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Home >> Mercedes Benz >> 2021 >> S560 Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Hydraulic & Mechanical System - 217 Chassis (1 Of 2) >> Testing & Repair >> Test Brake System With Pressure Tester For Leaks - AR42.10-P-0015CW

Test Brake System With Pressure Tester For Leaks - AR42.10-P-0015CW

Model 172, 204, 217, 222, 231 

Shown on model 204 

G15347943Courtesy of MERCEDES-BENZ USA
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 
Notice Notes on externally invisible brake fluid loss   AH42.10-P-9406-02A 
Notice Notes on repairs to brake system   AH42.00-P-0003-01A 
Notice Brake fluid notes   AH42.50-P-0001-01A 
INSPECT Check     
1 Deactivate easy entry and exit feature for steering wheel Model 172, 204, 222, 231 with code 275 (Memory Package (driver's seat, steering column and mirror))
Model 217		  
Model 172 with code 275 (Memory Package (driver's seat, steering column and mirror)) AR54.30-P-1000-02W
2 Open engine hood and raise to vertical position Model 172, 204, 217, 222, 231  
Model 172 AR88.40-P-1000V
Model 204 AR88.40-P-1000EW
3 Clean area around cap on brake fluid expansion reservoir (1)    
4 Unscrew cap for brake fluid expansion reservoir (1)    
5 Connect filler/bleeder unit to brake fluid expansion reservoir (1)    
REFER TO SPECIAL TOOLS 000 588 01 82 00 Filling unit IMPORTANT Pay attention to manufacturer's operating instructions. WS25.00-P-0016B
6 Remove the bleed screw on the left front brake caliper (2) and connect pressure tester (3)    
REFER TO SPECIAL TOOLS 000 588 07 21 00 Test equipment NOTES Pressure testers (3) for hydraulic fluid systems must not be used for systems with brake fluid.
Otherwise, the brake fluid will be mixed with mineral oil, which can cause brake failure.
NOTES
Pay attention to manufacturer's operating instructions.
Otherwise, measurement errors may arise due to incorrect operation.		 WS42.00-P-0014B
7 Bleed pressure tester (3)    
8 Switch off filling and bleeding unit and vent pressure    
HIGH PRESSURE TEST Measure using pointer device     
WARNING Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
9 Allow the engine to run at moderate speed and release the accelerator pedal suddenly IMPORTANT In order to produce the highest possible vacuum in the BAS brake booster (A7/7).  
10 Immediately press down brake pedal as far as possible and insert brake pedal jack (010) with adapter between brake pedal and driver seat NOTES Cover brake pedal and driver seat in contact area of brake pedal jack and adapter.
Otherwise the brake pedal or the driver seat may be damaged.		  
    SPECIAL TOOL Adapter for brake pedal winch Fig 2
    SPECIAL TOOL Pedal arrester Fig 1
11 Read off and note brake pressure on high-pressure gauge of pressure tester (3)    
12 Read off and note brake pressure again after 5 minutes on the high-pressure gauge of pressure tester (3) IMPORTANT During the 5 min. duration of the test, the brake pressure may not drop more than 5 %.  
HIGH PRESSURE TEST Measure using pointer device     
13 Switch off engine and remove brake pedal jack (010) with adapter    
14 Push down brake pedal several times IMPORTANT In order to reduce the vacuum in the BAS brake booster (A7/7).  
15 Press down brake pedal as far as possible and insert brake pedal jack (010) with adapter between brake pedal and driver seat NOTES Cover brake pedal and driver seat in contact area of brake pedal jack and adapter.
Otherwise the brake pedal or the driver seat may be damaged.		  
    SPECIAL TOOL Adapter for brake pedal winch Fig 2
    SPECIAL TOOL Pedal arrester Fig 1
16 Slowly turn back brake pedal jack (010) until the low-pressure gauge on the pressure tester (3) displays a brake pressure of approx. 3 bar    
17 Read off and note the brake pressure after 2 minutes on the low pressure gauge of pressure tester (3) IMPORTANT The brake pressure must not drop during the 2 min. duration of the test.  
18 Remove brake pedal jack (010) and adapter    
19 Connect pressure tester (3) to brake caliper (2) and screw bleed screw all the way into brake caliper (2)    
20 Bleed brake system Model 217, 222, 231 AR42.10-P-0010-02RK 
    Model 172 AR42.10-P-0010-02EW
    Model 204 AR42.10-P-0010-02CW
    TORQUE SPECIFICATION MODEL 217, 222 Bleed screw on brake caliper *BA42.10-P-1002-10V 
    TORQUE SPECIFICATION Model 231 Bleed screw at brake caliper *BA42.10-P-1005-10U 
    TORQUE SPECIFICATION MODEL 172, 204 Bleed screw at brake caliper *BA42.10-P-1003-10J 
    TORQUE SPECIFICATION MODEL 204 with TRANSMISSION 711.6 MODEL 204 with TRANSMISSION 716.6 Bleed screw to central clutch operator *BA25.20-P-1001-01B 
    TORQUE SPECIFICATION Model 172, 204, 217, 222, 231 Bleed screw to brake caliper *BA42.10-P-1002-12J 
21 Disconnect filler/bleeder unit from brake fluid expansion reservoir (1) IMPORTANT Pay attention to manufacturer's operating instructions.  
22 Brake system - inspect fluid level    
REFER TO MAINTENANCE   Model 204 AP42.10-P-4210EW
REFER TO MAINTENANCE   Model 222 AP42.10-P-4210HA
REFER TO MAINTENANCE   Model 172, 231 AP42.10-P-4210V
23 Screw on cap for brake fluid expansion reservoir (1) and tighten    
24 Close engine hood Model 172, 204, 217, 222, 231  
Model 172 AR88.40-P-1000V
Model 204 AR88.40-P-1000EW
25 Activate easy entry/exit feature for the steering wheel Model 172, 204, 222, 231 with code 275 (Memory Package (driver's seat, steering column and mirror))
Model 217		  
    Model 172 with code 275 (Memory Package (driver's seat, steering column and mirror)) AR54.30-P-1000-02W
CLUTCH OPERATING SYSTEM

