-01A 
Topical note  Notes on installing brake hoses   AH42.10-P-9406-01A 
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Remove right or left rear wheel and tire assembly.   AR40.10-P-1102ME
2 Remove side underfloor paneling at rear.   AR61.30-P-1001ME
3 Clean area around brake line (6) and brake hose (2) in area of connecting points. NOTES
Before opening the brake system, the area surrounding the connecting point must be clean.
Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the brake system.
 
4 Unscrew union nut (5), remove brake hose (2) from brake line (6) and seal exposed connections using suitable stop plugs. NOTES
Seal connections immediately in order to prevent damage caused by escaping brake fluid. The brake caliper (1) must not run empty Otherwise, the brake caliper (1) must be replaced.
INSTALLATION NOTES
Do not twist brake hose (2) and ensure correct routing.
Otherwise, the brake hose (2) will be damaged.
IMPORTANT Collect escaping brake fluid with suitable container.
INSTALLATION IMPORTANT Make sure that the retaining clamp (7) is seated correctly.
 
    TORQUE SPECIFICATION Brake line to brake hose *BA42.10-P-1002-04J 
    SPECIAL TOOL Box wrench bit Fig 2
    SPECIAL TOOL Record plug Fig 3
5 Unclip brake hose (2) from holder (3).    
6 Unscrew screw (4), remove brake hose (2) and seal exposed connections using suitable stop plugs. NOTES
Seal connections immediately in order to prevent damage caused by escaping brake fluid. The brake caliper (1) must not run empty.
Otherwise, the brake caliper (1) must be replaced.
INSTALLATION NOTES
Do not twist brake hose (2) and ensure correct routing.
Otherwise, the brake hose (2) will be damaged.
IMPORTANT Collect escaping brake fluid with suitable container.
 
    TORQUE SPECIFICATION Brake hose to brake caliper *BA42.10-P-1001-04J 
    SPECIAL TOOL Record plug Fig 3
7 Install in the reverse order.    
  Bleed brake system     
8 Bleed brake system.   AR42.10-P-0010ME 
INSPECT Check     
9 Check brake system for leaks.   AR42.10-P-0100-01ME 
10 Rinse escaped brake fluid with water.    
11 Perform brake test on test stand.    
REFER TO MAINTENANCE     AP42.00-P-4290BA
BRAKE LINES, BRAKE HOSES

Number Designation Model 167
BA42.10-P-1001-04J Brake hose to brake caliper Nm 42
BRAKE LINES, BRAKE HOSES

Number Designation Model 167
BA42.10-P-1002-04J Brake line to brake hose Nm 14
Fig 2: Identifying Box Wrench Bit (140 589 00 03 00)
G13668668Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Record Plug (129 589 00 91 00)
G11971934Courtesy of MERCEDES-BENZ USA