Number Designation Transmission 711.6 (except 711.640/641) Transmission 716.6 all models (except in model 211)
BA25.20-P-1001-01B Bleed screw to central clutch operator Nm 9 9
FRONT AXLE BRAKE CALIPER

Number Designation MODEL 217.377/378/379/477/479 with CODE B07 MODEL 217.377/378/379/477/479 except CODE B07
BA42.10-P-1002-10V Bleed screw on brake caliper Nm 18 18
FRONT AXLE BRAKE CALIPER

Number Designation Model 217.364/382/384/385/482 MODEL 222.067/082/085/163/165/167/967, MODEL 222.004/032/033/057/104/123/132/133/1 57 with CODE 950/951, MODEL 222.176/182/184/185/976/982/984/985 except CODE Z07
BA42.10-P-1002-10V Bleed screw on brake caliper Nm 18 18
FRONT AXLE BRAKE CALIPER

Number Designation MODEL 222.004/032/033/057/104/123/132/133/15 7 except CODE 950/951, MODEL 222.162/188 MODEL 222.077, MODEL 222.177/178/179 except CODE B07
BA42.10-P-1002-10V Bleed screw on brake caliper Nm 18 18
FRONT AXLE BRAKE CALIPER

Number Designation MODEL 222.176/182/184/185/976/982/984/985 with CODE Z07, MODEL 222.177/178/179 with CODE B07
BA42.10-P-1002-10V Bleed screw on brake caliper Nm 18
REAR AXLE BRAKE CALIPER

Number Designation Model 172 Model 204
BA42.10-P-1002-12J Bleed screw to brake caliper Nm 18 18
REAR AXLE BRAKE CALIPER

Number Designation Model 217 Model 222
BA42.10-P-1002-12J Bleed screw to brake caliper Nm 18 18
REAR AXLE BRAKE CALIPER

Number Designation Model 231
BA42.10-P-1002-12J Bleed screw to brake caliper Nm 18
FRONT AXLE BRAKE CALIPER

Number Designation Model 172 Model 204 (except 204.077/277/377/9)
BA42.10-P-1003-10J Bleed screw at brake caliper Nm 18 18
FRONT AXLE BRAKE CALIPER

Number Designation Model 204.077/277/377 Model 204.9
BA42.10-P-1003-10J Bleed screw at brake caliper Nm 18 18
FRONT AXLE BRAKE CALIPER

Number Designation Model 231.457/473 MODEL 231.474 except CODE B07
BA42.10-P-1005-10U Bleed screw at brake caliper Nm 18 18
FRONT AXLE BRAKE CALIPER

Number Designation MODEL 231.474 with CODE B07 MODEL 231.479 except CODE B07
BA42.10-P-1005-10U Bleed screw at brake caliper Nm 18 18
FRONT AXLE BRAKE CALIPER

Number Designation MODEL 231.479 with CODE B07
BA42.10-P-1005-10U Bleed screw at brake caliper Nm 18
Fig 1: Identifying Pedal Arrester (000 589 48 31 00)
G14790902Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Adapter For Brake Pedal Winch (211 589 00 31 00)
G07472767Courtesy of MERCEDES-BENZ USA
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